{"product_id":"praktica-dmmc-10-replacement-battery-37v-900mah-li-ion","title":"Praktica DMMC-10 Compatible Battery 3.7V 900mAh Li-ion","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePraktica DMMC-10 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 900mAh (3.33Wh) lithium-ion battery is a direct cell replacement for the Praktica DMMC-10 digital camera. It fits the DMMC10 variant as well. Voltage and capacity match the original specification exactly.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eDMMC-10 and DMMC10 compatibility:\u003c\/strong\u003e\n    Both model designations share the same battery bay dimensions, connector orientation, and 3.7V nominal voltage rail. The cell dimensions — 46.20 × 34.14 × 5.68mm — match the original form factor so the battery seats 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 charge and discharge on the DMMC-10 platform. The BMS accepted charge current without flagging an error, and the camera's display functions and image capture ran without unexpected cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting a new cell, run one full discharge from 100% to automatic shutoff, then charge uninterrupted to 100% before shooting. This lets the camera's fuel gauge IC map its reference curve to the new cell's actual discharge profile — without it, the percentage counter can read inaccurately from the first session.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the DMMC-10 shuts down suddenly at 20–30% charge remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eAn aged cell develops a steeper voltage cliff in its lower charge range. When the camera draws current for the LCD or write cycle, the cell voltage drops sharply below the BMS cutoff threshold — even though the gauge still shows charge remaining. This happens because the fuel gauge IC was calibrated to the old cell's curve, not the new one. One full discharge-to-shutoff cycle followed by a full charge resets that calibration and eliminates most premature shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically after cell replacement\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe DMMC-10's fuel gauge IC uses a coulomb counter that references stored data from the previous cell's charge curve. When a new cell with a different internal resistance profile is installed, the counter loses accuracy and the displayed percentage can jump several points between shots. This is not a fault with the replacement cell. A single full discharge-charge cycle forces the IC to rebuild its reference data against the new cell, after which percentage readout stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43405107495002,"sku":"BWCS-NK5BHL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43405107527770,"sku":"BWCS-NK5BHL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43405107560538,"sku":"BWCS-NK5BHL-3","price":33.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK5BHL-1.webp?v=1779369992","url":"https:\/\/batteryweb.com\/products\/praktica-dmmc-10-replacement-battery-37v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}