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Model 3 owners -- what's your overnight home number?

Mine tops off from ~40% to 90% overnight on the 240V setup. Roughly 7 hours plugged in, though I'm never actually watching. My buddy has the same car and says his takes noticeably longer, and we can't figure out why. Same year, same trim, both on 240V home setups. I'm suspicious it's his charger amperage (he's on a 30A circuit, mine is 50A) but he swears the app says the same rate as mine. Curious what everyone else actually sees at home. Especially if you can tell me your circuit amperage -- trying to figure out if my friend has a real problem or if we're both fine and imagining a discrepancy.
72 answers
2 ANSWERS
sgarber
@sgarberOctober 02, 2026
30A circuit means 24A max to the car. 50A is 40A. His should be slower, that's just math.
gpetersen
@gpetersenOctober 02, 2026
The app number is probably where the confusion is. It shows miles per hour added, and that moves around a lot depending on battery temp and what the car thinks its efficiency is... it's not a great way to compare two cars. Look at the amps and voltage on the charging screen in the car while it's actually charging. If his says 24A and yours says 32A or higher, there's your answer. Also depends on which Model 3. The RWD/SR cars top out at 32A onboard regardless of what you feed them, so if you're on a 50A circuit you're getting 32A not 40A. Also 7 hours for 40 to 90 sounds long for a 50A circuit to be honest. Are you sure it isn't scheduled to start later?