BP-265 Icom IC-3101 Replacement Battery 7.4V 2600mAh

Icom IC-F3001 / IC-3101 Series — 7.4V Li-ion Replacement Battery (BP-265)

This is a 7.4V, 2600mAh Li-ion battery for the Icom IC-3101, IC-4101, IC-F3001, IC-F3002, and compatible models in the BP-265 platform. It replaces OEM part numbers BP-265 and BP-265LI. Drop it into any dock or side-charge cradle built for this series and it seats on the same gold contact strip as the factory pack.

• IC-F3001 / IC-3101 platform fit: These models share a common voltage rail at 7.4V nominal and use the same BP-265 BMS handshake profile. The connector orientation and latch geometry are identical across the listed 18+ models, so one pack covers the full fleet without rewiring or adapter plates.
• Bench tested on actual hardware: We cycled this pack through transmit loads on an IC-F3001 chassis. The BMS held the 7.4V rail steady through sustained PTT events and triggered overcurrent protection cleanly at the expected threshold — no false cutoffs under normal field loads.
• First insertion into the dock: If the charger shows a fault LED on first seating, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The Icom dock requires a clean contact cycle to complete the BMS handshake before it begins charging — a smudged contact is the most common cause of a first-insertion fault.

IC-F3001 charger dock fault LED after BP-265 swap

The Icom rapid-charge dock reads BMS data through the gold contact pins before it opens the charge circuit. A new BP-265 ships at storage voltage — typically around 3.7–3.8V per cell — which sits below the dock's ready-to-charge acceptance threshold on some firmware revisions. The dock interprets this as a fault rather than a low cell. Seat the battery, wait 10 seconds, remove it, and reseat once. If the fault LED persists, check that all three gold contacts are making flush contact — a bent pin on the dock is a separate issue from the pack itself.

Bar indicator showing one fewer bar than expected on a new BP-265

The IC-3101 and IC-F3001 series use a voltage-threshold bar indicator — no fuel gauge chip, just fixed voltage breakpoints. A new pack at storage voltage reads lower than a fully charged one, so the radio displays one or two bars even though the cells are not depleted. Run the pack through one full charge cycle in the dock until the green LED confirms completion. After that first full charge, the bar count will reflect actual cell state.