{"product_id":"canon-eos-1d-markiii-replacement-battery-111v-2600mah-li-ion","title":"Canon LP-E4N EOS-1D MarkIII Replacement Battery 11.1V 2600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eCanon EOS-1D Mark IV \/ 1Ds Mark III — 11.1V Li-ion Replacement Battery (LP-E4N)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is an 11.1V, 2600mAh Li-ion replacement for the Canon LP-E4N battery pack. It fits the EOS-1D Mark III, EOS-1D Mark IV, EOS-1Ds Mark III, and 580EX-II Speedlite, among other compatible bodies. Capacity figure is sourced from the product specification — 28.86Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEOS-1D and 1Ds series compatibility:\u003c\/strong\u003e\n    These bodies share the same LP-E4N battery bay, voltage rail, and BMS handshake protocol. One cell works across the Mark III and Mark IV variants without modification to contacts or firmware.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through Canon's LC-E4N charger and through in-body charging on an EOS-1D Mark IV body. The BMS accepted the cell on the first charge pass and reported accurate state-of-charge through the display.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle camera body charge:\u003c\/strong\u003e\n    On first install, run a full charge cycle from inside the camera body or via the OEM LC-E4N charger before a shoot. Some EOS-1D bodies require one complete charge cycle to calibrate the battery-remaining display to 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\"\u003eFlash recycling drag on the EOS-1D with LP-E4N replacement cells\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe 580EX-II draws a sharp capacitor-recharge current burst after each flash pop. A cell with even moderate internal resistance will show voltage sag during that recharge window. On an EOS-1D body running continuous burst with flash, this shows up as longer recycle gaps toward the end of a charge. A fresh LP-E4N replacement at full charge keeps internal resistance low, so recharge current flows without the sag. If recycling slows progressively across a single charge, the cell's internal resistance has likely climbed — check voltage at rest; a healthy cell at half charge should sit above 10.8V.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the EOS-1D display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EOS-1D Mark III and Mark IV map battery percentage to fixed voltage thresholds calibrated against Canon's original cell discharge curve. A replacement cell with a slightly different discharge profile hits those thresholds at different points, so the indicator can jump — for example, dropping from 60% to 20% without an obvious draw event. This is a display calibration issue, not a capacity fault. Run two full charge-discharge cycles through the camera body to let the BMS build a voltage-to-capacity map against the new cell. After two cycles, the percentage display typically stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333621907546,"sku":"BWCS-CPN400MC-1","price":64.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333621940314,"sku":"BWCS-CPN400MC-2","price":76.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333621973082,"sku":"BWCS-CPN400MC-3","price":85.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-CPN400MC-1.webp?v=1778212975","url":"https:\/\/batteryweb.com\/products\/canon-eos-1d-markiii-replacement-battery-111v-2600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}