In 2019 I purchased a 2020 Prius Prime after Strata Council OKed me to use a 110V outlet beside my (secure) underground parking spot, as a charging station. Here's how I did it:
I agreed to keep the charge rate to 8amps to avoid overheating/overloading the circuit. I purchased a simple 'kilowatt' meter for $12, and I keep that plugged into the outlet, and plug my Level 1 charger into the meter and I keep the meter and charger permanently in place. I informed my parking neighbours to simply unplug the meter if they need access to the 110v plugs. Strata reads the meter quarterly and bills me for power consumed at their charged rate (~10cents/kwh).
Obviously there's some degree of an honour system here but, over time, the quarterly billing is quite consistent, and we're not talking big bucks when charging at 8amps/110v.
I kept the same setup for my 2022 M3 RWD, and I get about 1.3% charge/hour at 110v/8 amps which is enough to cover most of my daily driving and if I need more I'll make a quick stop at a Level 2 charger or a local DCFC. There seems to be about a 200w overhead in the M3 AC charging system, so 880w results in about 700w/hr into the battery.
I agreed to keep the charge rate to 8amps to avoid overheating/overloading the circuit. I purchased a simple 'kilowatt' meter for $12, and I keep that plugged into the outlet, and plug my Level 1 charger into the meter and I keep the meter and charger permanently in place. I informed my parking neighbours to simply unplug the meter if they need access to the 110v plugs. Strata reads the meter quarterly and bills me for power consumed at their charged rate (~10cents/kwh).
Obviously there's some degree of an honour system here but, over time, the quarterly billing is quite consistent, and we're not talking big bucks when charging at 8amps/110v.
I kept the same setup for my 2022 M3 RWD, and I get about 1.3% charge/hour at 110v/8 amps which is enough to cover most of my daily driving and if I need more I'll make a quick stop at a Level 2 charger or a local DCFC. There seems to be about a 200w overhead in the M3 AC charging system, so 880w results in about 700w/hr into the battery.
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