{"product_id":"motorola-ct150-replacement-battery-75v-2500mah-ni-mh","title":"Motorola CT150 Replacement Battery PMNN4017 7.5V 2500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMotorola CT150 \/ CT250 \/ CT450 Series — 7.5V Ni-MH Replacement Battery (PMNN4017)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.5V, 2500mAh Ni-MH replacement battery for the Motorola CT150, CT250, CT450, and CT450LS portable two-way radios. It matches OEM part numbers PMNN4017, PMNN4018, PMNN4019AR, PMNN4020, PMNN4021, and PMNN4053. Slot it into any compatible CT-series dock and it charges the same way as the factory pack.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCT-series platform fit:\u003c\/strong\u003e\n    The CT150 through CT450LS share the same battery bay geometry, contact layout, and 7.5V rail. One pack covers the full lineup because Motorola kept the BMS handshake and connector pinout consistent across this radio family.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack in a CT250 dock and monitored BMS response through full charge and a PTT transmit load. The BMS held the 7.5V rail steady under transmit current draw and released cleanly at end-of-charge without fault triggering.\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 on first insertion, remove the battery, 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 begins 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 fresh pack\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells ship at partial storage voltage — typically 1.0–1.1V per cell — not at full charge. When PTT is pressed, transmit current spikes sharply, and cells at storage voltage can sag below the BMS low-voltage cutoff threshold. The radio interprets this as a depleted pack and shuts TX. Running one full charge cycle before field use brings each cell to its rated 1.2V nominal, which gives the BMS enough headroom to handle the transmit surge without tripping.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after swapping to this pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe CT-series radios read battery level using simple voltage thresholds, not a chip that tracks charge history. A new pack at storage voltage sits below the threshold for the top bar, so the indicator reads one bar low even though the pack is not faulty. Charge the battery fully in the dock — cell voltage will climb to approximately 8.4–8.5V at end-of-charge — and the indicator will move to the correct bar level on next power-on.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426357477466,"sku":"BWCS-MCT251TW-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426357510234,"sku":"BWCS-MCT251TW-2","price":75.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426357543002,"sku":"BWCS-MCT251TW-3","price":84.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MCT251TW-1.webp?v=1779930880","url":"https:\/\/batteryweb.com\/products\/motorola-ct150-replacement-battery-75v-2500mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}