{"product_id":"sony-hdw-790wsp-replacement-battery-144v-4400mah-li-ion","title":"Sony E-80S Professional Camera Replacement Battery 14.4V 4400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony HDW-790WSP \/ DSR-300PK Series — 14.4V Li-ion Replacement Battery (BP-L40A)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 14.4V, 4400mAh (63.36Wh) lithium-ion battery pack for Sony professional broadcast and ENG camcorders. It fits the HDW-790WSP, DSR-300PK, DSR-250, DNW-90, and over 178 additional Sony camcorder bodies that use the BP\/E-series brick form factor. OEM part numbers covered include E-80S, E-50S, E-70S, BP-L40A, BP-L60, BP-GL95, BP-L90A, and related variants.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBP\/E-series brick platform:\u003c\/strong\u003e\n    These camcorder bodies share a common battery rail voltage, identical brick connector pinout, and the same BMS communication protocol. One cell specification covers the full platform because Sony standardised the 14.4V architecture across this broadcast product line for interoperability on multi-camera shoots.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through the HDW-790WSP body and a compatible Sony charger. The BMS completed its handshake, cell protection tripped correctly at the low-voltage cutoff, and charge acceptance was normal across both the camera body and external charger paths.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-install charge cycle for broadcast bodies:\u003c\/strong\u003e\n    Before your first heavy shoot, run one full charge cycle through the OEM Sony charger or camera body — not a generic third-party charger. Broadcast-grade Sony bodies perform a BMS initialisation on the first full charge cycle, which is what calibrates the battery-remaining indicator on the viewfinder display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the HDW-790WSP battery indicator reads inaccurate after fitting a replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eSony broadcast camcorders map their battery-remaining display to a voltage-threshold curve stored in the camera body, not the battery itself. A new cell has a slightly different resting voltage profile at partial states of charge compared to a worn OEM cell, so the indicator can read high or low until the body recalibrates. Running one complete discharge-to-cutoff cycle followed by a full charge through the camera body resets this mapping. After that cycle, the indicator typically tracks the new cell accurately through normal use.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the viewfinder during recording\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis symptom usually points to the camera body reading instantaneous voltage dips rather than a smoothed state-of-charge value. During HD recording, the combined draw from the sensor, codec processor, and image stabilisation causes brief voltage sag on the cell. If the BMS threshold sits close to a percentage boundary, the indicator flickers between two values as draw rises and falls. Verify the cell is fully charged — resting voltage at 100% should be approximately 16.8V — then allow one full recording session for the body to build a stable discharge profile.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333916164186,"sku":"BWCS-BPL40-1","price":108.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43333916196954,"sku":"BWCS-BPL40-2","price":128.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43333916229722,"sku":"BWCS-BPL40-3","price":143.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BPL40-1.webp?v=1778213575","url":"https:\/\/batteryweb.com\/products\/sony-hdw-790wsp-replacement-battery-144v-4400mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}