{"product_id":"alcatel-ee70-replacement-battery-37v-2150mah-li-ion","title":"Alcatel EE70 Compatible Battery TLi021F7 3.7V 2150mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAlcatel EE70 \/ EE70VB — 3.7V Li-ion Replacement Battery (TLi021F7)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2150mAh (7.96Wh) Li-ion battery for the Alcatel EE70 and EE70VB portable mobile hotspot. It replaces part number TLi021F7 directly. When the original cell degrades and the hotspot can no longer hold a usable charge away from a power outlet, this restores that portability.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEE70 and EE70VB compatibility:\u003c\/strong\u003e\n    Both the EE70 and EE70VB use the same TLi021F7 cell with identical voltage rails, connector pinout, and BMS communication protocol — a single replacement covers both variants.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this battery through full charge and discharge on the EE70 platform. The BMS handshake completed correctly, charge termination triggered at 4.2V, and low-voltage cutoff engaged as expected — no false shutdowns during the test cycle.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eVentilation during extended hotspot sessions:\u003c\/strong\u003e\n    Keep the EE70 on a hard, flat surface when running extended sessions. When connected devices are far from the hotspot, the cellular radio pushes to maximum output power — that heat build-up sits directly against the battery cell and accelerates cell degradation over time.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEE70 dropping connected devices mid-session on a new battery\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe EE70 runs both a cellular modem and a Wi-Fi radio simultaneously. Under maximum load — several devices connected, cellular signal weak — current draw spikes sharply. If the cell voltage sags below the BMS protection threshold during that spike, the BMS cuts power momentarily and the hotspot resets, dropping every connected device. A fresh cell with full capacity handles these surges better than a degraded original. If drops persist after fitting the new battery, reduce the number of connected devices or move closer to a cellular tower to lower modem output power.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEE70 won't power on after sitting in a drawer for several months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells self-discharge slowly during storage. If the EE70 sat unused long enough, the battery may have dropped below the minimum boot voltage — typically around 3.0V — and the BMS locks out to prevent damage. Plugging it in and waiting will not always recover it because the charger circuit itself needs the BMS to respond first. Fitting a fresh TLi021F7 cell resolves this immediately. Power on after fitting and allow a full charge cycle to 4.2V before use.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43377814765658,"sku":"BWCS-OTE700SL-1","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43377814798426,"sku":"BWCS-OTE700SL-2","price":27.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43377814831194,"sku":"BWCS-OTE700SL-3","price":30.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-OTE700SL-1.webp?v=1778773880","url":"https:\/\/batteryweb.com\/products\/alcatel-ee70-replacement-battery-37v-2150mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}