{"product_id":"digma-e601hd-replacement-battery-37v-1500mah-li-ion","title":"Digma E601hd Replacement Battery 3.7V 1500mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eDigma E601hd — 3.7V Li-ion Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V 1500mAh Li-ion cell for the Digma E601hd smartphone. It replaces the original battery when the existing cell can no longer hold a usable charge. Dimensions are 65.80 × 43.90 × 5.10mm — confirm these against your existing battery before fitting.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eE601hd platform fit:\u003c\/strong\u003e\n    The E601hd uses a standard 3.7V single-cell Li-ion architecture with a direct connector to the charge IC. This replacement matches that voltage rail and physical footprint so the charge IC sees a compatible cell from the first power-on.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran charge and discharge cycles through the BMS at 3.7V nominal and confirmed the protection circuit trips correctly at the low-voltage cutoff. The cell accepted charge without fault flags on the first cycle.\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 for one complete discharge-charge cycle. This lets the fuel gauge IC recalibrate against the new cell's discharge curve before high-current charging pushes current into 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 E601hd reports wrong battery percentage after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe E601hd uses a fuel gauge IC that builds a discharge model over multiple charge cycles. When you fit a new cell, the IC is still referencing the old cell's curve, which causes the percentage display to drift from the real state of charge. This is not a fault with the replacement cell — it is the IC catching up to the new cell's actual capacity. Run one full discharge down to auto-shutdown, then charge uninterrupted to 100% to reset the coulomb counter baseline.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eSudden shutdown at 20–30% on the new cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis happens when the modem or screen pulls a current spike and the cell voltage drops below the BMS cutoff threshold before the fuel gauge registers it. The gauge shows 25% but the cell cannot sustain voltage under that instantaneous load. It is more common in the first few cycles before the fuel gauge IC has a calibrated curve for the new cell. After two or three full cycles the gauge tracks the actual voltage cliff accurately and premature shutdowns stop.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43409491689562,"sku":"BWCS-NK4LSL-1","price":22.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43409491722330,"sku":"BWCS-NK4LSL-2","price":25.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43409491755098,"sku":"BWCS-NK4LSL-3","price":27.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK4LSL-1.webp?v=1778611065","url":"https:\/\/batteryweb.com\/products\/digma-e601hd-replacement-battery-37v-1500mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}