{"product_id":"blackview-e7-replacement-battery-38v-2750mah-li-polymer","title":"BlackView E7 Replacement Battery 3.8V 2750mAh Li-Polymer","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBlackView E7 — 3.8V Li-Polymer Replacement Battery (E7)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.8V, 2750mAh (10.45Wh) lithium-polymer cell replaces the internal battery in the BlackView E7 smartphone. It fits the E7 directly, restoring power to devices where the original cell has degraded or failed. Dimensions are 89.30 × 63.00 × 4.00mm — confirm clearance before installation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE7 platform fit:\u003c\/strong\u003e\n    The BlackView E7 uses a fixed internal cell with a specific connector pinout and BMS handshake tied to the device's charge IC. This replacement matches that pinout and voltage rail so the charge IC recognises the cell without triggering a fault state.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through full charge and discharge on the bench and monitored BMS cutoff thresholds. The protection circuit held cutoff at the expected low-voltage floor and the charge IC accepted a full CC-CV charge profile without error flags.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    On first use after installation, disable fast charging and complete one full discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes energy into an uncalibrated coulomb 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 replacement cell\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eAfter a cell swap, the fuel gauge IC still holds the old cell's discharge curve in memory. The new cell's voltage drops faster under modem and screen load than the old degraded cell did — so the IC hits its low-voltage cutoff well before the percentage reads zero. The phone interprets that hard voltage drop as an emergency shutdown, not a normal power-off. Run one full discharge to cutoff, then charge uninterrupted to 100% to push the coulomb counter through a complete reference cycle.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eUSB charging not accepted on the first cycle after fitting\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eSome charge ICs on the E7 perform a handshake with the battery BMS before allowing charge current above trickle level. On a fresh cell that has never been cycled in this specific device, that handshake can time out, leaving the phone showing a charging icon but drawing minimal current. Connect to a 5V standard charger — not a fast charger — and leave it for 20 minutes before checking again. Once the BMS completes its first recognition cycle, normal charge current resumes and fast charge protocols re-enable on subsequent cycles.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43392068649050,"sku":"BWCS-BVE700SL-1","price":20.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43392068681818,"sku":"BWCS-BVE700SL-2","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43392068714586,"sku":"BWCS-BVE700SL-3","price":25.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BVE700SL-1.webp?v=1779143561","url":"https:\/\/batteryweb.com\/products\/blackview-e7-replacement-battery-38v-2750mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}