{"product_id":"sony-a7-mark-3-replacement-battery-74v-2050mah-li-ion","title":"Sony NP-FZ100 Replacement Battery 7.4V 2050mAh Li-ion A7 Mark 3","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eSony A7 Mark 3 \/ A7R Mark 3 \/ Alpha 1 — 7.4V Li-ion Replacement Battery (NP-FZ100)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 7.4V, 2050mAh Li-ion replacement for the Sony NP-FZ100 battery. It fits the Alpha 7 Mark 3, Alpha 7R Mark 3, Alpha 1, Alpha 7C, and over 50 additional Sony Alpha bodies. Capacity is drawn from verified product data — 15.17Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eAlpha series compatibility:\u003c\/strong\u003e\n    Sony's NP-FZ100 platform covers a wide range of full-frame and APS-C mirrorless bodies that share the same 7.4V rail, Z-series connector, and BMS handshake protocol. One cell works across the entire lineup because the BMS authentication layer is standardised across these bodies.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on an Alpha 7 Mark 3 body. The BMS accepted the cell after one full charge via the camera's USB-C port, and the remaining-capacity indicator stabilised within the first two cycles.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle initialisation on Alpha bodies:\u003c\/strong\u003e\n    On first install, run a complete charge cycle through the camera body itself — not a standalone charger. Some Alpha BMS builds require an in-body charge to map the cell's discharge curve accurately before the shot-count estimator reads correctly.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the Alpha 7 Mark 3 drains faster during continuous video than stills shooting\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eDuring video recording, the Alpha 7 Mark 3 runs the sensor, BIONZ processor, image stabilisation, and EVF simultaneously — a combined draw that far exceeds stills use. This sustained load pulls the cell closer to its lower voltage threshold faster than burst stills cycles do. The BMS will trigger a cutoff before the cell reads 0% to protect the cell, which can look like early depletion. If the camera shuts down mid-clip, check that the body firmware is current — older firmware versions set a more conservative cutoff floor.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the Alpha 7 display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the camera's BMS hasn't yet mapped the new cell's discharge curve. The Alpha 7's indicator uses voltage-threshold tables calibrated against the OEM cell; a fresh third-party cell may have a slightly different mid-range discharge slope. Run two full charge-to-discharge cycles in the camera body to let the BMS recalibrate. After two cycles, the percentage readout should track linearly — if it still jumps at around 3.6V per cell, confirm the battery terminals are clean and seating fully in the grip.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333586026586,"sku":"BWCS-FZ100MU-1","price":56.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333586059354,"sku":"BWCS-FZ100MU-2","price":65.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333586092122,"sku":"BWCS-FZ100MU-3","price":73.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-FZ100MU_1.webp?v=1778212976","url":"https:\/\/batteryweb.com\/products\/sony-a7-mark-3-replacement-battery-74v-2050mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}