What battery does it take?

• Fluke lists a 9 volt alkaline battery (IEC 6LR61) for the 115 and 117, and the 87V comes with a 9V battery installed.
• Battery life: about 400 hours typical without the backlight, Fluke says

• Klein Tools lists 2 x AAA batteries for its MM325, MM400, MM420, MM450 and MM720 multimeters.

• Amprobe’s 30XR-A and 37XR-A take a 9 V battery, NEDA 1604 or IEC 6F22.

• The PM55A compact multimeter runs on one 3 V CR2032 button battery, Amprobe says.

• Zircon’s SuperScan M4 and K4 stud finders need a 9V alkaline battery, not included.

• Zircon’s StudSensor Center runs on two AA batteries, and the SuperScan ID requires two AAs, not included.

• The MultiScanner x85 needs three AAA (LR03) batteries, not included, Zircon says.

• Zircon’s StudScout is a magnetic stud finder that needs no batteries.

• DEWALT’s DW088K red and DW088CG green cross line lasers each take 3 AA batteries, which come in the box (alkaline with the DW088K).

• The DCLE34021B and DCLE34031B green lasers run on DEWALT 20V MAX batteries, sold separately, as these are tool-only kits.
• DCLE34021B: packs up to 5.0 Ah, non-POWERSTACK, DEWALT says

• Bosch packs two AAA batteries with the GLL25-10 cross-line laser.

• Bosch’s GLL50-20 works with two AA batteries, which come with it, or Bosch’s 3.7V Lithium-Ion 1.0 Ah battery, sold separately.

• The GLL 3-50 and GLL50-40G line lasers each come with four AA batteries, Bosch says.

• Bosch rates the GMS 120 wall scanner at 9V and includes one 9V battery.

• The GMS120-27 runs on the two AA batteries it comes with or a Bosch 3.7V Li-ion battery sold separately.

• Mitutoyo ships its 500-196-30 Digital ABS AOS Caliper with an SR44 battery, rated for about 5 years of normal use.

• Neiko’s 01417A 6-inch and 01409A 12-inch digital calipers come with two LR44 batteries, one of them a spare.

• Starrett lists one CR2032 lithium battery, included, for its 798B IP67 electronic caliper.
• Battery life: over one year of normal use, Starrett says

• Petzl’s ACTIK, ACTIK CORE and TIKKA CORE take three AAA/LR03 batteries or the CORE rechargeable battery.
• AAA types: alkaline, lithium or Ni-MH rechargeable, Petzl says
• In the box: three AAAs with the ACTIK; the CORE battery with the ACTIK CORE and TIKKA CORE

• Fenix ships the HM62-T headlamp with its ARB-L18-3400U V2.0 rechargeable 18650 battery and says it also works with two CR123A batteries.
• Other Li-ion batteries: not recommended by Fenix

• The HM65R V2.0 comes with a Fenix ARB-L18-3400 rechargeable 18650 battery, and Fenix recommends that battery or another from its ARB-L18 series.
• CR123A or 16340: fewer brightness levels and shorter runtime; never charge or mix them, Fenix says

• Fenix’s TK21R flashlight comes with its ARB-L21-6000 rechargeable battery.
• Not to use: an 18650, CR123A or 16340 battery, Fenix says

• The PD36R PRO runs on one 21700 rechargeable Li-ion battery, the ARB-L21-5000 that comes with it.

• Streamlight’s Stylus Pro penlight takes two AAA alkaline batteries, which come with it.

• Streamlight’s ProTac 2L-X and ProTac HL USB run on the SL-B26 Li-Ion USB rechargeable pack or two CR123A lithium batteries.

• The PolyTac 1X uses one SL-B9 rechargeable pack, one CR123A lithium battery, or one AA alkaline or lithium battery, Streamlight says.

• Black Diamond’s Spot 400, Storm 450 and Astro 300 run on three AAA batteries or the rechargeable BD 1500 Li-ion battery.
• BD 1500: sold separately

• The Astro 300-R has an integrated 1500 mAh Li-ion battery that charges through a micro-USB port.

• Nikon’s spec tables give one CR2 lithium battery for the COOLSHOT 50i GII, COOLSHOT PROIII STABILIZED, COOLSHOT LITE STABILIZED, COOLSHOT 20i GIII and PROSTAFF 1000.

• Leupold lists a CR2 battery for the RX-1400i TBR/W Gen 2.

• The RX-5000 TBR/W takes a CR123 battery, Leupold’s spec list says.

• Vortex packs a CR2 with the Diamondback HD 2000 and Razor HD 4000 hunting rangefinders and lists one for the Blade golf rangefinder.

