Battery Life
A removable Li-Ion 1300 mAh battery powers the BLU Advance 4.0 L2, providing up to 700 hours of standby time on 2G and up to 500 hours on 3G. Talk time is rated up to 17 hours on 2G and up to 12 hours on 3G, which is admirable given the device's small battery capacity. This battery performance is typically sufficient for basic daily use, albeit requiring frequent charging for more active users.