Symbol MC17 Barcode Scanner Replacement Battery 3.7V 2200mAh

Symbol MC17 / MC17T / MC17A — 3.7V Li-ion Replacement Battery (BTRY-MC17RAB0E-50)

This 3.7V, 2200mAh Li-ion battery replaces the OEM pack in the Symbol MC17, MC17T, and MC17A handheld mobile computers. These scanners are used in inventory, asset tracking, and point-of-sale environments where uptime matters. The pack matches the original voltage rail and connector spec for the MC17 platform.

• MC17 platform compatibility: The MC17, MC17T, and MC17A share the same battery bay, BMS handshake protocol, and 3.7V power rail. One replacement pack covers all three variants without modification.
• Bench tested on actual hardware: We cycled this pack through full charge and discharge on the MC17 platform. The BMS reported correct cell state, charge termination fired at the right threshold, and the scanner OS recognised the pack without errors.
• Cradle charge before first shift: After installing a new pack, seat the MC17 in its cradle and run a full charge cycle before pulling it for pick-and-pack. Scan trigger inrush current is highest when the cell is near minimum — a pre-charged cell prevents false BMS trips on the first shift.

Cradle showing charging error on a new pack

MC17 docks use spring contacts that press against gold pads on the battery. If those contacts have oxidation or debris on them, charge current cannot flow cleanly and the dock flags a fault. Wipe the battery contact pads with a dry cloth and reseat the pack firmly into the cradle. If the error clears, the dock contacts are the culprit, not the battery. If the dock still faults after two clean reseats, check the cradle contacts with a multimeter — you're looking for continuity below 0.5 ohms across each pin.

Scanner dropping wireless connection during rapid scan bursts

During fast scan sequences, the MC17 draws simultaneously from the imager and the 802.11 radio. Combined inrush can cause a brief voltage sag at the cell terminals. If the cell voltage dips below the BMS low-voltage threshold during that combined draw, the BMS cuts the load to protect the cell — and the radio drops first because it draws less priority than the scan engine. This is more common at low state of charge. Keep the pack above 30% state of charge during high-frequency scan shifts to avoid the sag window.