{"product_id":"anycool-enjoy-w02-replacement-battery-37v-1000mah-li-ion","title":"Anycool Enjoy W02 Replacement Battery 3.7V 1000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eAnycool Enjoy W02 — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 1000mAh Li-ion cell for the Anycool Enjoy W02 smartphone. It replaces the original battery when capacity has dropped or the cell has failed entirely. Dimensions are 53.00 × 33.90 × 5.70mm — verify these against your existing cell before installing.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEnjoy W02 fit:\u003c\/strong\u003e\n    The W02 uses a compact removable cell on a standard 3.7V rail with a low-current BMS suited to its basic processor and modem load. This cell matches that voltage and physical footprint exactly.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled the cell through full charge and discharge under modem-active load. The BMS held voltage at the expected cutoff and accepted charge current without tripping into protection mode.\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 if available and run one complete discharge-charge cycle. This lets the fuel gauge IC map the new cell's actual discharge curve before it starts reporting percentages to the OS.\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 Enjoy W02 after a cell swap\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThe Enjoy W02's fuel gauge IC stores a charge curve calibrated to the old cell. A new cell has a different internal resistance profile, so the IC misjudges where the voltage cliff actually sits. Under screen or modem load, the cell voltage drops faster than the IC expects, and the phone cuts out before the displayed percentage reaches zero. One full discharge-charge cycle with no fast charging forces the coulomb counter to relearn the new cell's actual endpoints. After that cycle, shutdown behaviour should normalise.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone warm near the battery compartment during first charge\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eA new cell typically arrives with higher internal impedance than a used one that has been run in. The charge IC pushes current into that impedance, and some of it converts to heat. This is expected on the first one or two charge cycles and fades as the cell's impedance drops with use. If warmth persists past the third full charge or the phone becomes hot to the touch, stop charging and check that the cell is seated flat with no pressure on the connector pins. Normal surface temperature during charging should be below 40°C.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409498832986,"sku":"BWCS-NK5CMX-1","price":21.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409498865754,"sku":"BWCS-NK5CMX-2","price":24.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409498898522,"sku":"BWCS-NK5CMX-3","price":26.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK5CMX-1.webp?v=1779579814","url":"https:\/\/batteryweb.com\/products\/anycool-enjoy-w02-replacement-battery-37v-1000mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}