{"product_id":"jay-tech-jay-cam-i4800-replacement-battery-37v-1600mah-li-ion","title":"JAY-tech Jay-Cam i4800 Compatible Battery 3.7V 1600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eJAY-tech Jay-Cam i4800 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V, 1600mAh Li-ion cell is a direct replacement for the JAY-tech Jay-Cam i4800 compact digital camera. It fits the i4800's battery compartment at 52.00 × 28.40 × 14.50mm and matches the original cell's voltage rail. Capacity is rated at 5.92Wh.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eJay-Cam i4800 fit:\u003c\/strong\u003e\n    The i4800 uses a single-cell 3.7V Li-ion pack with a dedicated connector pinout. This cell matches that voltage rail and physical footprint, so the door latch and contact pins seat correctly without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through the i4800's BMS under mixed still and video load. The BMS accepted the cell without rejection flags, and protection circuits triggered correctly at low-voltage cutoff.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-use charge cycle for the i4800:\u003c\/strong\u003e\n    Insert the cell and run a full charge inside the camera body or OEM charger before your first shoot. Some i4800 units need that in-body charge cycle to calibrate the battery-remaining indicator to the new cell's discharge curve.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eCamera showing dead battery indicator on a partially charged replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe i4800's fuel gauge maps voltage thresholds from the original cell's discharge curve. A new third-party cell can present a slightly different mid-range voltage, causing the indicator to read empty before the cell actually is. This is a calibration mismatch, not a fault with the cell itself. Run one full charge-to-discharge cycle inside the camera body to let the BMS re-map its thresholds to the new cell.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eBattery percentage jumping erratically on the i4800 display\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eErratic percentage readings on the i4800 happen when the BMS samples voltage during a high-draw moment — flash recharge, continuous AF, or video encode — and maps that dip to the wrong capacity segment. The indicator lurches because the camera is reading transient sag, not true state of charge. Let the cell settle at rest for 30 seconds after a burst-shooting sequence and the reading will stabilise. If the jumping persists past two full charge cycles, check that the battery contacts in the compartment are clean and making firm contact.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43333839159386,"sku":"BWCS-KLIC8000-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43333839192154,"sku":"BWCS-KLIC8000-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43333839224922,"sku":"BWCS-KLIC8000-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-KLIC8000-1.webp?v=1778213259","url":"https:\/\/batteryweb.com\/products\/jay-tech-jay-cam-i4800-replacement-battery-37v-1600mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}