{"product_id":"zenith-vac-905-replacement-battery-12v-1800mah-ni-mh","title":"Zenith VAC-905 Replacement Battery 12V 1800mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZenith VAC-905 — 12V Ni-MH Replacement Battery (VAC-905)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 1800mAh Ni-MH replacement battery for the Zenith VAC-905 camera. It slots into the VAC-905 body and restores power to shooting, recording, and display functions. Capacity figure is sourced from product data — 21.6Wh total energy.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eVAC-905 platform fit:\u003c\/strong\u003e\n    The VAC-905 battery slot runs a 12V rail with a connector and cell format specific to this model. Ni-MH chemistry at this voltage matches the OEM BMS charge termination logic — delta-V cutoff — so the camera body reads charge state correctly without rejecting the cell.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the VAC-905 charge termination sequence and confirmed the BMS accepted the cell on first charge, reached full voltage, and released to the camera body with accurate state-of-charge reporting across the discharge curve.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle initialisation on the VAC-905:\u003c\/strong\u003e\n    Run the first full charge from inside the camera body using the OEM charger rather than a third-party charger. The VAC-905 BMS maps its battery-remaining display to a charge cycle completed in-body — skipping this step can cause the indicator to read inaccurately for several subsequent cycles.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eDead battery indicator on the VAC-905 display with a partially charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eNi-MH cells have a flatter discharge curve than Li-ion, and the VAC-905 voltage-threshold indicator can misread a new cell as depleted if it hasn't completed a calibration cycle. The camera samples terminal voltage at startup and compares it against stored thresholds — a fresh, uncharged Ni-MH cell sitting at resting voltage can fall below that threshold. Charge the replacement fully in the camera body before first use. After one complete charge-discharge cycle, the indicator maps correctly to the new cell's actual capacity.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the VAC-905 display mid-shoot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the camera's state-of-charge algorithm hasn't yet learned the discharge curve of the replacement cell. The VAC-905 uses voltage sampling to estimate remaining charge — a new Ni-MH cell discharges differently across its curve than a worn OEM cell, so early readings jump. Run two or three full charge-discharge cycles without interrupting mid-cycle. By the third cycle, the indicator stabilises and tracks the actual cell voltage to within a few percent.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333819465818,"sku":"BWCS-VBF2E-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333819498586,"sku":"BWCS-VBF2E-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333819531354,"sku":"BWCS-VBF2E-3","price":101.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-VBF2E_1.webp?v=1778213259","url":"https:\/\/batteryweb.com\/products\/zenith-vac-905-replacement-battery-12v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}