{"product_id":"evolveo-ep-600-replacement-battery-37v-1200mah-li-ion","title":"EP-600 Evolveo Smartphone Replacement Battery 3.7V 1200mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eEvolveo EP-600 — 3.7V Li-ion Replacement Battery (EP-600)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis 3.7V 1200mAh Li-ion battery replaces the original cell in the Evolveo EP-600 smartphone. It fits the EP-600 directly and restores power when the original cell can no longer hold a usable charge. Capacity is 1200mAh (4.44Wh), matching the stock specification.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEP-600 fit:\u003c\/strong\u003e\n    The EP-600 uses a compact 62.18 × 38.14 × 4.50mm cell with a 3.7V nominal rail. This replacement matches that footprint and voltage so the connector seats correctly and the charge IC sees the expected cell parameters.\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. The BMS held charge termination at the correct cutoff voltage and did not trigger premature protection events under steady load.\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 run one complete discharge-charge cycle at standard rate. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging begins on an uncalibrated cell.\u003c\/li\u003e\n  \u003c\/ul\u003e\n\n  \u003chr class=\"bpw-desc-divider\"\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eWhy the EP-600 reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe EP-600's fuel gauge IC stores a learned discharge curve from the original cell. When you fit a new cell, that stored curve no longer matches the actual chemistry. The gauge reads state-of-charge against old data, so percentages display incorrectly — often jumping or stalling at a fixed value. One full discharge down to automatic power-off, followed by a full uninterrupted charge, forces the coulomb counter to recalibrate against the replacement cell's actual curve.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the fuel gauge IC hasn't recalibrated yet and the cell voltage drops sharply under modem or screen load — faster than the uncalibrated gauge predicts. The phone hits the hardware undervoltage cutoff before the displayed percentage reaches zero. It is not a defective cell. Run two full discharge-charge cycles without fast charging, then confirm the cell voltage at shutdown reads at or above 3.4V using a battery monitoring app.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404130320474,"sku":"BWCS-BES140SL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404130353242,"sku":"BWCS-BES140SL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404130386010,"sku":"BWCS-BES140SL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-BES140SL-1.webp?v=1779369036","url":"https:\/\/batteryweb.com\/products\/evolveo-ep-600-replacement-battery-37v-1200mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}