• Vortex lists a CR123 battery for the Anarch+ image stabilized golf rangefinder.

• Bushnell’s R5 2000 hunting rangefinder and its Tour V7 Shift and Pro X3+LINK golf rangefinders run on a 3-volt CR2 lithium battery.
• In the box: one CR2 with the Tour V7 Shift and Pro X3+LINK; batteries included with the R5 2000

• The A1-Slope golf rangefinder has an integrated rechargeable battery, charged through the included USB-C cable, and Bushnell rates a full charge at 50+ rounds.

• Aimpoint lists a CR2032 for both the Acro P-2 and the Duty RDS MR.
• Acro P-2: 5 years of continuous use on setting 6 of 10, Aimpoint says

• Trijicon’s RMR Type 2, RMRcc, RCR and MRO each run on one CR2032.
• Battery life: RMR Type 2 up to 2 years of typical use, RMRcc over 4 years and RCR over 6 years continuous, MRO 2.5 years continuous, each at the setting Trijicon names

• SIG SAUER’s ROMEO-X Compact comes with one CR1632 in a side-loading compartment, rated for 20,000 hours.

• The ROMEO-M17 has a side-mounted CR2032 compartment with a threaded cap and runs at least 50,000 hours at medium brightness, SIG SAUER says.

• Vortex lists a CR2032 for the Crossfire II Solar Red Dot, the Venom Enclosed Micro Green Dot and the Defender-ST Micro Red Dot.
• Run time: 50,000 hours on the Crossfire II Solar (150,000 with solar), 20,000 on the Venom Enclosed, 25,000 on the Defender-ST

• The AMG UH-1 Gen II holographic sight takes a CR123A, with a run time of 1,500 hours, Vortex says.

• Holosun’s HS507C-X3, HS407C-X3 and HS507COMP each take a CR1632 coin battery in a side-loading tray.
• Changing it: the side tray comes out without taking the optic off the gun

• Holosun lists a side-loading CR1620 for the EPS-CORE-RD-MRS, with up to 50,000 hours of runtime.

• Holosun’s HS510C, HS515CM and AEMS-CORE-X2-RD take a CR2032 in a side tray.

• Holosun builds the SCRS-RD-MRS around an internal rechargeable battery and a solar panel, with no battery to replace.

• Browning lists 8 AA batteries for the Dark Ops Pro X 1080 and recommends standard alkaline or lithium AAs, Browning or Energizer brand.
• External power: a 12-volt jack

• Bushnell’s Core DS-4K and S-4K manual calls for 6 AA batteries, lithium or alkaline, and recommends Energizer Lithium AA.
• DC In jack: for Bushnell’s solar panel 119986C; the manual says other external power supplies should not be used

• Moultrie says the Edge 4 Pro takes 8 to 16 AA alkaline or lithium batteries, with all 8 on the same side of the tray.
• Brands: Moultrie Alkaline, Energizer Alkaline or Energizer Lithium
• Instead of AAs: a Moultrie Rechargeable Battery Pack

With an external power source, Moultrie recommends keeping batteries inside as a backup.

• Tactacam says REVEAL cameras need 12 fresh AA lithium batteries, which don’t come in the box.
• REVEAL X 4.0 and Pro 4.0: ship with a AA battery tray, not a rechargeable Flexpack
• External power: REVEAL Flexpacks work with most 12-volt sources (plug size 4.0 x 1.77)
• Low battery: a blinking red power light; replace all 12

With a solar panel, Tactacam says to keep AA or LiPo batteries in the camera as a backup.

• Timex’s manuals page lists the battery by model number, and its W33 guide says the battery type is on the caseback.
• 2-hand and 3-hand quartz analog: SR626SW (models 060, 253, 00V, 203 and others)
• 3-hand with date or day/date: CR2016 (models 902, 905, 91B, 903, 916)
• Full-size 3-hand with date or day/date: SR920SW (models 207, 03B)
• Men’s 3-hand day/date: SR927SW (model 00G)
• Men’s quartz analog date: SR621SW (models 07C, 10J)
• Men’s full-size quartz analog: CR2012 (model 05Y)
• By model number: the battery Timex lists for each model

Timex strongly recommends that a retailer or jeweler replace the battery.

