BearCom BC250D Replacement Battery 7.4V 3350mAh

BearCom BC250D — 7.4V Li-ion Replacement Battery

This 7.4V, 3350mAh lithium-ion battery fits the BearCom BC250D handheld two-way radio. It replaces the original pack when capacity has degraded or the battery no longer holds a charge through a full shift. Voltage and cell chemistry match the BC250D's power rail exactly.

• BC250D platform fit: The BC250D uses a 7.4V two-cell Li-ion architecture with a BMS that validates voltage and impedance on insertion. This pack matches that handshake — the radio powers on and accepts the pack without triggering a fault state.
• Bench tested on actual hardware: We cycled this pack under simulated PTT loads, including sustained transmit bursts. The BMS held voltage above the radio's low-power threshold throughout and did not trip the overcurrent cutoff during high-draw transmit events.
• First-insertion contact check: If the charger dock shows a fault LED on first insertion, remove the pack and wipe the gold contact strip with a dry cloth before reseating. The BC250D's dock needs a clean contact cycle to complete the BMS handshake before charging begins.

Why the BC250D drops to reduced TX power mid-shift on a new battery

A new Li-ion pack ships at storage voltage — typically 3.6–3.7V per cell, not the full 4.2V per cell of a charged pack. The BC250D monitors bus voltage under transmit load, and if voltage sags below its threshold during a PTT burst, the radio cuts RF output to protect the final stage. This is not a faulty battery — it is a cell that has not yet been fully charged. Charge the pack fully in the dock before first use in the field.

BC250D bar indicator shows one fewer bar than expected after swap

The BC250D uses a voltage-threshold bar indicator — each bar maps to a voltage band, not a percentage from a fuel gauge chip. A new pack at storage voltage will land in a lower band and display one or two bars even though the cells are not depleted. This causes unnecessary concern on a first insertion. Run one full charge cycle and the indicator will read correctly at the top band once the pack reaches 8.4V.