{"product_id":"canon-ef-s-replacement-battery-74v-1000mah-li-ion","title":"Canon LP-E8 Replacement Battery 7.4V 1000mAh Li-ion EOS 550D","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCanon EOS 550D \/ 600D \/ 650D — 7.4V Li-ion Replacement Battery (LP-E8)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe LP-E8 is a 7.4V 1000mAh Li-ion battery for Canon EOS 550D, 600D, and 650D DSLR cameras, plus the broader EF-S compatible body range. It slots directly into the LP-E8 battery bay and communicates with the camera's battery management system for charge-level reporting. Capacity listed here is from product specification — 1000mAh \/ 7.4Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEF-S body compatibility:\u003c\/strong\u003e\n    The 550D, 600D, and 650D share the same LP-E8 battery bay, voltage rail, and BMS handshake protocol. One cell works across all three bodies 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 a full charge-discharge cycle on the 600D body. The BMS accepted the cell, percentage readout tracked correctly through mid-charge, and cutoff triggered cleanly at the low-voltage threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle initialisation on Canon bodies:\u003c\/strong\u003e\n    Run the first full charge cycle inside the camera body or OEM charger before heavy shooting. Some Canon BMS firmware requires an internal charge cycle to calibrate the battery-remaining display accurately against a new cell's discharge curve.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 650D rejects a valid LP-E8 cell on first install\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCanon's BMS on the 65xD series checks cell voltage on insertion. If a new cell ships at storage voltage — typically around 3.7V per cell, giving roughly 7.4V total — the body may flag it as depleted rather than new. This triggers an \"incompatible battery\" or no-icon response on the status screen. The fix is straightforward: place the cell in the OEM charger for a full cycle before inserting it into the body. After one charge, the body reads the cell correctly and accepts it.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically during a shoot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eCanon's fuel gauge maps voltage thresholds to percentage segments calibrated to the OEM cell's discharge curve. A replacement cell with a slightly different mid-discharge voltage profile causes the indicator to skip steps — jumping from 60% to 30% with no warning. This is a display calibration issue, not a capacity fault. Running one full charge-discharge cycle inside the camera body lets the BMS re-map its thresholds against the new cell's actual curve. After that cycle, percentage readout stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333554569306,"sku":"BWCS-CNS500MU-1","price":40.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333554602074,"sku":"BWCS-CNS500MU-2","price":47.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333554634842,"sku":"BWCS-CNS500MU-3","price":52.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CNS500MU-1.webp?v=1778212934","url":"https:\/\/batteryweb.com\/products\/canon-ef-s-replacement-battery-74v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}