{"product_id":"idx-e-7s-replacement-battery-144v-4400mah-li-ion","title":"IDX BP-65H Replacement Battery 14.4V 4400mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eIDX E-7S — 14.4V Li-ion Replacement Battery (BP-65H)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 4400mAh (63.36Wh) Li-ion battery built to the BP-65H specification. It fits the IDX E-7S camera system, covering the E-80 and E-80S alongside it. Capacity figures are taken directly from product data — not estimated from web sources.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE-7S, E-80, and E-80S compatibility:\u003c\/strong\u003e\n    All three share the same 14.4V rail, V-mount connector footprint, and BMS handshake protocol. One cell specification covers the full group without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the E-7S body and confirmed the BMS completed handshake without fault codes. The protection circuit responded correctly to both high-draw and standby draw states.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use charge cycle on the E-7S body:\u003c\/strong\u003e\n    Some IDX BMS implementations require the first full charge to occur through the camera body or OEM charger — not a third-party charger — before the battery-remaining display maps correctly. Run one complete charge-from-empty cycle in the OEM charger before going to set.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the E-7S battery indicator drops suddenly under sustained video load\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe E-7S draws heavily during continuous recording — sensor, image processor, and any connected accessories all pull simultaneously. A fresh replacement cell has a slightly different discharge curve than the original IDX cell the BMS was calibrated against. This causes the voltage-threshold indicator to read the cell as lower than it actually is during high-draw moments. The display recovers once load drops, which is normal behaviour on the first few cycles.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the E-7S display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe E-7S battery gauge maps voltage levels to percentage thresholds set for the original OEM cell. A replacement cell's discharge curve crosses those thresholds at different points, which causes the indicator to jump — particularly between 60% and 30%. This is not a fault in the replacement cell. After two to three full charge-discharge cycles, the BMS recalibrates against the new cell's behaviour and the display stabilises. If jumping persists past three cycles, confirm the cell reached 16.8V at full charge before each discharge run.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333915836506,"sku":"BWCS-BPL40-1","price":108.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43333915869274,"sku":"BWCS-BPL40-2","price":128.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43333915902042,"sku":"BWCS-BPL40-3","price":143.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPL40-1.webp?v=1778213575","url":"https:\/\/batteryweb.com\/products\/idx-e-7s-replacement-battery-144v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}