{"product_id":"motorola-ct150-replacement-battery-74v-2600mah-li-ion","title":"Motorola CT150 HMNN4151 Replacement Battery 7.4V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola CT150 \/ CT250 \/ CT450 Series — 7.4V Li-ion Replacement Battery (HMNN4151)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 2600mAh Li-ion battery replaces the original pack on Motorola CT150, CT250, CT450, and CT450LS two-way radios. It cross-references over 35 OEM part numbers including HMNN4151, HMNN4154, PMNN4017, and HNN9008. The CT series radios are compact portables used in security, retail, and hospitality environments where reliable shift-long communication is critical.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCT150 \/ CT250 \/ CT450 platform fit:\u003c\/strong\u003e\n    These models share the same battery bay footprint, connector pinout, and 7.4V voltage rail. The BMS handshake protocol is consistent across the CT series, so one pack covers all three variants without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through full charge and discharge on the CT450 dock. The BMS held cutoff voltage correctly at both ends and showed no false overcurrent trips under simulated PTT transmit current draw.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock shows a fault LED on first insertion, remove the battery, wipe the gold contact strip with a dry cloth, and reseat firmly. The CT series charger requires a clean contact cycle to accept the new 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 CT450 drops to reduced TX power mid-shift on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNew Li-ion cells ship at storage voltage — typically 3.6–3.7V per cell — not at full charge. Under sustained RF output, the radio's voltage regulation circuit sees marginal headroom and steps down transmit power to protect the transceiver. This is not a faulty pack. A full charge cycle before field deployment puts both cells above 4.1V and gives the radio the headroom it needs to hold rated TX power through a full shift.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator shows one fewer bar than expected after inserting new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CT series uses voltage-threshold bar indicators, not a fuel gauge chip. Storage voltage on a fresh Li-ion pack sits below the top threshold, so the radio displays one or two bars even on a brand-new battery. This clears after one full charge — the dock needs to bring each cell to at least 4.15V before the top bar threshold registers. Seat the battery in the dock and allow a complete charge cycle before reading the indicator.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426329821274,"sku":"BWCS-MTK241TW-1","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426329854042,"sku":"BWCS-MTK241TW-2","price":55.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426329886810,"sku":"BWCS-MTK241TW-3","price":61.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MTK241TW-1.webp?v=1779930785","url":"https:\/\/batteryweb.com\/products\/motorola-ct150-replacement-battery-74v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}