About this replacement
Symbol MC3000 / MC3090 Series — 3.7V Li-ion Replacement Battery (55-060112-86)
This 3.7V 6800mAh Li-ion battery replaces the original pack in the Symbol MC30, MC3000, MC3070, and MC3090 handheld barcode scanners. These devices are common in retail stockrooms, distribution centres, and warehouse pick-and-pack operations where scan cycles run continuously across long shifts. The battery slots into the same bay and connects via the same contact array as the OEM pack.
- MC30 series platform fit: The MC3000, MC3070, and MC3090 share the same battery bay geometry, contact pin layout, and BMS handshake protocol. One battery spec covers all three variants because Zebra/Symbol kept the power rail consistent across the platform revision cycle.
- Bench tested on actual hardware: We ran this pack in an MC3090 cradle and triggered repeated scan bursts while monitoring the BMS. The cell voltage held stable through the inrush current peaks from the laser or imager module, and the BMS did not trip under normal combined wireless and scan load.
- First-shift prep for pick-and-pack use: After installing the new pack, seat the scanner in its charging cradle and run a full charge cycle before the shift starts. Scan trigger inrush current is highest when the cell is near minimum voltage — a pre-charged pack prevents a false BMS cutoff during the first heavy scan burst of the shift.
Cradle showing a charging error on a new pack
The MC30 cradle reads the battery through spring-loaded contact pins on the base of the scanner. If those contacts are dirty or oxidised — common in dusty warehouse environments — the dock registers high resistance and throws a charging fault even though the battery itself is fine. Wipe the gold contacts on both the battery and the scanner base with a dry cloth or isopropyl swab before reseating. Re-dock and hold the scanner firmly in place for five seconds. The charge indicator should switch to solid amber, confirming handshake and active charging.
Scanner losing wireless connection during rapid scan bursts
During a fast scan burst, the imager or laser draw and the 802.11 radio polling fire simultaneously. On a weakened or deeply discharged cell, that combined inrush pulls the voltage below the radio module's minimum operating threshold, causing the wireless link to drop. The scanner may re-associate automatically, but in high-frequency picking environments this shows up as repeated disconnects mid-session. Start each shift with the battery charged above 3.6V per cell — check via the scanner's battery status menu under Settings — to keep enough headroom for the combined radio and scan load.