{"product_id":"icom-ic-f52d-replacement-battery-74v-3300mah-li-ion","title":"Icom BP-290 7.4V Two-Way Radio Replacement Battery 3300mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIcom IC-F52D \/ IC-F62D \/ IC-M85 — 7.4V Li-ion Replacement Battery (BP-290 \/ BP-294)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 3300mAh lithium-ion battery replaces the Icom BP-290 and BP-294 packs. It fits the IC-F52D, IC-F62D, and IC-M85 two-way radios. Voltage and form factor match the OEM spec — the pack seats and locks the same way as the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eIC-F52D, IC-F62D, and IC-M85 compatibility:\u003c\/strong\u003e\n    All three models share the same 7.4V rail, battery footprint, and BMS handshake protocol. One pack covers the full platform — no hardware modification needed.\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 transmit cycles on the IC-F52D. The BMS accepted the charger handshake on first insertion, held voltage under PTT load, and tripped protection correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion contact check:\u003c\/strong\u003e\n    If the charger dock shows a fault LED after inserting a new pack, remove the battery and wipe the gold contact strip with a dry cloth before reseating. The Icom dock requires a clean contact cycle to complete the BMS handshake before it will begin charging.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eIC-F52D transmit cutout on a new BP-290 pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNew lithium-ion cells ship at storage voltage — typically 3.6–3.7V per cell, not full charge. When you key up for the first time, the transmit current spike can pull the pack voltage below the BMS overcurrent threshold before a full charge cycle has run. The radio interprets this as a fault and cuts the RF output. A full charge cycle before first use brings both cells to 4.2V each and gives the BMS enough headroom to handle the PTT current draw without tripping.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe IC-F52D uses a voltage-threshold bar indicator — each bar maps to a voltage band, not a calculated capacity percentage. A new pack at storage voltage sits in a lower band than a fully charged one, so the radio correctly displays fewer bars. This is not a fault with the cell. Charge the pack fully in the Icom dock until the LED goes green, then reinsert — the bar display will read at the top of the scale at 8.4V across the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426296725594,"sku":"BWCS-ICF622TW-1","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426296758362,"sku":"BWCS-ICF622TW-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426296791130,"sku":"BWCS-ICF622TW-3","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ICF622TW-1.webp?v=1779930584","url":"https:\/\/batteryweb.com\/products\/icom-ic-f52d-replacement-battery-74v-3300mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}