• Citizen’s battery list matches each model and caliber to its cell, and most of its rows are rechargeable cells such as the MT621S.
• Caliber number: engraved on the caseback, such as E870 or C050
• Calibers with a battery to replace: SR621SW in the 6329, SR927W in the 0510, SR616SW in the 9627

• Seiko recommends an authorized Seiko dealer for a new battery, asked to fit only a genuine Seiko one.
• Low battery: the second hand moves in 2-second steps, on calibres with this signal
• First battery: fitted at the factory to test the watch, so it may run out sooner
• By caliber: the battery Seiko names for each caliber

• Swatch says it replaces the battery at no cost in its own Swatch stores.
• The battery number: on the old battery, or on the back of the case
• Spare batteries and covers: sold at Swatch stores
• By line: the cell on Swatch’s list for each line

• Masimo says the MightySat Rx needs two AAA alkaline batteries, and that other kinds may throw off its battery status indicator.
• Opening: lay it display down and push lightly on the battery button on the front of the sensor pad

• Einstein Associates’ user manual for the Zacurate 500DL gives two 1.5 V AAA batteries, and two come in the box.
• Fitting: match the + and - signs in the compartment, then slide the cover back until it snaps in place

• Innovo Medical’s user manual for the iP900AP gives two 1.5 V AAA batteries, and lists two in the box.
• Fitting: by the polarity marks in the compartment, then put the cover back on

• Beijing Choice Electronic Technology’s manual for the MD300C22 gives two AAA alkaline batteries, and two come with it.
• Fitting: by the polarity marks, then push the cover along the arrow

• Nonin says the Onyx Vantage 9590 runs on two AAA batteries and comes with two in the box.

• Nonin rates the Onyx II 9550 on two AAA-size alkaline batteries.

• Nonin’s own store lists two AAA batteries for the TruO2 3250, included with it.

• Braun says the ExactFit 3 BUA6150 takes 4 AA LR6 alkaline batteries, in the compartment on the bottom.

• Withings’ BPM Connect has a rechargeable battery that charges over micro-USB and lasts up to 6 months.

• iHealth lists four 1.5 V AAA batteries as the Track KN-550BT’s power source, and puts them in the box.
• Battery life: about 300 measurements, iHealth says

• Omron says the BP7465 and BP5465 run on four AA batteries or their AC adapter, and both come in the box.

• The BP7150, BP7255 and BP5150 run on four AA batteries, and Omron lists all three for its HEM-ADPTW5 AC adapter, sold separately.
• AA in the box: with the BP7255 and BP5150, not the BP7150

• Omron’s BP7360 and BP5000 upper arm monitors run on four AA batteries.
• Batteries in the box: with the BP7360, not the BP5000
• AC adapter: neither is on Omron’s HEM-ADPTW5 list

• Omron says the BP5360 and BP5255 run on four AA batteries, included, or an AC adapter that isn’t in the box.
• Which adapter: Omron’s page doesn’t name it; check the manual

• The Complete BP7900, Omron’s monitor with EKG, runs on 4 AA batteries, included.

• Omron’s Evolv BP7000 runs on 4 AAA batteries, included.

• Omron’s BP6100, BP6350 and BP4350 wrist monitors run on 2 AAA batteries, included in the box.

• Exergen’s TAT-2000 series manual gives one 9-volt battery, good for about 7,500 readings.
• Which way: the positive (small) terminal on the right

• Vicks gives a 3V CR1632 for V966 and V912 thermometers with the new power button, and a CR1225 for earlier ones.
• CR1632: V966USV2, V966USV3, V912USV2, V912USV3, V912BBUSV2, V912BBUSV3
• CR1225: V966US, V966USV1, V912US, V912USV1

• Vicks says the VNT200 and VNT275 no-touch thermometers take 2 AAA batteries.

• Braun says its ThermoScan 7 and 7+ take 2 AA batteries, and that the ThermoScan 5 and 6 come with two AA.
• Opening a ThermoScan 7: thumb in the slot at the bottom of the cover, then lift it

• Braun’s No Touch BNT100, 3-in-1 No Touch BNT400, Forehead BFH175 and TempleSwipe BST200 each take 2 AAA batteries.

• Braun’s No Touch + Forehead thermometer, the NTF3000, comes with 2 AA batteries.

• Braun gives a 3V CR1632 for the PRT2100 digital stick thermometer.
• Opening: a coin in the slot, turned to the unlock symbol

• Abbott’s FreeStyle Libre 2 reader runs on one lithium-ion rechargeable battery that you charge rather than replace.
• Full charge: at least 3 hours
• Lasts: up to 4 days of typical use

• Dexcom says the G7 receiver’s battery can last up to 7 days on a single charge.

