Despite the bidder is compatible with original battery PA3817U-1BRS, from the connection, the PC is Off and no lights at all even after connecting the outlet: apparently it is sometimes possible depending on the Toshiba models ( despite the Bios update on Toshiba.fr) Bravo to SAV ANKER who contacted me by email several times and even sent me a second battery for free to test again: Excellent tracking product! Are very serious at Anker: Seller recommend without reservation. thank you to Amazon for its free article return policy (with full refund the next day)