What Battery For
Your answer

What battery does a laser level or stud finder take?

The laser levels and stud finders listed here run on AA, AAA or 9V batteries, and a few take a rechargeable tool battery instead.

Who made it?

Which model?

The battery it takes

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Batteries by model

Laser level, wall scanner and stud finder batteries by model
MakerModelKindBattery
BoschGLL25-10Cross-line laser2 AAA
BoschGLL50-20Cross-line laser2 AA or Bosch 3.7V pack
BoschGLL 3-50, GLL50-40GLine laser4 AA
BoschGMS 120Wall scannerOne 9V
BoschGMS120-27Wall scanner2 AA or Bosch 3.7V pack
DEWALTDW088K, DW088CGCross line laser3 AA
DEWALTDCLE34021B, DCLE34031BGreen line laser20V MAX pack (DEWALT’s)
ZirconSuperScan M4, SuperScan K4Stud finderOne 9V alkaline
ZirconStudSensor Center, SuperScan IDStud finder2 AA
ZirconMultiScanner x85Stud finder3 AAA
ZirconStudScoutMagnetic stud finderNo battery

From each maker’s product pages. Other models may take a different battery.

Check the model number

One maker’s lasers and scanners take different batteries, so look for the model number on the tool’s label before you pick a battery.

Franklin Sensors, Craftsman and other brands

For other brands, the manual names the battery the tool takes.

Common questions

How big is a 9V battery?

Energizer's datasheet gives its 9V alkaline as 26.5 x 17.5 x 48.5 mm, width by depth by height.

Keep going

Batteries for outdoor gear and tools9 volt battery typesBattery size chart

Where we get our information from

From Bosch, DEWALT and Zircon product pages and Energizer’s 9V datasheet, read on October 25, 2026. Checked against published data from Energizer, Bosch, DEWALT and Zircon.

See all 4 sources
  • Energizer, 522 9V alkaline product datasheet (PDF)
  • Bosch product pages (US): GLL25-10, GLL50-20, GLL 3-50 and GLL50-40G lasers, GMS 120 and GMS120-27 wall scanners
  • DEWALT product pages: DW088K, DW088CG, DCLE34021B and DCLE34031B lasers
  • Zircon product pages: SuperScan M4 and K4, StudSensor Center, SuperScan ID, MultiScanner x85 and StudScout

Battery sizes come from battery makers' datasheets and device makers' own manuals and help pages. Check your device's manual or the old battery before you buy. If anyone may have swallowed a battery, call the National Battery Ingestion Hotline at 1-800-498-8666 or your poison center at 1-800-222-1222 straight away.