• Ascensia’s Contour Next One takes two 3-volt CR2032 or DL2032 coin cells, fitted with the + sign facing down.
• Battery life: about 1,000 tests, or a year at 3 tests a day

• The Contour Next Gen, Next EZ and Plus Blue user guides each name two 3-volt CR2032 or DL2032 coin cells.
• Next EZ: + side up, under the prongs

• Accu-Chek’s Guide, Guide Me, Aviva Connect and Nano meters each use two 3-volt CR2032 lithium coin cells.
• Guide and Guide Me: + side up, under the black tabs
• Aviva Connect and Nano: + side down, in the battery drawer

• The Accu-Chek Aviva meter uses one 3-volt CR2032 lithium coin cell.
• Which way: the + facing outwards

• Accu-Chek’s Compact Plus uses two standard AAA batteries, preferably alkaline.
• Rechargeable AAA: allowed, though they normally give slightly lower power

• OneTouch says the Verio Flex uses one CR2032 lithium coin cell and no rechargeable battery.
• Which way up: plus (+) side up, on top of the battery ribbon

• The Verio Reflect uses 2 CR2032 lithium batteries, one for the meter and one for the backlight, OneTouch says.
• Both at once: OneTouch says to always change the two together
• Which way up: the + side facing you, inside the fold of each ribbon

• OneTouch’s Ultra 2 takes two 3.0 volt CR2032 batteries, the meter’s on the white ribbon and the backlight’s on the black one.
• Battery icon: at least 100 more tests left when it first shows
• Backlight battery: change it when the backlight no longer comes on

• A yellow tab marks size 10, a 1.45 volt zinc-air cell 5.65 to 5.80 mm across.

• A brown tab marks size 312, a 1.45 volt zinc-air cell 7.70 to 7.90 mm across.

• A orange tab marks size 13, a 1.45 volt zinc-air cell 7.70 to 7.90 mm across.

• A blue tab marks size 675, a 1.45 volt zinc-air cell 11.3 to 11.6 mm across.

• Genie’s G3T, G3BT-R and G1T-BX remotes use a CR2032, and the GITR-3BX takes a 12V A23.
• Older remote: read the code on the old battery

• Genie’s Intellicode keypads GWKP, GWKIC and GWK each use one 9-volt battery.

• Chamberlain’s KLIK5U universal Clicker remote comes with a 3V CR2032 coin cell.
• Older remote: read the code on the old battery

• Chamberlain’s KLIK2U Clicker universal wireless keypad comes with a 9V battery.

• LiftMaster lists one CR2032 for its L991S, L993M, L993S and L992U remotes and the L932M keychain remote.
• Older remote: read the code on the old battery

• LiftMaster’s L979M and L979U wireless keypads each take one 9 volt battery.

• Toyota’s manuals name three sizes, by model and by whether the car has a smart key system.
• 2024 Camry and RAV4: CR2032
• 2024 Corolla: CR2032 without a smart key, CR2450 with one
• 2024 Tundra: CR2450
• 2023 Tacoma, 2019 Corolla, 2017 Camry: CR2016 without a smart key, CR2032 with one

• Honda Canada’s manuals give a CR2032 for the remote in the 2020 Odyssey, 2021 Ridgeline, 2022 and 2025 Civic, 2023 CR-V and Pilot and 2024 HR-V.
• 2016 CR-V and 2018 Civic: CR2032 in the smart entry remote, CR1620 in the master key with remote

• Ford’s 2025 F-150 manual gives a CR2450 for the remote in vehicles with push button start, and a CR2032 for the flip key and the Police Responder remote.
• Escape (New Zealand edition) and Explorer (electric, UK edition): CR2032

• Nissan’s 2023 Altima and Rogue manuals recommend a CR2032 or equivalent.

Nissan’s parts site gives a CR2032 for most models, and says to check your owner’s manual for yours.

• In Hyundai’s 2025 Tucson manual, the remote key takes a CR2032 and the smart key a CR2450.

• Kia’s 2026 Carnival owner’s manual (KA4) gives a CR2450 for the smart key, and Kia India’s EV6 manual gives a CR2032.

The size differs between Kia models, so check your own manual or the old battery.

• Subaru’s manuals give the size by model and by kind of key.
• Legacy and Outback, 2023 manual: CR2032 in the access key fob, CR2025 in the transmitter
• Forester (2021 manual), Legacy and Outback (2017 and 2021 manuals): CR2032 in the access key fob, CR1620 in the transmitter
• BRZ, 2017 manual: CR2016 without keyless access with push button start, CR2032 with it

• Mazda’s 2023 CX-5 manual says to replace it only with the same type, a CR2032 or equivalent.
• 2020 MX-5: CR2025 in a type A key, CR2032 in a type B

• Chevrolet’s 2022 Malibu and 2026 Trax manuals both say to replace it with a CR2032 or equivalent.

