BearCom BC250D Replacement Battery 7.4V 2200mAh Li-ion

BearCom BC250D — 7.4V Li-ion Replacement Battery

This 7.4V, 2200mAh lithium-ion battery replaces the stock pack in the BearCom BC250D portable two-way radio. It fits the BC250D directly, matching the original voltage rail and connector. Capacity is 2200mAh (16.28Wh), consistent with the factory specification.

• BC250D platform fit: The BC250D runs a 7.4V nominal Li-ion architecture. This replacement matches that voltage rail and uses the same physical latch and contact layout, so the radio's BMS handshake initialises normally on first insertion without adapter or modification.
• Bench tested on actual hardware: We cycled this pack through charge and discharge on a BC250D dock. The BMS accepted the charge cycle without fault LED, voltage stabilised at 8.2V fully charged, and the radio powered on and held TX without cutoff under sustained key-press load.
• Contact strip condition on first dock insertion: If the charger shows a fault or blinks on first seating, remove the pack and wipe the gold contact strip with a dry cloth before reseating. The BC250D dock requires a clean contact cycle to complete the BMS handshake and begin charging.

Why the BC250D cuts out mid-transmission on a new battery

When PTT is pressed, the BC250D draws a sharp current spike to power the RF output stage. A new cell shipped at storage voltage — typically around 3.7V per cell — has higher internal impedance than a fully conditioned pack. That impedance causes a brief voltage sag under transmit load. If the sag crosses the BMS undervoltage threshold, the pack trips and cuts audio. Run one full charge cycle before extended use to bring cell impedance down and allow the BMS to stabilise its cutoff reference.

Bar indicator showing one fewer bar than expected on a new pack

The BC250D uses a voltage-threshold bar indicator, not a fuel gauge chip. A new pack at storage voltage reads lower on the voltage scale than a freshly charged pack, so the radio may display one or two bars even though the cell is not depleted. This is not a fault with the battery. Charge the pack fully — dock until the charger LED goes solid green — and the indicator will reflect the correct voltage level on next power-on.