Battery 12,8 Ah (genuine Panasonic)
Fits only X8 Sonic.
It comes complete with case, so it's ready-to-go after full charging.
Battery 6,4 Ah (genuine Panasonic)
Fits only X7 Sonic.
It comes with original case ready-to-go after proper 100% charging.
Electronic Controller (for X7 Sonic)
Works only for X7 Sonic.
It comes with cables and plug-in ready to install.
Electronic Controller (for X8 Sonic)
Works only for X8 Sonic.
Works for both X7 Sonic and X8 Sonic.
It comes with integrated buttons and redy-to-go cables
Electric brushless Engine 350 W
It comes with complete wheel (rim+tyre+inner tube) and cabling, ready to install and go.