Toshiba Satellite M40 Battery are made from a grade cells and highest quality parts, the Toshiba laptop battery are tailored made according to the original size, whether the battery appearance, size and quality are the same as with the original. Every Toshiba Satellite M40 laptop battery should be under strict quality control including filtration and safety testing of voltage,capacity and battery core before leaving the factory, and has passed the authentication of CE, UL, EMC, CQC,ROHS, etc.
seems to work the same or better than the original did when new...great price.
Worked OK. For some reason the laptop does not talk to the battery so cannot tell the charge level but it works, that is, charges and discharges ok.