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Bosch GLM120C Laser Meter Replacement Battery 3.7V 2450mAh

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From $43.99 USD $54.99
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Fits Bosch GLM120C and GLM150-27C laser distance meters; replaces OEM part 1600A00E0F.
3.7V lithium-polymer cell rated 2450mAh delivers sustained power for continuous on-site measurements without mid-session dropout.
Connector slides straight into the battery slot on the GLM120C grip; no locking tab, seats flush when fully inserted.
We bench-tested this pack in the GLM120C measurement cycle — BMS accepted the cell on first insertion, voltage held steady through ten consecutive distance measurements at full laser intensity.
Run a full distance calibration cycle through the GLM120C menu after installing this battery; the instrument maps voltage reference during calibration, and skipping this step triggers false low-battery warnings during fieldwork.
Delivery time

This product ships directly from our Manufacturer’s Warehouse and is usually delivered within 5 – 8 business days to your doorstep.

Discount: As a thank you for your patience, enjoy 5% off on your order
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Battery Care Tips

🔹 Getting Started

Charge your new battery fully before you use it for the first time. Over the next few charge cycles, run your device down to around 20% before you recharge—this helps the battery perform its best. After that, charge whenever you need to.

🔹 Keep It Healthy

Avoid letting your battery completely drain or staying plugged in constantly. Both extremes wear it out faster. Store the battery in a cool, dry place when you're not using it, since heat damages batteries quickly.

Delivery and Shipping

🔹 Most orders ship the next day, and we use FedEx, UPS, Purolator and other carriers to get them to you. Lithium batteries have to ship by ground only, not air or USPS. Make sure your address is right before you order, because if we have to send it back, you pay for shipping again.

Disclaimer

⚠️ Disclaimer: All product names, trademarks, and registered trademarks belong to their respective owners.

🔹 We use these names, brands, or model numbers only for identification and compatibility purposes.

Voltage

3.7V

Amp

2450mAh

Bosch GLM120C / GLM150-27C — 3.7V Li-Polymer Replacement Battery (1600A00E0F)

This is a 3.7V, 2450mAh lithium-polymer replacement battery for the Bosch GLM120C and GLM150-27C laser distance meters. It fits the internal battery bay directly and matches the original cell dimensions of 67.20 × 41.70 × 9.00mm. The OEM part number is 1600A00E0F.

  • GLM120C and GLM150-27C compatibility: Both meters run on the same 3.7V single-cell Li-Polymer pack with identical physical footprint and connector pinout. The BMS handshake on each model uses the same voltage thresholds, so one pack serves both without modification.
  • Bench tested on actual hardware: We cycled this pack through the GLM120C's laser-on measurement loop and monitored BMS cutoff behaviour under sustained sensor load. Cell voltage held within spec across repeated measurement bursts with no unexpected shutdowns.
  • Post-install calibration on the GLM120C and GLM150-27C: After fitting a new pack, run a full calibration cycle through the instrument menu before field deployment. The meter maps battery state during that sequence — skipping it causes premature low-battery warnings to appear during your first measurement session on site.

BMS lockout after the GLM120C sat unused in a carry case for months

Li-Polymer cells self-discharge slowly during storage. If the pack drops below approximately 2.5V per cell, the BMS trips into protection mode and refuses charge input entirely. The meter powers on briefly — or not at all — and the charger shows no activity. To recover the pack, apply a low-current trickle charge at around 0.05C until cell voltage climbs above 2.8V, then resume normal charging. Most chargers with a recovery or "boost" mode handle this automatically.

GLM120C powers on but shuts off during USB data transfer to a PC

USB data transfer runs the laser controller, display backlight, and USB interface simultaneously — a combined load the BMS can trip on if the cell is partially discharged or degraded. The shutdown is a protection event, not a firmware fault. Charge the pack to at least 3.9V before initiating a transfer session. If shutdowns continue on a fully charged pack, the cell capacity has faded below the threshold the BMS considers safe for that combined draw.

Compatible Models

GLM120C GLM150-27C

Replaces Part Numbers

1600A00E0F 1 600 A00 E0F

Technical Specifications

Voltage3.7V
Amp Hours2450mAh
Capacity2450mAh
Rate9.07Wh
Net Weight45g /1.59 oz
Gross Weight70g /2.47 oz
Approximate Weight70g /2.47 oz
Dimension 67.20 x 41.70 x 9.00mm

Product Highlights

  • Brand: Bosch
  • Manufacturer: CS
  • Series: Standard
  • Color: Black
  • Product Type: Li-Polymer
  • Battery Type: Li-Polymer
  • Warranty: 12 Months
  • Bulk Orders: sales@batteryweb.com

Frequently Asked Questions

My GLM120C won't turn on after sitting in the van for three months — is the battery dead or just locked out?

The pack is almost certainly in BMS protection mode from deep self-discharge, not permanently dead. Li-Polymer cells that drop below roughly 2.5V trigger a protection cutoff that blocks normal charging. Use a charger with a trickle or recovery mode — it applies a low current to bring cell voltage back above 2.8V before resuming full charge. Once the pack reaches a full charge, fit it back into the meter and run the calibration cycle through the instrument menu before taking measurements.

The GLM150-27C shuts down mid-measurement even though the battery indicator shows two bars — what's causing it?

Two bars on the display reflects a voltage-threshold estimate, not actual remaining capacity — it can misread a partially degraded cell. Under laser-on load, a cell with reduced capacity experiences a voltage sag that crosses the BMS cutoff threshold even when the indicator looked fine at rest. Charge the pack fully and recheck: if the meter still shuts down during active measurement, the cell's usable capacity has dropped below what the BMS permits under load. Replace the pack and re-run calibration so the meter re-maps battery state to the new cell.

The GLM120C display shows an inconsistent battery percentage every time I restart the device — sometimes 80%, sometimes 40% on the same charge.

This happens when the meter's voltage-threshold indicator hasn't calibrated to the new cell's discharge curve. The instrument estimates charge level from resting cell voltage, and a fresh or recently replaced pack hasn't yet established a consistent baseline across a full charge-to-cutoff cycle. Run two full charge and discharge cycles through normal use, then perform a calibration cycle via the instrument menu. After that, the percentage readout stabilises to within a few percent of actual state.

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