{"product_id":"pentax-k-r-replacement-battery-74v-900mah-li-ion","title":"Pentax D-LI109 K-R Compatible Battery 7.4V 900mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePentax K-R \/ K-2 \/ K-S1 Series — 7.4V Li-ion Replacement Battery (D-LI109)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThe D-LI109 is a 7.4V, 900mAh Li-ion battery that fits the Pentax K-R, K-2, K2, K-S1, and compatible K-series DSLR bodies. It powers the imaging sensor, autofocus motor, LCD panel, and onboard processing during shooting sessions. Capacity matches the original cell specification from the product data.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eK-series body compatibility:\u003c\/strong\u003e\n    These Pentax bodies share the same battery bay dimensions, connector pinout, and BMS handshake protocol, which is why a single D-LI109 cell works across the K-R, K-2, and K-S1 platforms 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 K-R body and a Pentax OEM charger. The BMS accepted the cell on first contact, charge termination triggered correctly at full voltage, and the battery indicator reported status without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle initialisation on K-series bodies:\u003c\/strong\u003e\n    Run the first full charge from inside the camera body or an OEM Pentax charger — not a generic USB adapter. Some K-series bodies require one in-body charge cycle before the battery-remaining display maps correctly to the 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 slowing down mid-shoot on a new D-LI109 cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe built-in flash on K-series bodies pulls a sharp current spike to recharge the capacitor between shots. At the tail end of a discharge cycle, cell voltage sags enough that capacitor recharge slows noticeably — this is normal behaviour tied to the discharge curve, not a faulty cell. If it happens early in a charge, check that the cell was fully charged before the session. A rested, fully charged D-LI109 should sustain consistent flash recycling through the majority of its charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping or reading incorrectly on the K-R display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe K-R maps its battery indicator to specific voltage thresholds calibrated to the original cell's discharge curve. A new third-party cell can discharge along a slightly different curve, causing the indicator to skip levels or show a sudden drop. This is a display calibration issue, not a capacity fault. Running one full charge-discharge cycle through the camera body allows the BMS to recalibrate — after that, readings stabilise. If the display still jumps after two full cycles, verify resting voltage with a multimeter; a healthy cell should read between 7.2V and 8.4V.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333808324698,"sku":"BWCS-DLI109MC-1","price":38.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333808357466,"sku":"BWCS-DLI109MC-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333808390234,"sku":"BWCS-DLI109MC-3","price":49.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DLI109MC-1.webp?v=1778213126","url":"https:\/\/batteryweb.com\/products\/pentax-k-r-replacement-battery-74v-900mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}