240V-32A Charger Recommendation Needed

[Rajiv Vaidyanathan]

how long does it take to charge the clarity from dead at this? I was looking at that exact charger but wasn't sure if I should go 16amp or 32.

With my 32A charger, I'm guessing it will be about 2.5 hours to full from dead. I haven't really run it low enough to check, but that's a good guess.

- Rajiv

 

[brentac]

that's the advertised rate for the 32A. but I was specifically wondering about 16 (I didn't know if it's something where you just double the time since it's half the amps.)

 

[Viking79]

It will probably be slightly less than twice as long. Lower currents will have less power lost as heat, efficiency will be slightly higher at 16 A, but will take longer and preheating won't work as well.

 

[brentac]

thank you. we are getting a 32 installed (hardwired) that my wife will primarily use on her Leaf. It will reach my clarity so I'll use it some, but we are also getting an outlet installed incase we decide we want a second charger (and a removable one in this case.) If you're estimate is right, so say it's 5-6 hours that would work. I've had a few times where the battery was dead and I didn't have the full 12 hours it needed to charge. but 5-6 is easy. Thanks

 

[KentuckyKen]

how long does it take to charge the clarity from dead at this? I was looking at that exact charger but wasn't sure if I should go 16amp or 32.

Go with the 32 amp EVSE. My experience and all the posts here say it will take 2hr 5m to 2hr 15m for a full charge starting with a fully depleted battery. (Printed sources say 2 1/2 hrs). The 16 amp will take approx twice as long (say 5 hr). The 12 amp 120v Charger included w car takes about 12 hr.
32 amp EVSE also makes it a lot easier to get a quick partial charge when you’re at home for a short time and need to go back out.

 

[Kendalf]

It will probably be slightly less than twice as long. Lower currents will have less power lost as heat, efficiency will be slightly higher at 16 A, but will take longer and preheating won't work as well.

I have my OpenEVSE set at the lowest 10A setting for the efficiency reason. It takes about 4.5 hours to regain 8.5kWh of charge, which is my average daily consumption. Since I'm charging overnight the additional time is not an issue.