{"product_id":"nec-cv-30u-replacement-battery-12v-1800mah-ni-mh","title":"NEC CV-30U Replacement Battery 12V 1800mAh Ni-MH","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNEC CV-30U \/ CV-40U Series — 12V Ni-MH Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 12V, 1800mAh Ni-MH replacement battery for NEC digital cameras including the CV-30U, CV-40U, V-20U, and V-40U. It slots into the original battery compartment and connects to the camera's existing charge and discharge circuit. Capacity is 21.6Wh, matching the original cell specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eCV-30U \/ CV-40U \/ V-20U \/ V-40U compatibility:\u003c\/strong\u003e\n    These models share the same 12V battery bay, connector pinout, and BMS voltage thresholds. A single cell chemistry and form factor covers all four, and the remaining variants in the range follow the same electrical spec.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the camera body. The BMS accepted the cell, voltage held steady through the mid-discharge range, and the protection circuit tripped cleanly at the low-voltage cutoff without hard-dropping the camera.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle acceptance on NEC camera bodies:\u003c\/strong\u003e\n    Run one full charge from within the camera body or OEM charger before heavy use. Some NEC camera BMS units map the battery-remaining indicator against a charge profile recorded during the first cycle — skipping this step can cause erratic percentage readings on the display.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFlash recycling lag on a fresh NEC camera battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe flash capacitor draws a concentrated burst of current each time it recharges between shots. Ni-MH cells have a defined internal resistance, and at lower states of charge that resistance climbs, slowing the current delivery to the capacitor. This shows up as a longer-than-normal wait between flash-ready indicators. If recycling lag appears early in a session, check cell voltage — a healthy cell should read at or above 11.5V under light load at 50% charge.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping or dropping suddenly mid-shoot\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the camera's fuel gauge maps voltage thresholds against the discharge curve of the original cell, and the replacement cell's curve differs slightly — common with Ni-MH chemistry, which has a flatter mid-range voltage profile. The camera misreads where it sits on that curve and recalculates abruptly as voltage shifts. Run two or three full charge-discharge cycles to let the BMS recalibrate against the new cell's actual curve. After conditioning, the percentage readout stabilises across the discharge range.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333818941530,"sku":"BWCS-VBF2E-1","price":81.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333818974298,"sku":"BWCS-VBF2E-2","price":93.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333819007066,"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\/nec-cv-30u-replacement-battery-12v-1800mah-ni-mh","provider":"BatteryWeb","version":"1.0","type":"link"}