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Discussion Starter · #1 ·
We have a Grizzl-E Level 2 charger on our house and charge the Jeep outside here in New England. I used to see the Jeep charge within 3 or so hours when it was warmer. But now that it’s 15-40 degrees out the charger only performs at a level 1 rate (12-13 hours a charge). The Jeep doesn’t show me the level 1 vs level 2 charge times on the dash, so I assume it knows it’s receiving the most power it can from the charger? Curious if this is normal winter behavior that others are experiencing or if it’s a charger issue. We don’t have many public chargers to test with (they are always in use at the shopping centers…)
 

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That is bizarre. I have not heard of such a thing. May be worth double checking the dip switches, although not sure how they could change.
 

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2021 Rubicon 4xe
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We have a Grizzl-E Level 2 charger on our house and charge the Jeep outside here in New England. I used to see the Jeep charge within 3 or so hours when it was warmer. But now that it’s 15-40 degrees out the charger only performs at a level 1 rate (12-13 hours a charge). The Jeep doesn’t show me the level 1 vs level 2 charge times on the dash, so I assume it knows it’s receiving the most power it can from the charger? Curious if this is normal winter behavior that others are experiencing or if it’s a charger issue. We don’t have many public chargers to test with (they are always in use at the shopping centers…)
I don’t think that should be the case. Should charge as LVL 2.

EDIT: I guess I’m wrong.😐
 

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EDIT: I guess I’m wrong
They're talking about DC fast charging there, but it's also not nearly as much of a drop as we are talking about here. I've heard of level 1 charging taking an extra hour or so when it's really cold, but not a 6-7x drop.
 

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They're talking about DC fast charging there, but it's also not nearly as much of a drop as we are talking about here. I've heard of level 1 charging taking an extra hour or so when it's really cold, but not a 6-7x drop.
Yeah, that seems excessive.
 

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I have a Grizzl-E in my garage and I see no difference in performance. It is really cold here, 2* outside about 10-12* in my garage. I saw no impact to my charge time.
 

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Discussion Starter · #8 ·
Thanks for all the responses, looks like I have some investigating to do. Today I’ll try and make it to a public charger and see how the Jeep performs there too, only a high of 18F today
 

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We have a Grizzl-E Level 2 charger on our house and charge the Jeep outside here in New England. I used to see the Jeep charge within 3 or so hours when it was warmer. But now that it’s 15-40 degrees out the charger only performs at a level 1 rate (12-13 hours a charge). The Jeep doesn’t show me the level 1 vs level 2 charge times on the dash, so I assume it knows it’s receiving the most power it can from the charger? Curious if this is normal winter behavior that others are experiencing or if it’s a charger issue. We don’t have many public chargers to test with (they are always in use at the shopping centers…)
It depends on the programming. The charger for L1 and L2 is in the car and controlled by a computer. It can request different charge levels. Usually the first few minutes are ramping up to a steady rate and then as the battery gets close to 100% (usable) then it tapers off.

If the HVB is very cold, then it can't charge as fast so the computer will likely request a slower speed until it warms up.
 

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Discussion Starter · #10 ·
It depends on the programming. The charger for L1 and L2 is in the car and controlled by a computer. It can request different charge levels. Usually the first few minutes are ramping up to a steady rate and then as the battery gets close to 100% (usable) then it tapers off.

If the HVB is very cold, then it can't charge as fast so the computer will likely request a slower speed until it warms up.
Looks to be an issue with the charger itself… took it to a public charger and it told me 20 mins to charge. Drove home and the battery went down 5% but my home charger tells me 3 hours to charge. Something ain’t right, luckily it’s still within the realm of returns

checked the dip switches inside too and even put them to 32 and back… no change
 

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Discussion Starter · #11 ·
My Level 2 connectors in my garage also charge at full rate - once the batteries are up to temp - regardless of outside temps.
Yeah looks to be an issue with my charger. Got the Jeep up to temp and by the end of my errands I could put it in all electric mode and it’s only 7 degrees out here. Public charger it charged quickly but back home it wants to go at a snails pace… I’ve ordered a replacement charger so when that new one comes I’ll update what I find
 
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