{"product_id":"bendix-king-rpu416-replacement-battery-74v-1800mah-li-ion","title":"Bendix-King RPU416 Compatible Battery 7.4V 1800mAh BPRP1100","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBendix-King RPU416 \/ RPU599 Series — 7.4V Li-ion Replacement Battery (BPRP1100)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 1800mAh Li-ion battery for the Bendix-King RPU416, RPU599, RPV516, and RPV516A portable two-way radios. It replaces OEM part numbers BPRP1100, BPRP1500, and BPRP1500MH. The pack slots into the standard battery bay and connects via the same multi-pin contact strip as the original.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eRPU\/RPV platform fit:\u003c\/strong\u003e\n    The RPU416, RPU599, RPV516, and RPV516A share the same 7.4V nominal rail, battery bay dimensions, and contact pin layout. One pack covers all four models without any adapter or modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled the pack through full charge and discharge on the RPU416 platform. The BMS held cutoff at the correct low-voltage threshold and accepted the charger dock handshake on first insertion without triggering a fault LED.\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 fitting this battery, remove the pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The RPU-series dock requires a clean contact surface to complete the BMS handshake before it begins the charge cycle.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the RPU416 cuts out mid-transmission on a new battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RPU416 draws a sharp current spike the moment PTT is pressed — transmit current can reach 1.5–2A in the first milliseconds of keying. If the replacement pack arrived at storage voltage (around 3.7V per cell), the BMS may interpret that spike as an overcurrent event and cut output before the RF stage completes its ramp. This is not a faulty battery. Run one full charge cycle to bring both cells to 4.2V before field use and the BMS trip threshold will sit well above normal transmit current.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected on a fully charged pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe RPU416 reads battery level using voltage-threshold steps, not a fuel gauge chip. A new pack fresh off the charger may rest at 4.1V rather than 4.2V until the cells complete their first full absorption cycle, which causes the radio to display one bar below maximum. This is normal cell settling behaviour. After two full charge-discharge cycles the resting voltage stabilises at 4.2V and the bar indicator reflects the actual charge state correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426331033690,"sku":"BWCS-KNB150TW-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426331066458,"sku":"BWCS-KNB150TW-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426331099226,"sku":"BWCS-KNB150TW-3","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KNB150TW_1.webp?v=1779930721","url":"https:\/\/batteryweb.com\/products\/bendix-king-rpu416-replacement-battery-74v-1800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}