{"product_id":"motorola-ct150-replacement-battery-75v-1800mah-ni-mh","title":"Motorola CT150 Replacement Battery 7.5V 1800mAh HMNN4151","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola CT150 \/ CT250 \/ CT450 Series — 7.5V Ni-MH Replacement Battery (HMNN4151)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V, 1800mAh Ni-MH replacement battery for the Motorola CT150, CT250, CT450, and CT450LS portable two-way radios. It replaces a wide range of Motorola OEM part numbers including HMNN4151, PMNN4017, HNN9008, and HNN9013 variants. Capacity listed above is from product data — 13.5Wh total.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCT150 \/ CT250 \/ CT450 platform compatibility:\u003c\/strong\u003e\n    These three radio lines share the same battery bay geometry, contact pin layout, and 7.5V voltage rail. The BMS handshake protocol is identical across the series, so one pack covers all three without any modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through transmit loads on the CT250 bench unit. The BMS held steady through repeated PTT press bursts without tripping overcurrent cutoff, and charge acceptance on the standard Motorola dock registered correctly from the first insertion.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst insertion into the charger dock:\u003c\/strong\u003e\n    If the dock LED shows a fault on first seating, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The CT-series 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\"\u003eWhy the CT450 cuts out mid-transmission on a freshly inserted battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CT450 draws a sharp current spike the moment PTT is pressed — RF output pulls significantly more current than standby mode. A new Ni-MH pack shipped at storage charge sits near the lower end of its voltage window. If the BMS reads that spike as an overcurrent event, it trips protection and the radio goes silent mid-transmission. The fix is to run one or two full charge cycles through the Motorola dock before field use, which brings cell voltage up to the level where the BMS no longer misreads transmit current as a fault.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after a fresh charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CT-series radios use a simple voltage-threshold bar display — each bar maps to a voltage band, not a fuel gauge reading. A new Ni-MH cell delivered at storage voltage may show one bar low even after a first charge cycle, because Ni-MH chemistry requires two to three full charge-discharge cycles to reach peak capacity. Run the pack through the dock to full charge, use the radio until the low-battery alert triggers, then recharge fully. After two cycles the bar indicator will reflect the pack's actual 1800mAh capacity.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426360197210,"sku":"BWCS-MCT250TW-1","price":44.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426360229978,"sku":"BWCS-MCT250TW-2","price":51.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426360262746,"sku":"BWCS-MCT250TW-3","price":57.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MCT250TW-1.webp?v=1779930879","url":"https:\/\/batteryweb.com\/products\/motorola-ct150-replacement-battery-75v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}