{"product_id":"blu-studio-energy-replacement-battery-385v-5000mah-li-polymer","title":"BLU Studio Energy Replacement Battery 3.85V 5000mAh","description":"\u003cdiv class=\"bpw-desc\"\u003e\n  \u003ch2 class=\"bpw-desc-h2\"\u003eBLU Studio Energy \/ Studio Energy 2 — 3.85V Li-Polymer Replacement Battery\u003c\/h2\u003e\n\n  \u003cp class=\"bpw-desc-lead\"\u003eThis is a 3.85V, 5000mAh Li-Polymer replacement battery for the BLU Studio Energy (D810u) and Studio Energy 2 (S0090UU). It fits directly into BLU's large-capacity budget smartphone line where the original cell has degraded or lost charge retention. Capacity matches the factory spec at 5000mAh (19.25Wh).\u003c\/p\u003e\n\n  \u003cul class=\"bpw-desc-bullets\"\u003e\n    \u003cli\u003e\n\u003cstrong\u003eStudio Energy platform fit:\u003c\/strong\u003e\n    The D810u and S0090UU share the same battery bay dimensions and 3.85V supply rail. Both models use the same connector orientation and BMS handshake protocol, which is why this single cell covers the full Studio Energy lineup.\u003c\/li\u003e\n\n    \u003cli\u003e\n\u003cstrong\u003eBench tested on actual hardware:\u003c\/strong\u003e\n    We cycled this cell through charge and discharge on the Studio Energy platform. The BMS accepted the cell without fault codes, and the charge IC ramped current correctly from trickle to full charge without thermal cutoff events.\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 into an uncalibrated state.\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 replacement cell\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThis is a voltage cliff problem. Under modem activity or full-brightness screen load, the cell voltage drops sharply below the threshold the fuel gauge IC expects at that state of charge. The phone cuts out before the percentage hits zero. Run one full discharge-to-shutoff cycle, then charge uninterrupted to 100% — this gives the coulomb counter enough data to map the new cell's actual voltage curve. After that cycle, early shutoffs typically stop.\u003c\/p\u003e\n\n  \u003ch3 class=\"bpw-desc-h3\"\u003ePhone reports wrong battery percentage after cell swap\u003c\/h3\u003e\n  \u003cp class=\"bpw-desc-p\"\u003eThe fuel gauge IC stores a discharge curve calibrated to the old cell. A new cell with a different internal impedance will read as a different state of charge at the same voltage, causing the percentage to jump or stall. The fix is one full uninterrupted cycle — discharge until shutdown, then charge to 100% without interruption. After that, the coulomb counter resets its reference and percentage tracking stabilises.\u003c\/p\u003e\n\u003c\/div\u003e","brand":"BatteryWeb","offers":[{"title":"Warranty 1 Year","offer_id":43404196347994,"sku":"BWCS-GNV188SL-1","price":29.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 2 Year","offer_id":43404196380762,"sku":"BWCS-GNV188SL-2","price":33.99,"currency_code":"USD","in_stock":true},{"title":"Warranty 3 Year","offer_id":43404196413530,"sku":"BWCS-GNV188SL-3","price":36.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0674\/4775\/0746\/files\/BW-CS-GNV188SL-1.webp?v=1779369290","url":"https:\/\/batteryweb.com\/products\/blu-studio-energy-replacement-battery-385v-5000mah-li-polymer","provider":"BatteryWeb","version":"1.0","type":"link"}