{"product_id":"panasonic-hdc-hs300-replacement-battery-74v-4400mah-li-ion","title":"Panasonic VW-VBG6 HDC-HS300 Replacement Battery 7.4V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePanasonic HDC-HS300 Series — 7.4V Li-ion Replacement Battery (VW-VBG6)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 7.4V, 4400mAh Li-ion cell replaces the OEM VW-VBG6 battery in Panasonic HDC-HS300, HDC-TM300, HDC-HS250, and HDC-SD100 camcorders, along with 92 additional compatible models. It fits the same battery bay and uses the same connector as the original Panasonic pack. Capacity matches the VW-VBG6PPK and VW-VBG6GK variants.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eHDC and SD series compatibility:\u003c\/strong\u003e\n    These camcorders share a common 7.4V battery bay, matching three-pin connector, and BMS handshake protocol — which is why a single cell covers the full HDC\/SD lineup. Voltage rail requirements and charge termination thresholds are identical across all compatible models.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell on an HDC-HS300 body. The BMS completed a full charge cycle without triggering over-voltage protection, and discharge under continuous HD recording load stayed stable with no unexpected cutoffs.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst charge cycle on the HDC-HS300:\u003c\/strong\u003e\n    Seat this battery in the camera body and run one full charge cycle through the camera itself before extended use. The HDC-HS300 BMS maps its battery-remaining indicator against a calibration pass — skipping this step can cause the display to show inaccurate charge levels 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 HDC-HS300 reports a dead battery on a partially charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe HDC-HS300 uses a voltage-threshold mapping system to estimate remaining charge. A new third-party cell often has a slightly different resting voltage profile than the OEM pack the camera was calibrated against. When the camera reads that resting voltage, it can misinterpret a 70–80% charged cell as empty. Running one full charge-discharge cycle inside the camera body forces the BMS to re-anchor its reference points to the new cell's curve. After that cycle, the indicator tracks accurately.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically mid-recording on the HDC-HS300\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eDuring sustained HD video recording, the HDC-HS300 draws on sensor readout, image stabilisation, and the hard disk drive simultaneously — this combined load causes real-time voltage sag that the indicator misreads as sudden capacity loss. The percentage can drop sharply and then recover when load eases. This is not a faulty cell — it reflects the indicator reacting to instantaneous voltage rather than state-of-charge. If the jumps are severe, confirm the battery resting voltage sits at 8.4V immediately after a full charge before inserting it into the body.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333810585690,"sku":"BWCS-VBG360-1","price":39.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333810618458,"sku":"BWCS-VBG360-2","price":45.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333810651226,"sku":"BWCS-VBG360-3","price":50.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VBG360-1.webp?v=1778213259","url":"https:\/\/batteryweb.com\/products\/panasonic-hdc-hs300-replacement-battery-74v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}