• GMC’s 2022 Acadia and Terrain and 2021 Sierra 1500 manuals call for a CR2032 or equivalent battery.
• Which way up: positive side toward the back cover (Acadia, Terrain), facing up in one Sierra 1500 key

• Buick’s 2021 Enclave manual says to replace the key battery with a CR2032 or equivalent.
• Which way up: positive side toward the back cover

• Cadillac’s 2022 XT5 and 2021 Escalade manuals name a CR2032 or equivalent battery, and its 2022 CT5 manual a CR2450.
• Which way up: positive side facing down in the XT5, toward the back cover in the Escalade

• Jeep’s 2023 Cherokee and 2026 Compass manuals call for one CR2032 battery, and its 2021 Wrangler manual for a CR2450.

• Ram’s 2022 2500 and 3500 manual names one CR2032 as the replacement.

Ram recommends a battery from Mopar, as an aftermarket coin battery may not match the original’s dimensions.

• Dodge’s 2025 Durango manual recommends one CR2032 battery for the key fob.

• Chrysler’s 2026 Pacifica manual gives one CR2032 as the recommended replacement.

• Mercedes-Benz’s C-Class Saloon manual (UK edition) calls for a CR 2032 lithium cell battery (3 V) in the key.

For another model, check the code on the old battery.

• Tesla’s Model 3 and Model Y manuals for North America give a CR2032, + side up, for the accessory key fob.

• Apple says AirTag takes one CR2032 lithium 3V coin battery, fitted with the positive side up.
• Bitter-coated cells: look for “Compatible with Apple AirTag” on the pack

• Weber says its Genesis II, Genesis II LX, Spirit and Spirit II models with front control knobs need an AA battery in the igniter module, and a Genesis with front knobs has its AA behind the igniter button.

• Weber says these side-knob Genesis and Spirit grills take a AAA battery, found under the igniter button on the right side table.

• Weber says the Q 120, 220, 320, 1200, 2200 and 3200 take a AAA battery behind the igniter button.

• On the Performer Platinum and Deluxe, Weber says the AAA battery sits behind the igniter button, under the control panel cover.

• Traeger says a 9V battery in the Flatrock 3-Zone runs the igniter only, not the flame sensor, fuel sensor or control lights.

• SimpliSafe says the Entry Sensor takes a single CR-2032 lithium 3V battery, lasting up to 5 years.
• To reach it: slide the sensor up and off its bracket

• SimpliSafe says both generations of its Motion Sensor take one CR-123A lithium 3V battery.
• Life expectancy: up to 4 years for Gen 2, up to 5 for Gen 1

• Ring says the Contact Sensor (2nd Gen) uses two CR2032 coin batteries, which may last up to 3 years.
• Cold weather: drains the batteries faster, Ring says

• Ring says the 1st Gen Contact Sensor uses a CR123A battery.

• Ring says its Outdoor Contact Sensor uses two AA batteries.

• Ring says to slide the 2nd Gen Motion Detector off its wall-mounted back cover to swap its two AA batteries.

• Ring says the 1st Gen Motion Detector uses one CR123A 3V battery.

• ADT says the Command door and window sensor needs one 3V CR123A battery.
• Low battery: a message on the touchscreen or touchpad, and in the Control app

• TI lists 4 AAA alkaline batteries for the TI-84 Plus and Silver Edition, plus an SR44SW or 303 silver oxide backup cell.

• TI says to use only the TI Rechargeable Battery in the TI-84 Plus CE, and it charges without coming out.
• Replacing it: a small screwdriver releases the back panel

• TI’s table gives the TI-83 Plus 4 AAA alkaline batteries and an SR44SW or 303 silver oxide backup, like the TI-84 Plus.

• TI’s table gives the TI-83 Plus Silver Edition 4 AAA alkaline batteries and a CR1616 or CR1620 lithium backup.

• In TI’s battery table, the TI-89 Titanium runs on 4 AAA alkaline cells with an SR44SW or 303 silver oxide cell as backup.

• TI lists 4 AAA alkaline batteries for the TI-Nspire and TI-Nspire CAS, with no backup cell.

• Logitech lists 1 AA battery, included, for both the M185 and the M720 Triathlon.
• Battery life, Logitech says: 12 months for the M185, 24 months for the M720

• Logitech says the Pebble Keys 2 K380s runs on 2 pre-installed AAA alkaline batteries, and its K380 spec sheet lists 2 AAA.
• K380 battery life: 24 months, the spec sheet says

• Logitech lists a rechargeable lithium-polymer battery: 500 mAh in the MX Master 3S and 1500 mAh in the MX Keys S, which charges by USB-C.

