{"product_id":"zte-blade-c320-replacement-battery-37v-1200mah-li-ion","title":"ZTE Blade C320 Li3712T42P3h634445 Replacement Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE Blade C320 \/ V815W \/ T815 — 3.7V Li-ion Replacement Battery (Li3712T42P3h634445)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1200mAh Li-ion cell for the ZTE Blade C320, V815W, and T815 smartphones. It replaces OEM part Li3712T42P3h634445 directly. The cell measures 63.05 × 43.87 × 4.30mm and fits the original battery compartment.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eBlade C320 \/ V815W \/ T815 compatibility:\u003c\/strong\u003e\n    These three models share the same battery bay dimensions, connector pinout, and 3.7V nominal voltage rail. One cell covers all three 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 charge and discharge on the Blade C320 platform. The BMS communicated correctly with the charge IC on all test units, with no premature cutoff or overcharge events recorded.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFirst-cycle calibration tip:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and run one full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins against an uncalibrated counter.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the Blade C320\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eBudget-tier Li-ion cells age unevenly at the chemistry level. The internal impedance rises while the fuel gauge IC still references the original low-impedance discharge curve. Under modem or screen load, the cell voltage collapses faster than the gauge predicts — the phone hits the hardware undervoltage threshold and shuts off while the OS still shows charge remaining. A full discharge-to-charge cycle after installation lets the coulomb counter recalibrate to the new cell's actual voltage-to-capacity curve, which reduces these cliff shutdowns significantly.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reports wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC on the Blade C320 stores a learned discharge profile from the old cell. When a new cell goes in, that stored curve no longer matches actual cell behaviour, so percentage readouts jump or stall. The fix is a single full calibration cycle: charge to 100%, let the phone discharge naturally to automatic shutdown, then charge back to 100% without interruption. After that cycle, the gauge re-anchors to the new cell and percentage reporting stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404133924954,"sku":"BWCS-ZTV815SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404133957722,"sku":"BWCS-ZTV815SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404133990490,"sku":"BWCS-ZTV815SL-3","price":28.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTV815SL-1.webp?v=1779369061","url":"https:\/\/batteryweb.com\/products\/zte-blade-c320-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}