Unitech MS910 Barcode Scanner Replacement Battery 3.7V 380mAh

Unitech MS910 Series — 3.7V Li-Polymer Replacement Battery (1414786)

This 3.7V 380mAh Li-Polymer cell replaces the factory battery in the Unitech MS910 compact barcode scanner. It fits the MS910, MS910-CUBB00-SG, MS910-CUBB00-TG, and MS912, among other variants in the series. OEM part numbers 1414786, 1615058, and 682030R all cross to this pack.

• MS910 series compatibility: These models share the same 3.7V power rail, physical footprint (32.00 × 20.30 × 7.00mm), and BMS handshake protocol — the replacement cell slots in and the scanner's charge controller recognises it without reconfiguration.
• Bench tested on actual hardware: We cycled this pack through repeated scan-trigger events and wireless polling intervals. The BMS held cutoff voltage cleanly at the low-end threshold and accepted charge from a standard MS910 cradle without fault codes.
• First-shift preparation: After installing this pack, seat the scanner in its cradle and run a full charge cycle before your first pick-and-pack shift. Scan-trigger inrush is highest when the cell is near minimum voltage — a fully charged cell prevents false BMS trips on the first burst of the day.

Cradle showing a charging error on a new pack

A charging error on a new Li-Polymer pack almost always comes down to contact resistance at the dock, not a fault in the cell itself. Debris or oxidation on the cradle's gold contacts raises resistance enough that the dock's charge controller sees an out-of-range voltage and flags an error. Wipe the contacts on both the pack and the cradle with a dry cloth, reseat the scanner firmly, and check that the indicator light cycles to solid amber within 30 seconds. If the error persists, measure contact voltage at the cradle pins — you should read between 4.1V and 4.2V with no load.

Scanner loses wireless connection during a rapid scan burst

During a fast scan burst, the imager and the wireless radio draw current simultaneously — in the MS910's compact housing there is very little headroom between peak draw and the BMS trip threshold. A degraded or deeply discharged cell cannot sustain both loads at once, so the radio drops first while the scanner still appears powered. Installing a fresh, fully charged pack resolves this in most cases because resting cell voltage stays above 3.6V through the combined inrush spike. If dropouts continue after a full charge, check that the wireless polling interval in your host software is not set below 100ms — tighter polling increases sustained current draw and compounds the problem.