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You have to let the battery cool before charging it? Can't the charger just wait until the battery is cool? That kind of inconvenience would be a deal breaker f

by nsxwolf 13y ago

You have to let the battery cool before charging it? Can't the charger just wait until the battery is cool? That kind of inconvenience would be a deal breaker for me. I'd make a mental note to go back into the garage in an hour, but ultimately I'd forget to charge it.

koblenski 13y ago
No, you can set the battery charge timer that's part of the car UI so that it charges at a specific time after you know it will be cool. Having said that, I used to charge immediately after driving, and it didn't cause any problems. Nissan just recommends it if you want to marginally improve your battery life, so I set my timer a half hour later.
- HeyLaughingBoy 13y ago
  That's ridiculous; the charger should be smart enough to not attempt to charge the battery if it's too hot. Even some old NiCd and NiMh chargers had that functionality. At the very least it should inhibit the charge and offer you the opportunity to override that.
  - koblenski 13y ago
    The on-board charger is that smart. If you're charging off of a 440V quick charger and the battery gets too hot, it will shut off, and the car will send you an email telling you what happened if you've added an email address in the car's settings. In other cases with a 110V or 220V charger, it's highly unlikely that the battery will ever be too hot to charge unless it's 120F outside and you've been pushing the car hard. Look, it really is a minor issue that never crossed my mind until I came across the recommendation in the manual recently. It probably will impact the battery's life only slightly, but it's easy to change the timer and start charging a bit later. It's certainly true that any heat a battery sees will contribute to its degradation, especially while charging because that also generates heat. I figured I'd pass along the recommendation as an additional way to take good care of the very expensive battery.
  - Symmetry 13y ago
    The charger can't distinguish a user who wants their car available as soon as reasonable from one who is done with their car for the night and is happy to wait an extra half hour for a tiny increase in battery life.
    - HeyLaughingBoy 13y ago
      Hence the reason you allow for an override.
ssmoot 13y ago
I don't ever do that. But mine's a lease, so I don't really care about the battery. I charge to 100% daily, and wasn't even aware of any "cool down" recommendation. Not that it'd matter with 95F evenings anyways.

by nsxwolf 13y ago

koblenski 13y ago

No, you can set the battery charge timer that's part of the car UI so that it charges at a specific time after you know it will be cool. Having said that, I used to charge immediately after driving, and it didn't cause any problems. Nissan just recommends it if you want to marginally improve your battery life, so I set my timer a half hour later.

HeyLaughingBoy 13y ago
That's ridiculous; the charger should be smart enough to not attempt to charge the battery if it's too hot. Even some old NiCd and NiMh chargers had that functionality. At the very least it should inhibit the charge and offer you the opportunity to override that.
- koblenski 13y ago
  The on-board charger is that smart. If you're charging off of a 440V quick charger and the battery gets too hot, it will shut off, and the car will send you an email telling you what happened if you've added an email address in the car's settings. In other cases with a 110V or 220V charger, it's highly unlikely that the battery will ever be too hot to charge unless it's 120F outside and you've been pushing the car hard. Look, it really is a minor issue that never crossed my mind until I came across the recommendation in the manual recently. It probably will impact the battery's life only slightly, but it's easy to change the timer and start charging a bit later. It's certainly true that any heat a battery sees will contribute to its degradation, especially while charging because that also generates heat. I figured I'd pass along the recommendation as an additional way to take good care of the very expensive battery.
- Symmetry 13y ago
  The charger can't distinguish a user who wants their car available as soon as reasonable from one who is done with their car for the night and is happy to wait an extra half hour for a tiny increase in battery life.
  - HeyLaughingBoy 13y ago
    Hence the reason you allow for an override.

ssmoot 13y ago

I don't ever do that. But mine's a lease, so I don't really care about the battery. I charge to 100% daily, and wasn't even aware of any "cool down" recommendation. Not that it'd matter with 95F evenings anyways.