Welcome to the Forum and yes the 110 chargers get hot they really need a dedicated outlet and not one that uses a GFI and if you use an extension cord it has to be a heavy duty one not one of those $19.95 ones. Go to www.clippercreek.com and look into a level 2 charger they cost around $525.00 those use 220V it's the only way to go . Faster charging cleaner charging I find the Karma likes the 220 charger more then the 110 lol .