• Microsoft says to flip the Bluetooth Mouse over and press the small tab to open the battery door for its 1 AA battery.

• Microsoft says the Surface Mouse, 2nd Edition uses two AAA alkaline batteries that last up to 6 months.

• Apple says these have a built-in battery that charges through a USB-C or Lightning port, depending on the model.
• Magic Mouse: its charging port is underneath

• Etekcity lists 4 x 1.5V AAA batteries for the EB4410B Digital Body Weight Scale.

• The ESB4074C Smart Body Weight Scale takes 2 x 1.5V AAA batteries, Etekcity lists.

• Etekcity lists a 1000mAh lithium-ion battery in the ESF93, charged in 3 hours, and a 500mAh one in the HR Smart Fitness Scale, charged by USB-C.

• Taylor includes one CR2032 lithium coin battery with both the 7358 bathroom scale and the Slim Digital Kitchen Scale 3912BK.

• Taylor includes three AAA batteries with its Pure White Digital Bathroom Scale.

• Ozeri says the ZK24 requires 3 AAA batteries, in a compartment you open without a screwdriver.

• Ozeri ships the Pro II Digital Kitchen Scale with 2 AAA batteries included.

• Withings says the Body+ runs about 18 months on four standard AAA batteries.

• Withings says to charge the Body Cardio with the USB cable that came with it, which can take up to 5 hours.
• Between charges: about 1 year

• EatSmart includes 4 AAA batteries with the ESBS-01 Precision Digital Bathroom Scale.

• EatSmart’s Precision 440 runs on 3 AAA batteries, included, and turns itself off to save them.

• Tile says every Tile Pro from 2018 to 2024 takes a CR2032, fitted with the positive side showing.
• Brands Tile recommends: Panasonic, Maxell or EVE

• Tile lists a CR1632 for the 2018 and 2020 Tile Mate, the only Mates with a battery door.

• Tile says a Tile with a non-replaceable battery has no battery door, and its built-in battery lasts up to 3 years.
• Sticker (2020): a 2-year battery

• Schlage says the Encode and Connect deadbolts need four new AA alkaline batteries, fitted on the inside part of the lock.
• Encode: a flashing red battery icon means low; solid red means replace them now
• Connect: unsnap the short battery wire, then lift out the tray
• Encode battery life: up to six months with typical use

• Kwikset says the Halo is powered by 4 AA batteries, and the SmartCode and Signature Series take 4 AA in a battery pack inside.
• Kwikset’s advice: alkaline from a major brand

• Yale says to loosen the screw on the inside battery cover with a Phillips screwdriver, then swap in 4 new AA batteries.
• Battery life: up to one year

• Google says the Nest × Yale Lock uses four standard AA alkaline batteries.

• August says the Wi-Fi Smart Lock needs two 3V CR123 or CR123A lithium batteries, and recommends Panasonic.
• Battery life: up to 3 months with Wi-Fi on

• August says all its smart locks except the Wi-Fi Smart Lock take 4 AA alkaline batteries, all 4 replaced at one time.

• Level lists 1 CR2 lithium non-rechargeable battery for the Level Lock, lasting up to 1 year, and packs a CR2 lithium battery with the Level Bolt.

• Blink lists the power as “Two, size AA 1.5-volt lithium non-rechargeable batteries.”
• Battery life: up to two years with default settings

• For the 2nd Gen, Blink lists “Three Energizer size AA 1.5-volt lithium non-rechargeable batteries.”

• Ring’s Quick Release Battery Pack is a 6040 mAh rechargeable lithium-ion pack that charges by micro-USB or the Ring Charging Station.
• Fits: Video Doorbell 2, 3, 3 Plus and 4; Battery Doorbell Plus and Pro; Battery Doorbell 2K Plus and 4K Pro (2nd Gen)
• Ultra pack (10,000 mAh, USB-C): only the Battery Doorbell 2K Plus, Battery Doorbell 4K Pro and Spotlight Cam 2K
• To release it: press the tab

• Google says the Nest Doorbell (battery) has an internal rechargeable battery so it can work without doorbell wiring.

• Google says the wired Nest Doorbell, 1st and 2nd gen, has a small internal battery that helps sound the chime but can’t keep it on by itself.

• Arlo says the doorbell comes with a rechargeable battery, best charged to 100% before you install it.
• Charging: the included USB cable; the battery light turns from red to green when full
• Hardwiring: possible at 8 to 24 VAC

Arlo warns not to leave the doorbell outdoors without the battery in.

