{"product_id":"mobistel-el530-replacement-battery-37v-950mah-li-ion","title":"BTY26174 Mobistel EL530 Replacement Battery 3.7V 950mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eMobistel EL530 \/ EL530 Dual — 3.7V Li-ion Replacement Battery (BTY26174)\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.7V, 950mAh (3.52Wh) Li-ion cell replacing the original BTY26174 in the Mobistel EL530 and EL530 Dual smartphones. It fits both single-SIM and dual-SIM variants of the EL530 — same footprint at 59.87 × 38.05 × 4.40mm, same connector orientation. Swap it when the original cell can no longer hold a charge through a normal day of calls and messaging.\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eEL530 and EL530 Dual compatibility:\u003c\/strong\u003e\n    Both variants use the same battery bay dimensions and the same BTY26174 cell. The dual-SIM model draws slightly more standby current due to the second radio, but the battery connector, BMS handshake, and physical slot are identical across both.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We ran this cell through charge and discharge cycles on the EL530 platform and confirmed the BMS communicates correctly with the phone's charge IC — no false full readings at the top of charge, no premature cutoff during discharge.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eFuel gauge recalibration on first use:\u003c\/strong\u003e\n    After fitting this cell, disable any fast-charge adapter for the first full discharge-to-charge cycle. This lets the fuel gauge IC map the new cell's discharge curve before high-current charging pushes current into an uncalibrated coulomb counter — which is what causes erratic percentage readings early on.\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 EL530 after a cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe EL530's fuel gauge IC stores a discharge curve from the original cell. When a new cell goes in, that stored curve no longer matches the actual voltage-versus-capacity relationship of the replacement. The phone reads 25% state-of-charge but the cell is already at or below the modem load threshold — around 3.5V under GSM transmission burst — and the hardware cuts power to protect the new cell. One complete slow-charge cycle forces the IC to relearn the new curve and resolves the cliff. Charge to 100% with a standard 5V\/1A adapter, then allow the phone to discharge naturally to auto-shutdown before recharging.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003eEL530 not powering on after the replacement battery sat in storage\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eLi-ion cells shipped or stored without charge can drop below 3.0V per cell, which triggers the BMS into lockout mode — a protective state that blocks normal charge current to prevent damage to a deeply discharged cell. The phone shows no charging indicator and will not boot. Connect the phone to a 5V USB charger and leave it completely undisturbed for 20–30 minutes — most BMS circuits include a trickle-recovery path at around 50–100mA that slowly raises cell voltage back above the 3.0V re-enable threshold. Once the charging LED activates, normal charging has resumed.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404324241498,"sku":"BWCS-MEL530SL-1","price":27.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 2 Year","offer_id":43404324274266,"sku":"BWCS-MEL530SL-2","price":31.99,"currency_code":"USD","in_stock":false},{"title":"Warranty 3 Year","offer_id":43404324307034,"sku":"BWCS-MEL530SL-3","price":33.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-MEL530SL-1.webp?v=1779369762","url":"https:\/\/batteryweb.com\/products\/mobistel-el530-replacement-battery-37v-950mah-li-ion","provider":"BatteryWeb","version":"1.0","type":"link"}