{"product_id":"panasonic-lumix-dmc-gh2-replacement-battery-74v-800mah-li-ion","title":"DMW-BLC12 Panasonic Lumix Compatible Battery 7.4V 800mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic Lumix DMC-GH2 Series — 7.4V Li-ion Replacement Battery (DMW-BLC12)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 800mAh Li-ion cell replaces the DMW-BLC12 in the Panasonic Lumix DMC-GH2, GH2H, GH2HK, GH2K, and over two dozen other Lumix bodies sharing the same battery bay. It covers both stills and video shooting. Dimensions are 48 × 36 × 17.10mm — an exact physical match to the OEM battery slot.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eGH2 platform fit:\u003c\/strong\u003e\n    Every model in this group runs the same 7.4V rail, uses the identical BLC12 connector, and shares a common BMS handshake protocol. One cell covers the full GH2 family 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 the GH2 body under combined load — continuous video, in-body stabilisation active, EVF on. The BMS accepted the cell on first install and reported charge state without error.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge cycle on the GH2:\u003c\/strong\u003e\n    Charge this cell fully inside the camera body or the Panasonic OEM charger before your first shoot. The GH2's BMS maps its battery-remaining display against a charge profile — skipping this step causes the indicator to jump erratically from the start.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the GH2 shows a dead-battery icon on a freshly charged replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe GH2 uses a voltage-threshold system to estimate remaining charge. A replacement cell fresh out of the box often sits at a storage voltage — around 3.7V per cell — which the camera reads as critically low or flat. The body hasn't yet mapped its discharge curve against this particular cell. Running one full charge-discharge cycle inside the camera teaches the BMS where the cell's actual endpoints sit, and the icon clears.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping around mid-shoot on the GH2 display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the camera's stored discharge curve doesn't align with the new cell's voltage output at mid-charge. The GH2 estimates percentage by reading terminal voltage against a fixed table calibrated to the original OEM cell. A replacement cell with a slightly different discharge slope will cause the readout to skip — dropping from 60% to 20% in a few frames, then stabilising. The fix is to fully discharge the cell in-camera to the auto-shutoff point, charge to 100% in one uninterrupted cycle, and repeat once. After two full cycles the readout stabilises. Target a full charge endpoint of 8.4V across the pack.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333807341658,"sku":"BWCS-BLC12MC-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333807374426,"sku":"BWCS-BLC12MC-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333807407194,"sku":"BWCS-BLC12MC-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BLC12MC-1.webp?v=1778213125","url":"https:\/\/batteryweb.com\/products\/panasonic-lumix-dmc-gh2-replacement-battery-74v-800mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}