{"product_id":"icom-ic-m24-replacement-battery-37v-1500mah-li-ion","title":"Icom BP-266 Compatible Battery 3.7V 1500mAh Li-ion IC-M24","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIcom IC-M24 \/ IC-M23 — 3.7V Li-ion Replacement Battery (BP-266)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe BP-266 is a 3.7V, 1500mAh Li-ion battery for the Icom IC-M24 and IC-M23 handheld marine VHF radios. It replaces the original pack when capacity has dropped or the cell no longer holds a charge. Voltage and form factor match the OEM spec exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIC-M24 and IC-M23 compatibility:\u003c\/strong\u003e\n    Both models share the same battery bay geometry, contact layout, and BMS handshake voltage. One pack fits either radio without modification or adapter.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on the IC-M24 dock. The BMS accepted the charger handshake on first insertion and held voltage stable through repeated PTT transmit bursts without tripping overcurrent cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion on the dock:\u003c\/strong\u003e\n    If the charger shows a fault LED on initial seating, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The IC-M24 dock requires a clean contact cycle to initialise the BMS before charging begins — this is not a faulty pack.\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-M24 cuts out mid-transmission on a fresh BP-266\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eA new Li-ion cell ships at storage voltage — typically around 3.6V to 3.7V, not at full charge. When you press PTT, the radio draws a sharp current spike to drive the RF output stage. At storage voltage, that spike can push the BMS past its overcurrent threshold, triggering a momentary cutoff that kills the transmission. The fix is straightforward: charge the pack fully before the first transmit. A full charge brings cell voltage to 4.2V, giving the BMS enough headroom to absorb the PTT current surge without cutting out.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the BP-266\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IC-M24 reads battery level from cell voltage against fixed thresholds — it has no fuel gauge chip. A new pack at storage voltage sits below the top threshold, so the radio displays one or two bars even though the cell is not depleted. This is a voltage read, not a capacity fault. Charge the pack fully on the dock until the charge LED goes green, then reinsert — the bar indicator will update to full on the next power cycle.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426342174810,"sku":"BWCS-ICM240TW-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426342207578,"sku":"BWCS-ICM240TW-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426342240346,"sku":"BWCS-ICM240TW-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ICM240TW-1.webp?v=1779930720","url":"https:\/\/batteryweb.com\/products\/icom-ic-m24-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}