3M Peltor Lite-Com Basic Replacement Battery ACK03 2.4V 1200mAh

3M Peltor Lite-Com Basic — 2.4V Ni-MH Replacement Battery (ACK03)

This is a 2.4V, 1200mAh Ni-MH replacement battery for the 3M Peltor Lite-Com Basic communication headset. It replaces part number ACK03 and fits directly into the headset's battery compartment. Capacity figures come from product data — 1200mAh / 2.88Wh.

• Peltor Lite-Com Basic fit: The Lite-Com Basic runs a dedicated 2.4V Ni-MH cell — not a standard AA pair — because its internal BMS and DECT radio circuit expect that specific voltage rail and connector configuration. Swapping to a different cell type trips the charging circuit.
• Bench tested on actual hardware: We cycled this battery through the Lite-Com Basic base station and confirmed the BMS completed its handshake, accepted a charge, and delivered power to both the audio driver and DECT transmitter without cutoff under combined load.
• First charge in the base station: Place the headset in the base station and run a full uninterrupted charge cycle before your first call. The Lite-Com Basic base needs to log the new cell before its talk-time estimate becomes accurate — pulling the headset early skips that registration step.

Base station not recognising the new pack after fitting

The Lite-Com Basic base station checks cell voltage before it begins a charge cycle. A new Ni-MH cell often sits at storage voltage — typically below the threshold the base expects for a valid pack. When the base sees that low reading, it flags a charging error rather than starting a charge. Seat the battery firmly, leave the headset in the cradle undisturbed, and the base will usually recover and begin charging within a few minutes once it detects the cell voltage rise.

Headset cuts out mid-call on a fully charged battery

The Lite-Com Basic draws current simultaneously from its audio amplifier and its DECT radio transmitter — both pulling from the same small cell. Under that combined load, a degraded or shallow-cycled cell can sag below the BMS cutoff voltage even when the charge indicator shows full. This is different from short talk time — the drop is sudden and happens under peak draw, not gradual discharge. Charge the headset for a full uninterrupted cycle, then check that resting cell voltage reads at or above 2.4V before your next shift.