Motorola RS507 Barcode Scanner Replacement Battery 3.7V 1900mAh

Motorola RS507 / RS507X Series — 3.7V Li-ion Replacement Battery (BTRY-RS50EAB02-01)

This 3.7V 1900mAh Li-ion battery fits the Motorola RS507, RS507X, and RS50EA ring-style barcode scanners. These are hands-free scanning units used in warehouse pick-and-pack, retail stockrooms, and distribution centres. Voltage and capacity match the OEM spec exactly — no firmware flags on tested units.

• RS507, RS507X, and RS50EA compatibility: All three models share the same battery bay form factor, 3.7V rail, and BMS handshake protocol. The pack slides into each unit without modification and the host device recognises charge state correctly on boot.
• Bench tested on actual hardware: We ran this pack through charge and discharge cycles on the RS507 platform. The BMS responded correctly to scan-trigger inrush events and the wireless radio draw simultaneously — no false low-voltage cutoffs were recorded during combined load testing.
• First-shift prep for ring scanners: After installing the pack, seat the scanner in its charging cradle and run a full charge cycle before triggering a pick-and-pack shift. Scan-trigger inrush current peaks sharply when the cell is near minimum — a fully charged cell prevents the BMS from tripping on the first burst of rapid scanning.

Cradle showing charging error after fitting a new RS507 pack

The RS507 charging cradle reads pack charge state through a set of gold-plated contacts on the battery face. If those contacts have oxidation, moulding residue from a new pack, or debris from a warehouse environment, the cradle throws a charging fault rather than starting the charge cycle. This is a contact resistance issue, not a pack fault. Wipe the battery contacts and the cradle contacts with a dry cloth, reseat the pack firmly, and confirm the cradle LED switches to solid amber within 10 seconds — that confirms the handshake is valid.

Scanner dropping wireless connection during rapid barcode scan bursts

The RS507 runs its wireless radio and its scan imager from the same cell simultaneously. During a rapid scan burst, the combined current draw spikes sharply — the radio polling and the imager trigger fire in near-simultaneous pulses. If the cell voltage sags below the BMS protection threshold at that combined load, the BMS cuts output and the wireless session drops. This is most common when the pack is below 20% charge. Keep the pack above 3.6V at rest — charge before starting high-frequency scanning shifts rather than topping up mid-shift.