TOYOTA 2010 Sienna - Manual (Page 474)

451
4-3. Do-it-yourself maintenance
4
Mainten
ance an
d ca
re
■
Before recharging
When recharging, the battery produces hydrogen gas which is flammable
and explosive. Therefore, before recharging:
●
If recharging with the battery installed on the vehicle, be sure to discon-
nect the ground cable.
●
Make sure the power switch on the charger is off when connecting and
disconnecting the charger cables to the battery.