{"product_id":"plum-e700-replacement-battery-37v-1550mah-li-polymer","title":"Plum E700 Replacement Battery 3.7V 1550mAh PM-BATE700","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003ePlum E700 \/ RAM 7 — 3.7V Li-Polymer Replacement Battery (PM-BATE700)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1550mAh (5.74Wh) lithium-polymer cell built to fit the Plum E700 and RAM 7 smartphones. It replaces OEM part number PM-BATE700 directly. If your original battery swells, refuses to hold charge, or causes unexpected shutdowns, this cell restores normal operation.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE700 and RAM 7 shared platform:\u003c\/strong\u003e\n    Both models run the same battery bay dimensions — 69.80 × 40.00 × 5.80mm — and use the same connector pinout and BMS handshake protocol. One cell fits both 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 E700 hardware. The BMS accepted the cell without a protection trip, and the charge IC stepped through CC\/CV phases as expected with no thermal events.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, disable fast charging for one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging is applied to an uncalibrated cell — preventing erratic percentage readings from the first day.\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 Plum E700 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff failure, not a capacity problem. The fuel gauge IC on the E700 was calibrated to the discharge curve of the original cell. When the new cell's voltage drops faster under modem or display load than the IC expects, it reads the remaining capacity as higher than actual — until the cell hits the BMS low-voltage cutoff and the phone shuts off. One full discharge-to-shutdown followed by a complete charge resets the coulomb counter and re-anchors the gauge to the new cell's curve. After two or three full cycles, the percentage reading stabilises and the shutdowns stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after sitting in storage with a flat battery\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eIf the cell discharged below approximately 2.5V during storage, the BMS locks out to prevent damage from deep discharge. The phone will show nothing when you press the power button — no logo, no charging animation. Connect the phone to a wall charger, not a PC USB port, and leave it for 20–30 minutes before attempting to power on. The charge IC needs to deliver a low-current trickle to bring the cell above the BMS re-enable threshold, which sits around 2.8–3.0V, before normal charging and boot can proceed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43391847956570,"sku":"BWCS-PLE700SL-1","price":23.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43391847989338,"sku":"BWCS-PLE700SL-2","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43391848022106,"sku":"BWCS-PLE700SL-3","price":29.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-PLE700SL-1.webp?v=1779142388","url":"https:\/\/batteryweb.com\/products\/plum-e700-replacement-battery-37v-1550mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}