{"product_id":"doogee-t6-replacement-battery-38v-6000mah-li-polymer","title":"Doogee T6 Replacement Battery NBL1800 3.8V 6000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDoogee T6 \/ T6 Pro — 3.8V Li-Polymer Replacement Battery (NBL1800)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.8V, 6000mAh (22.8Wh) Li-Polymer cell that fits the Doogee T6, T6 Pro, and Homtom HT6 smartphones. It matches the original NBL1800 footprint at 97.50 × 66.18 × 5.12mm, so it seats into the battery bay without modification. Swap it when the original cell has degraded past 500 charge cycles or can no longer hold usable capacity.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eT6, T6 Pro, and Homtom HT6 fit:\u003c\/strong\u003e\n    All three devices share the same PCB layout, battery connector pinout, and BMS handshake protocol — that is why one cell covers all three. The voltage rail and NTC thermistor position are identical across the platform.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through full charge and discharge cycles on a T6 unit. The BMS accepted the new cell without triggering overcurrent cutoff, and the fuel gauge IC began tracking state-of-charge correctly after one complete cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle recalibration on the T6:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-charge cycle at standard current. This lets the fuel gauge IC map its coulomb counter against the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the T6 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe T6 uses a fuel gauge IC that builds its state-of-charge model from the discharge curve of the original cell. When a new cell goes in, the IC is still working from the old curve — so percentage readings are inaccurate until it recalibrates. You may see the phone report 40% and then jump to 15% with no warning. One full drain to auto-shutdown followed by a complete charge to 100% at standard rate resets the coulomb counter against the new cell's actual curve. After that cycle, percentage reporting stabilises.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the cell voltage drops below the modem or display load threshold before the fuel gauge expects it to. The T6's modem draws a short high-current spike during LTE transmission — if the new cell's internal resistance is slightly higher than the old one, voltage sags enough to trip the BMS undervoltage cutoff even with apparent charge remaining. The phone reads 25% but the instantaneous voltage under load falls below 3.4V. Run the first two cycles without LTE active, then reintroduce mobile data once the cell's internal resistance settles after break-in.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392050135130,"sku":"BWCS-DGT600SL-1","price":30.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392050167898,"sku":"BWCS-DGT600SL-2","price":35.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392050200666,"sku":"BWCS-DGT600SL-3","price":38.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-DGT600SL-1.webp?v=1779143471","url":"https:\/\/batteryweb.com\/products\/doogee-t6-replacement-battery-38v-6000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}