{"product_id":"bosch-hfg-replacement-battery-48v-1200mah-ni-mh","title":"Bosch B165 HFG Replacement Battery 4.8V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBosch HFG \/ HFE Series — 4.8V Ni-MH Replacement Battery (B165)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 4.8V, 1200mAh Ni-MH replacement battery for the Bosch HFG, HFE-85, HFE-165, and HFE-455 two-way radios. It matches OEM part numbers B165, 8697322501, 8697322504, and 8697322963. Dimensions are 69.70 × 46.50 × 25.60mm — direct physical fit into the original battery compartment.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHFG and HFE platform compatibility:\u003c\/strong\u003e\n    These four models share the same 4.8V NiMH battery architecture, connector pinout, and BMS handshake protocol. One battery pack covers the entire HFE range without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this pack through charge and discharge cycles on HFE-series hardware. The BMS accepted the new cell chemistry without fault codes, and the charger dock transitioned cleanly from charge to ready state.\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 pack, wipe the gold contact strip with a dry cloth, and reseat firmly. The Bosch HFE dock requires a clean contact cycle to complete the 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 HFG cuts out mid-transmission on a freshly inserted battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HFG transmit circuit draws a short current spike the moment PTT is pressed. On a battery sitting at storage voltage — typically around 4.6V for a four-cell NiMH pack — the BMS can interpret that spike as an overcurrent event and briefly interrupt output. This is not a faulty battery. One or two complete charge cycles bring the cells to full operating voltage and stabilise internal resistance, eliminating the dropout. If the issue persists after two full charges, check the contact strip for corrosion before concluding the pack is defective.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBar indicator showing one fewer bar than expected after fitting the new pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe HFE-series radios use a simple voltage-threshold bar indicator — each bar corresponds to a voltage band, not a fuel gauge calculation. A new NiMH cell ships at storage voltage, which sits below the top threshold, so the radio displays one bar short of full. This is normal behaviour and not a capacity defect. Charge the pack fully before drawing conclusions — once the charger dock goes green and the pack reaches approximately 5.6V at rest, the indicator will display correctly.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426297512026,"sku":"BWCS-BFE850TW-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426297544794,"sku":"BWCS-BFE850TW-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426297577562,"sku":"BWCS-BFE850TW-3","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BFE850TW-1.webp?v=1779930584","url":"https:\/\/batteryweb.com\/products\/bosch-hfg-replacement-battery-48v-1200mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}