BearCom BC1000 IC-F1000S Replacement Battery 7.4V 2250mAh

BearCom IC-F1000S Series — 7.4V Li-ion Replacement Battery (BC1000)

This 7.4V, 2250mAh Li-ion battery replaces the BC1000 pack on the Icom IC-F1000S, IC-F1000, IC-F2000T, and IC-F2000 portable two-way radios. It fits the standard battery bay and uses the same gold contact strip and BMS interface as the factory pack. Capacity is 2250mAh — 16.65Wh — matching the original specification.

• IC-F1000 and IC-F2000 platform fit: The IC-F1000 and IC-F2000 series share the same battery bay geometry, contact pitch, and 7.4V BMS handshake protocol. One pack covers both lines because the radio's charge management circuit reads the same authentication sequence across the platform.
• Bench tested on actual hardware: We ran this pack in an IC-F1000S dock and under PTT load. The BMS passed the transmit current spike without tripping, and the charger dock accepted the pack and progressed to full-charge indication without fault.
• First-insertion contact cycle on the Icom dock: If the dock shows a fault LED on first insertion, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The Icom charge dock requires a clean contact cycle to complete the BMS handshake before it begins charging.

IC-F1000S cuts out mid-transmission on a new BC1000 pack

When the PTT button is pressed, the IC-F1000S draws a sharp current spike to drive the RF output stage — typically well above steady-state draw. A new cell shipped at storage voltage (around 3.6–3.7V per cell) sits closer to the BMS undervoltage threshold than a fully charged cell does. Under that transmit spike, the BMS can interpret the momentary voltage sag as an overcurrent event and cut the pack. The fix is to fully charge the battery before the first transmission — let the dock complete a full cycle to 8.4V before use.

Bar indicator showing one fewer bar than expected after fitting a new BC1000

The IC-F1000S uses a voltage-threshold bar display — each bar corresponds to a voltage band, not a calculated charge percentage. A new pack leaves the warehouse at storage voltage, not full charge, so the radio reads it as partially depleted. This is normal cell conditioning, not a fault with the pack. Place the battery in the dock and allow a full charge cycle to complete; once the pack reaches 8.4V, the bar indicator will reflect the correct charge level.