• Xbox says its Wireless Controller runs on AA (LR6) batteries or a rechargeable Xbox battery pack.
• Disposable AA: alkaline, marked LR6
• Best performance: rechargeable AA (HR6), Xbox says
• The newest controller: uses the Xbox Rechargeable Battery with a USB-C cable
• Battery life on AA: up to 40 hours, xbox.com says

To open it, hold the controller upside down, press the battery door on the arrow and slide it the way the arrow points.

• Xbox says the Elite Series 2, Core included, has an internal rechargeable battery and needs no AA batteries or Play & Charge Kit.

• Sony’s manual lists a built-in 3.65 V lithium-ion battery, charged with the USB cable to a PS5 that’s on or in rest mode.
• Charging in rest mode: the light bar slowly blinks orange, then turns off when full

• Nintendo says Joy-Con charge while attached to a charging Switch console or a Joy-Con charging grip, in about 3.5 hours.
• After about 500 charges: about 80% of the original capacity

• Nintendo says the Pro Controller charges by USB cable from the Switch dock or straight from an AC adapter, in about 6 hours.
• After about 500 charges: about 70% of the original capacity

• Nintendo says each Joy-Con AA battery pack, left and right, takes two AA alkaline or NiMH batteries.

The included alkaline batteries can fully charge a Joy-Con about one time, Nintendo says.

• Roku says its remotes take AA or AAA batteries depending on the model, and the size is marked inside the battery compartment.
• All at once: same maker, all replaced together
• Direction: on some remotes the two batteries face opposite ways

• Roku says the Voice Remote Pro has a rechargeable lithium-ion battery that charges through a USB-C or micro-USB port.
• 1st edition: 3 hours to charge, lasts about 2 months
• 2nd edition: 5.5 hours to charge, lasts about 3 months

• Apple says the Apple TV 4K remote has a rechargeable battery inside, charged a few times a year with a USB-C or Lightning cable.
• Full charge: about three hours
• Battery level: Remotes and Devices, then Remote, on the Apple TV

• Amazon’s help page says to insert new AAA alkaline batteries in a Fire TV remote.
• The cover: slides off on most models; some have a latch you press at the arrow icon

• Google says to replace both batteries with 2 fresh 1.5 volt AAA batteries if the originals aren’t available.

• Samsung says the SolarCell Remote doesn’t use batteries and charges from indoor light or a USB-C cable.
• Charging by light: set it down with the solar panel facing up
• Which TVs: select 2021 or newer Samsung TVs

• LG’s manual says to replace the Magic Remote’s batteries with 1.5 V AA alkaline batteries, matching the plus and minus ends to the label inside.

• Google says the Nest Thermostat uses 2 standard 1.5 V AAA alkaline batteries that you replace when they get low.
• Google’s advice: high-quality alkaline from a known manufacturer
• Repeated low battery messages: check the C wire connection

• Google says these two have an internal rechargeable battery that isn’t user replaceable, and you charge the thermostat with a USB cable instead.

• Google says to replace the Nest Temperature Sensor’s battery with 1 CR2 3V lithium battery when it gets low.

• Honeywell Home’s manuals for these thermostats say to install two AAA alkaline batteries.
• Lo Batt: flashes on the screen about 60 days before the batteries run out (RTH2300, RTH221)

• Honeywell Home’s T6 Pro Z-Wave guide says to insert 3 AA batteries for primary or backup power.

Without a C wire, the guide says the T6 Pro Z-Wave must run on its batteries.

• Sensi says to take the 2 AA alkaline batteries out of the face plate and put in 2 fresh ones.
• Afterwards: allow 1 to 5 minutes for it to reconnect to Wi-Fi

• Sensi says the Sensi Lite has 2 AAA batteries, replaced with 2 fresh AAA alkaline batteries.

• Sensi says its touchscreen models, the Touch and Touch 2, don’t have batteries.

• Sensi says its room sensors run on 2 AAA batteries.

• The Smart Thermostat Essential runs on a 24VAC supply through its C and R wire terminals, ecobee says.

For a home without a C wire, ecobee offers a Power Extender Kit, sold separately.

• The SmartSensor for rooms and the SmartSensor for doors and windows each take a CR2477 battery, ecobee lists.
• For rooms: up to 5 years
• For doors and windows: up to 3 years

• Kidde’s guide approves three AA batteries for the COB, COBD and COBDL: Energizer E91, Gold Peak 15A or Golden Power GLR6A.
• Not lithium: Kidde says not to use lithium batteries in these alarms
• Low battery: a chirp every 60 seconds
• Fresh batteries: last at least one year, the guide says

• Kidde says the sealed lithium battery in the COB10, COBD10 and COBDL10 needs no installation or replacement for the life of the alarm.
• End of life: 2 chirps every 60 seconds, 10 years after it was first powered up

• Kidde’s COP, COPD and COPDLG plug-in alarms keep two AA backup batteries, from Energizer (E91), Gold Peak (15A) or Golden Power (GLR6A).
• Lithium AA: not to be used, the plug-in guide says
• End of life: 10 years for a CO alarm, 7 for a CO and gas alarm

• Kidde’s COPDL10 plugs into an outlet and has a sealed 10-year backup battery, so there’s no battery to change.

