Dell Inspiron 15 5577 replacement battery from United Kingdom(74Wh,6 cells) | BatteryBuy.co.uk
My Dell inpiration 5577 always suddenly shut down like suddenly out of electric(but my battery is fine i think),and after that, i turn on the laptop,it would shutdown again and startup ,then
Battery 357F9 for Dell Notebooks, capacity 6666mAh
Dell Inspiron 15 5577 P57F disassembly – Inside my laptop