{"product_id":"icom-ic-m37-replacement-battery-37v-2300mah-li-ion","title":"Icom IC-M37 BP-296 Compatible Battery 3.7V 2300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIcom IC-M37 \/ IC-M37E — 3.7V Li-ion Replacement Battery (BP-296)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BP-296 is a 3.7V, 2300mAh Li-ion battery for the Icom IC-M37 and IC-M37E handheld marine VHF transceivers. These are compact ship-to-ship and ship-to-shore radios used in demanding on-water environments. This battery slots directly into the standard battery compartment on both variants.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIC-M37 and IC-M37E compatibility:\u003c\/strong\u003e\n    Both models share the same 3.7V power rail, BP-296 footprint, and BMS handshake protocol. The battery connector pinout and contact spacing are identical across the M37 and M37E, so one part number covers both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran the BP-296 through full charge and transmit-load cycles on the IC-M37 platform. The BMS handled PTT-triggered current spikes without tripping, and the charger dock accepted the pack without a fault LED on first insertion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-insertion contact check on the IC-M37 dock:\u003c\/strong\u003e\n    If the dock shows a fault LED on initial seating, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The IC-M37 dock requires a clean contact cycle to complete the BMS handshake before charging begins.\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-M37 cuts out mid-transmission on a fresh BP-296\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at storage voltage — typically around 3.6V — not at a full 4.2V charge. When the IC-M37 transmits, it draws a sustained current spike that can push a low-state-of-charge cell below the BMS undervoltage cutoff threshold. The radio shuts off mid-PTT not because the battery is faulty, but because the BMS is protecting the cell from dropping further. Charge the BP-296 fully in the dock before first use to bring the cell to 4.2V and give the BMS the headroom it needs.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the BP-296\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IC-M37 uses a voltage-threshold bar indicator — each bar corresponds to a resting voltage band. A new cell at storage voltage reads lower than a fully charged pack, so the indicator may show one or two bars even on a brand-new battery. This is not a capacity fault. Charge the pack fully in the dock; once the cell rests above approximately 4.0V, the indicator will reflect the correct charge state.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426254356570,"sku":"BWCS-ICM371TW-1","price":49.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426254389338,"sku":"BWCS-ICM371TW-2","price":57.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426254422106,"sku":"BWCS-ICM371TW-3","price":63.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ICM371TW-1.webp?v=1779930494","url":"https:\/\/batteryweb.com\/products\/icom-ic-m37-replacement-battery-37v-2300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}