{"product_id":"oneplus-6t-replacement-battery-385v-3600mah-li-polymer","title":"OnePlus 6T BLP685 Compatible Battery 3.85V 3600mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eOnePlus 6T \/ A6010 \/ A6013 — 3.85V Li-Polymer Replacement Battery (BLP685)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3600mAh Li-Polymer cell at 3.85V, built to the BLP685 specification. It fits the OnePlus 6T across all regional variants — A6010 and A6013. The battery powers every function of the phone: processor, display, modem, and sensors.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eA6010 and A6013 compatibility:\u003c\/strong\u003e\n    Both variants share the same battery bay dimensions, connector pinout, and BMS handshake protocol. The BLP685 cell addresses all three — same 73.82 × 60.66 × 4.65mm footprint, same flex connector, same thermistor line.\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 a 6T unit. The BMS accepted the cell without fault flags, fast-charge negotiation completed on the second cycle, and the fuel gauge IC tracked state-of-charge without erratic jumps after one full calibration cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle fuel gauge reset:\u003c\/strong\u003e\n    After installation, disable Warp Charge and run one full discharge down to automatic shutdown, then charge to 100% on standard charging. The OnePlus fuel gauge IC recalibrates its coulomb counter against the new cell's discharge curve during that first cycle — skip this and the percentage readout will drift.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the 6T reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe OnePlus 6T uses a coulomb-counting fuel gauge IC that builds its charge model from the original cell's discharge curve. When a new cell goes in, the IC still references the old curve — so the percentage shown on screen doesn't match the actual charge in the new cell. This mismatch produces readings that appear stuck, jump suddenly, or show 100% with no reserve left. One complete discharge-to-shutdown followed by a full standard charge corrects the model and locks the gauge to the new cell's actual behaviour.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% remaining on a fresh BLP685 cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem or display draws a high current spike and the cell voltage drops below the BMS cutoff threshold — even though the gauge still shows charge remaining. It's a voltage-cliff issue, not a capacity issue: the fuel gauge IC hasn't yet mapped where the new cell's voltage drops steeply under load. Run the first-cycle calibration described above, and verify the shutdown stops occurring below 15%. If shutdown continues after calibration, check that the flex connector is fully seated — a loose contact raises internal resistance and accelerates voltage sag under load.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392012681306,"sku":"BWCS-OPA610SL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392012714074,"sku":"BWCS-OPA610SL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392012746842,"sku":"BWCS-OPA610SL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OPA610SL-1.webp?v=1779142904","url":"https:\/\/batteryweb.com\/products\/oneplus-6t-replacement-battery-385v-3600mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}