{"product_id":"icom-ic-m94d-replacement-battery-74v-2300mah-li-ion","title":"Icom BP-306 Replacement Battery 7.4V 2300mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIcom IC-M94D \/ IC-M94DE — 7.4V Li-ion Replacement Battery (BP-306)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BP-306 is a 7.4V, 2300mAh lithium-ion battery pack for the Icom IC-M94D and IC-M94DE compact VHF marine transceivers. These handheld radios are used for on-water communication — DSC distress calling, Class D MMSI operation, and standard channel monitoring. Capacity figure matches the original specification from product data: 2300mAh (17.02Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIC-M94D and IC-M94DE compatibility:\u003c\/strong\u003e\n    Both models run the same 7.4V power rail, use the same connector footprint, and share the same BMS handshake protocol — a single BP-306 pack covers both variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the pack through charge acceptance and PTT transmit-load cycles on the IC-M94D dock. The BMS held the voltage rail steady during sustained TX bursts and did not trigger overcurrent cutoff under normal channel 16 transmit loads.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock LED shows a fault on first insertion, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The IC-M94D dock requires a clean contact cycle to complete the BMS handshake before it begins charging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the IC-M94D cuts out mid-transmission on a new BP-306\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew lithium-ion cells ship at storage voltage — typically around 3.6–3.7V per cell, not full charge. When the IC-M94D draws transmit current at storage voltage, the BMS may read the combined voltage sag as a low-cell event and cut output before the radio completes the TX cycle. This is not a faulty pack. A full charge cycle before first use brings both cells to 4.2V each, which gives the BMS enough headroom to sustain the transmit current spike without triggering cutoff.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing fewer bars than expected after inserting a new BP-306\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IC-M94D uses a voltage-threshold bar indicator — each bar corresponds to a voltage band, not a percentage. A pack at storage voltage sits in the lower threshold bands, so the display shows one or two bars even though the cell capacity is full and unused. This is not a capacity defect. Charge the pack fully in the dock until the LED goes green, then power on the radio — the bar indicator will read correctly once the cells are at 4.2V per cell.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426217394266,"sku":"BWCS-ICM940TW-1","price":73.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426217427034,"sku":"BWCS-ICM940TW-2","price":86.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426217459802,"sku":"BWCS-ICM940TW-3","price":95.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ICM940TW-1.webp?v=1779930494","url":"https:\/\/batteryweb.com\/products\/icom-ic-m94d-replacement-battery-74v-2300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}