{"product_id":"zte-v72-replacement-battery-37v-3400mah-li-polymer","title":"ZTE V72 Tablet Li-Polymer Replacement Battery 3.7V 3400mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eZTE V72 \/ Velox — 3.7V Li-Polymer Replacement Battery (Li3734T42P5hC66045)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 3400mAh Li-Polymer battery for the ZTE V72, V72a, and Velox tablets. It replaces OEM part Li3734T42P5hC66045. If your tablet no longer holds a charge or shuts down unexpectedly, this cell restores full power capacity to the board.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eV72, V72a, and Velox compatibility:\u003c\/strong\u003e\n    All three models share the same 3.7V power rail, identical connector pinout, and the same BMS handshake protocol — which is why one cell covers the entire line without modification.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on a V72 unit. The BMS accepted the cell without fault flags, and the protection circuit triggered correctly at the low-voltage cutoff threshold.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration after swap:\u003c\/strong\u003e\n    After fitting this battery, run the tablet down to automatic shutoff — do not force power-off — then charge uninterrupted to 100%. This single full cycle lets the fuel gauge IC recalibrate against the new cell and eliminates the inaccurate percentage readings that almost always appear right after a replacement.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eZTE V72 shutting down at 15–25% remaining\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC still holds calibration data from the old, degraded cell. When the display and Wi-Fi run together, the combined current draw causes a voltage dip the old calibration misreads as a low-battery cutoff. The tablet shuts down even though usable charge remains. One full discharge-to-shutoff and uninterrupted recharge to 100% resets the reference points the gauge uses — after that cycle, the shutoff point drops back to the correct level near 0%.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eFast charging stops working after battery replacement on the Velox\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe Velox charge controller uses a proprietary negotiation step before enabling fast charge current. On a freshly installed cell, that negotiation sometimes fails on the first connection because the BMS has not yet completed an accepted charge cycle. Plug into the original ZTE charger — not a generic USB adapter — and let it complete one full charge without interruption. After that cycle, the controller recognises the cell and fast charge re-enables at the correct current level.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43426068889690,"sku":"BWCS-ZTV720SL-1","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43426068922458,"sku":"BWCS-ZTV720SL-2","price":31.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43426068955226,"sku":"BWCS-ZTV720SL-3","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-ZTV720SL-1.webp?v=1779930340","url":"https:\/\/batteryweb.com\/products\/zte-v72-replacement-battery-37v-3400mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}