{"product_id":"nokia-lumia-625-replacement-battery-37v-2000mah-li-polymer","title":"BP-4GWA Nokia Lumia 625 Compatible Battery 3.7V 2000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eNokia Lumia 625 \/ Lumia 720 Series — 3.7V Li-Polymer Replacement Battery (BP-4GWA)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 2000mAh Li-Polymer replacement cell for the Nokia Lumia 625, Lumia 625H, Lumia 720, and Lumia 720T. It slots directly into the original battery bay and connects to the same three-contact interface the phone's charge IC expects. Capacity is 2000mAh at 7.4Wh — matching the OEM BP-4GWA spec.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eLumia 625 and 720 platform compatibility:\u003c\/strong\u003e\n    Both handsets share the BP-4GWA footprint, contact layout, and 3.7V nominal rail. The BMS handshake on this cell matches the NTC thermistor line Nokia's charge IC polls during each charge cycle — no negotiation errors on either model.\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 a Lumia 720 unit. The BMS held cutoff at 4.2V on the high end and triggered protection correctly at the low-voltage threshold without triggering spurious over-current trips under screen-on load.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first cycle:\u003c\/strong\u003e\n    On first use after installation, run one complete discharge to near-empty before recharging to 100%. The Lumia's coulomb counter calibrates its percentage model against the new cell's actual discharge curve during this first full pass — skipping it causes the OS to display inaccurate readings for several days.\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 Lumia 625 and 720\u003c\/h3\u003e\n\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage-cliff failure, not a capacity failure. When the modem fires during a call or LTE data burst, it draws a short high-current pulse. An aged or new-but-uncalibrated cell can drop below the phone's minimum voltage threshold under that load even though the fuel gauge still shows charge remaining. The phone shuts down to protect the SoC — the percentage reading was simply wrong. Running one full discharge-charge cycle lets the coulomb counter map the real voltage-capacity curve of the new cell, which eliminates most cliff shutdowns.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone won't power on after sitting in a drawer for months\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-Polymer cells self-discharge in storage. If the cell drops below roughly 2.5V, the BMS trips its deep-discharge lockout and the phone will not respond to a normal charger. Plug it into a wall charger — not a PC USB port — and leave it connected for at least 30 minutes without pressing the power button. The charge IC will trickle current into the cell to bring it above the BMS re-enable threshold, after which normal charging resumes. If the phone still shows no sign of life after 45 minutes on a wall charger, check that the charger output is at least 5V 1A.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404291637338,"sku":"BWCS-NK720XL-1","price":26.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404291670106,"sku":"BWCS-NK720XL-2","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404291702874,"sku":"BWCS-NK720XL-3","price":32.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-NK720XL-1.webp?v=1779369657","url":"https:\/\/batteryweb.com\/products\/nokia-lumia-625-replacement-battery-37v-2000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}