PowerWalker VFI 3000 TGBThe PowerWalker VFI 1000-10000 TG/TGB/TGS offer a professional solution for home and office environment. They are available with different designs:- TG: With internal battery; ranges from 1000-3000VA- TGB: With internal battery and battery connector for external battery packs; ranges from 1000-10000VA- TGS: Without internal batteries, but with a strong charger and battery connector; ranges from 1000-10000VAThe VFI TG/TGB/TGS series are detected as Human Interface Device (HID) Power Device by the internal O/S drivers and can be managed without additio