{"product_id":"motorola-cp250-replacement-battery-74v-3600mah-li-ion","title":"Motorola CP250 HNN8133C Replacement Battery 7.4V 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola CP250 \/ GP300 Series — 7.4V Li-ion Replacement Battery (HNN8133C)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 3600mAh Li-ion pack replaces the OEM battery on Motorola CP250, CP450, CP450LS, GP300, and a range of compatible portable two-way radios. It matches the original voltage rail and physical footprint so it seats correctly in the radio body and standard Motorola drop-in charger docks. Capacity is 3600mAh (26.64Wh) — drawn from product data, not estimated.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCP250 \/ CP450 \/ GP300 platform fit:\u003c\/strong\u003e\n    These models share a common 7.4V power rail, identical battery cavity dimensions, and the same BMS handshake protocol. One cell format covers the full group — no adapters, no modified contacts.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through transmit load pulls on the CP250 platform. The BMS held steady under sustained PTT draw and tripped cleanly at the correct undervoltage threshold without latching.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock LED flashes fault on first seat, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Motorola dock runs a BMS handshake before accepting charge — a single clean contact cycle clears this in most cases.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the CP250 cuts out mid-transmission on a freshly inserted pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew Li-ion cells ship at storage voltage — typically 3.7V per cell, putting a two-cell pack around 7.4V at rest. Under a PTT transmit spike, the radio draws a surge of current that briefly collapses the terminal voltage below the BMS cutoff threshold. The BMS interprets this as a depleted or fault condition and interrupts power to protect the cells. This is not a defective battery — it is normal BMS behaviour on a cold pack at storage charge. Run the pack through one full charge cycle before use and the cutoff issue stops.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected on a new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eMotorola CP-series radios read battery level from voltage thresholds at the power rail — not a fuel gauge chip. A new pack at storage voltage sits at the boundary between the second and third bar threshold, so the display shows one bar fewer than you expect. This is a storage-voltage reading, not a capacity fault. Charge the pack fully — the radio will read the correct bar level once the pack reaches its rated 8.4V charged voltage.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426196127834,"sku":"BWCS-MKT630TW-1","price":92.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426196160602,"sku":"BWCS-MKT630TW-2","price":109.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426196193370,"sku":"BWCS-MKT630TW-3","price":122.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MKT630TW_1.webp?v=1779930437","url":"https:\/\/batteryweb.com\/products\/motorola-cp250-replacement-battery-74v-3600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}