{"product_id":"kyocera-u4r-replacement-battery-37v-1100mah-li-ion","title":"Kyocera U4R Replacement Battery BP-1100S 3.7V 1100mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eKyocera U4R Series — 3.7V Li-ion Replacement Battery (BP-1100S)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1100mAh lithium-ion replacement for the original BP-1100S battery. It fits the Kyocera U4R, U4RB, and U4RBK digital cameras. Same voltage, same footprint, same connector pin layout as the factory cell.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eU4R, U4RB, U4RBK compatibility:\u003c\/strong\u003e\n    All three models share the same battery bay dimensions, connector pinout, and BMS voltage thresholds — 3.7V nominal, 4.2V charge ceiling. One cell fits all three without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the U4R body and an OEM-compatible charger. The BMS accepted charge handshake on first insertion and held charge termination at 4.2V without deviation.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration on the U4R body:\u003c\/strong\u003e\n    Before heavy shooting, run the first full charge directly through the camera body rather than a standalone charger. The U4R's battery indicator maps its percentage display to a charge curve it reads during that first in-body cycle — skipping it can cause the indicator to read inaccurately for several sessions.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the U4R battery percentage jumps erratically after a replacement cell is installed\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe U4R uses a voltage-threshold method to estimate remaining charge. The camera maps specific voltage levels — typically 3.6V, 3.75V, and 4.0V — to display steps on its indicator. A new cell has a slightly different discharge curve than a worn original, so the camera reads voltage drops at unexpected points and the percentage jumps. This corrects itself after one or two full discharge-and-charge cycles. Run the battery down to auto-shutoff, then charge fully to 4.2V to let the camera recalibrate its voltage map.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eU4R showing dead battery icon immediately after inserting a charged replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage sits just below the camera's minimum recognition threshold — usually under 3.5V — after shipping or storage. The camera sees insufficient voltage on the sense pin and throws the dead-battery indicator before attempting to read capacity. Remove the cell, place it in a standalone charger, and bring it up to at least 3.6V. Once it clears that threshold, the U4R body will recognise it normally on reinsertion.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333836308570,"sku":"BWCS-BP1100-1","price":22.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43333836341338,"sku":"BWCS-BP1100-2","price":25.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43333836374106,"sku":"BWCS-BP1100-3","price":27.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BP1100-1.webp?v=1778213245","url":"https:\/\/batteryweb.com\/products\/kyocera-u4r-replacement-battery-37v-1100mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}