{"product_id":"bt-freestyle-50-replacement-battery-36v-600mah-ni-mh","title":"BT Freestyle 50 Replacement Battery 3.6V 600mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBT Freestyle 50 \/ 70 \/ 75 \/ 80 Series — 3.6V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.6V, 600mAh Ni-MH rechargeable battery for the BT Freestyle cordless handset range. It fits the Freestyle 50, 70, 75, and 80 among others. When the original pack loses capacity and the handset can no longer hold a charge through a call, this is the direct swap.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eFreestyle series compatibility:\u003c\/strong\u003e\n    These handsets share the same 3.6V cell configuration, connector pinout, and physical footprint across the range. One pack covers all models listed — no adapters, no wiring changes.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this pack through charge and discharge on a BT Freestyle handset. The BMS accepted charge from the base station without error and held voltage within spec across the full discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge after installation:\u003c\/strong\u003e\n    Place the handset in the base immediately after fitting and leave it for a full 16 hours before first use. Ni-MH packs arrive partially discharged from storage — a slow, uninterrupted first charge sets the baseline capacity correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eTalk time shorter than expected after fitting a new Ni-MH pack\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells do not deliver full rated capacity on the first cycle. The chemistry requires three to five full charge-discharge cycles before the cells reach their rated 600mAh. Each cycle, talk time increases noticeably. After cycle five, performance stabilises — if it does not, check that the handset is seating fully in the base and making clean contact with the charge pins.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBase station charge light not coming on after battery swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA Ni-MH pack that has sat in storage can drop low enough in voltage that the base station's charge circuit does not recognise it as a valid battery. The base expects a minimum voltage before initiating a charge cycle. Remove the handset, wait 10 seconds, and reseat it firmly — this resets the charge detection. If the light still does not activate, check the handset contacts and base cradle pins for corrosion or debris, then reseat again.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43339957567578,"sku":"BWCS-P403CL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43339957600346,"sku":"BWCS-P403CL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43339957633114,"sku":"BWCS-P403CL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-P403CL-1.webp?v=1778367001","url":"https:\/\/batteryweb.com\/products\/bt-freestyle-50-replacement-battery-36v-600mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}