BT-000370 Zebra MC93 Replacement Battery 3.6V 6600mAh

Zebra MC93 / MC9300 / MC9400 Series — 3.6V Li-ion Replacement Battery (BT-000370)

This 3.6V 6600mAh Li-ion battery replaces the Zebra BT-000370 pack used in the MC93, MC9300, MC9400, and MC9450 mobile computers. These rugged handhelds run barcode scanning, wireless data collection, and RFID functions across warehouse and retail floors. Capacity figure is 23.76Wh, matching the original specification.

• MC93 / MC9300 / MC9400 / MC9450 platform fit: All four models share the same battery bay geometry, contact layout, and BMS handshake protocol. The host device authenticates the pack on insertion — this replacement passes that authentication on the MC93 series without triggering a fault state.
• Bench tested on actual hardware: We ran this pack through insertion, BMS wake-up, and full charge cycles on MC9300 units. The BMS reported correct cell voltage, accepted charge from both single-slot and multi-slot cradles, and released charge to the device without interruption.
• First-shift cradle protocol: After installing, seat the scanner in its charging cradle for a complete charge cycle before putting it into a pick-and-pack rotation. The scan trigger inrush current peaks when the cell is near minimum — a fully charged cell prevents a false BMS trip on the first scan burst of the shift.

Why the MC9300 cradle shows a charging error on a new pack

Charging errors on new packs are almost always a contact resistance issue, not a pack fault. The multi-pin connector on the MC9300 battery door transfers both power and BMS data — if the gold contacts on the pack or cradle have oxidation or debris, the cradle sees an incomplete handshake and throws an error. Wipe the pack contacts and the cradle bay with a dry lint-free cloth, then reseat the pack firmly until it clicks. If the error clears within 30 seconds of reseating, contact resistance was the cause.

Scanner losing wireless connection during rapid scan bursts

The MC93 series runs both the imager and a 802.11 radio simultaneously — during a rapid scan burst, combined inrush from the scan trigger and the radio polling cycle can cause a brief voltage sag on the cell. If the sag crosses the BMS undervoltage threshold, the pack disconnects momentarily and the wireless session drops. This is more common when the cell is below 3.4V. Charge the pack above 3.6V before a high-frequency scanning shift and the sag stays within the BMS tolerance window.