• First Alert’s CO400 manual accepts a Duracell MN1604, Energizer 522 or Ultralife U9VL-J-P as the 9 volt replacement.
• 5 chirps a minute: end of life, about 7 years after installation; replace the alarm
• 3 chirps a minute: a fault; replace the alarm

• First Alert says the CO410 is powered by two replaceable AA batteries, behind a battery door you open without taking the alarm down.

• First Alert’s CO606 plugs into an outlet and keeps one 9 volt battery inside as a backup.
• Low or missing battery: one chirp a minute
• 9V in the manual: Duracell MN1604, Energizer 522, Ultralife U9VL-J-P

• First Alert says the CO710’s battery is sealed and non-replaceable, so after 10 years you install a new alarm.
• End of life: 5 chirps every minute

• X-Sense lists 2 replaceable 1.5 V AA batteries for the XC0C-SR, with a battery life of 3 years.
• On its screen: Lb means low battery, End means replace the alarm

• X-Sense lists one replaceable CR123A for both the XC01-R and the XC0M-SR.
• XC0M-SR: a battery life of 3 years

• X-Sense says the XC0C-SA plugs into a 120 V outlet, with two replaceable AAA batteries as backup in a power outage.

• X-Sense lists a replaceable 3 V CR123A lithium battery for the XS01-WR, with a battery life of 5 years.

• X-Sense builds the SD2J0AX around a sealed 10-year lithium battery, with no battery changes.

• Google says the battery Nest Protect needs 6 Energizer Ultimate Lithium AA (L91) batteries, not alkaline or rechargeable ones.
• All at once: no new batteries in with old ones
• The door: won’t close until all 6 are in
• Low battery: it chirps continuously until they’re replaced

Press the center button twice to test it after the change, Google says.

• The wired Nest Protect takes 3 Energizer Ultimate Lithium AA (L91) as backup batteries, Google says, and not alkaline or rechargeable cells.
• First: turn its power off at the breaker box
• Batteries: all new, never mixed with old

• First Alert’s SMI100 takes one 9V battery, and its SM2-B01 and SC2-B01 alarms take 2 AA batteries.
• 9V in the SMI100 manual: Duracell MN1604 or MX1604, Energizer 522 or 1222
• AA in the SM2 and SC2 manual: Kendal LR6, Energizer E91 or Duracell MN1500
• Rechargeables: not to be used, the SMI100 manual says
• Low battery: a chirp about once a minute, for 7 days

If it gives 3 or 5 chirps every minute or so, the SMI100 manual says to replace the alarm itself.

• First Alert says the SMI110’s 10-year sealed battery isn’t replaceable and needs no changes for the life of the alarm.
• Sealed models: SMI110, SM2-B10 and the smoke and CO SC2-B10
• At the end: after 10 years or the low power warning, push firmly through the breakaway deactivation tab (SM2 and SC2 manual)

• First Alert’s SMI100-AC takes one 9V backup battery, the SM2-W01 and SC2-W01 take 2 AA, and the W10 models have a sealed 10-year backup.
• 9V in the SMI100-AC manual: Duracell MN1604 or MX1604, Energizer 522 or 1222
• AA in the hardwire SM2 and SC2 manual: Kendal LR6, Energizer E91 or Duracell MN1500

• Kidde’s 20SDR smoke alarm takes 2 replaceable AA batteries, and Kidde says to change them every 6 months.
• Low battery: a chirp every 30 to 40 seconds (every 60 on some alarms) for at least 7 days

Kidde says to replace the batteries when the low battery chirp starts, then test the alarm.

• Kidde says the i1040’s sealed lithium battery runs the alarm for 10 years and is never changed.
• 20SD10: beeps 10 years after it’s powered, to remind you to replace it
• End of life: a chirp every 30 seconds on a sealed model

When a sealed Kidde alarm reaches the end of its life, Kidde says to replace the whole alarm.

• Kidde’s hardwired 20SAR takes 2 AA backup batteries, the i12060 one 9V, and the 20SA10 has a sealed 10-year backup.
• 20SAR: change the AA batteries every 6 months or at the low battery chirp
• i12060: a front-loading battery door, so the alarm stays on its bracket