Aftermarket Camcorder Batteries Can I Use 7.4 Volt Aftermarket Camcorder Battery Instead Of OEM 7.2 Volt One?

Can I use 7.4 volt aftermarket camcorder battery instead of OEM 7.2 volt one? - aftermarket camcorder batteries

This is for the JVC Everio GZ-MG77u hard drive camcorders. Many sites claim to sell aftermarket batteries 7.4 V, it is compatible with 7.2 V. But I saw the comments, the users claim that it does not work. Who to believe?