About this replacement
Symbol MC3000 / MC3090 Series — 3.7V Li-ion Replacement Battery (BTRY-MC30EABOE)
This 3.7V, 2600mAh Li-ion battery fits the Symbol MC30, MC3000, MC3070, and MC3090 series handheld barcode scanners. It matches the original cell voltage, connector, and BMS communication protocol so the host device accepts the pack without a firmware flag. Capacity is sourced from the product specification — 2600mAh, 9.62Wh.
- MC3000 / MC3070 / MC3090 platform fit: These models share the same battery bay geometry, 3.7V rail, and BMS handshake. One pack covers the full MC30 family without pin remapping or adapter plates.
- Bench tested on actual hardware: We cycled this pack through full charge and discharge on the MC3090 platform. The BMS held cutoff correctly at both the top and bottom voltage thresholds, and the host scanner reported full charge state without error codes.
- First-shift cradle protocol: After installing a new pack, seat the scanner in its charging cradle and run a complete charge cycle before putting the unit into pick-and-pack rotation. Scan trigger inrush current spikes highest when the cell sits near its minimum — a fully charged cell prevents false BMS trips on the opening scan burst of a shift.
Cradle showing charging error on a new MC30 pack
The MC3000 series cradle reads pack state through the contact array on the battery's base. Oxidation or residue on those contacts raises resistance enough for the dock to report a charging fault even when the pack itself is functional. Wipe the gold contacts on both the battery and the cradle slot with a dry lint-free cloth, then reseat the pack firmly until you hear the retention click. If the error clears, the pack is charging normally — the cradle fault code was contact resistance, not a bad cell.
Scanner losing wireless connection during a rapid scan burst
On the MC3090 with an 802.11 radio active, the scan trigger and the wireless transmitter draw current simultaneously during a fast scan sequence. If the cell voltage sags below the radio's operating floor during that combined inrush, the wireless stack drops and the scanner shows a disconnection event. This is more likely on a partially discharged pack or a cell that has aged into higher internal resistance. Start each shift from a full charge, and check pack voltage at the contact pins — a healthy cell should hold above 3.5V under load during an active scan burst.