DaveinOlyWA
Posts: 14819
Joined: Sat Apr 24, 2010 7:43 pm
Delivery Date: 16 Nov 2019
Leaf Number: 319862
Location: Olympia, WA
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Re: Thinking of buying a used 2014-2015 nissan leaf (need help)

Mon Jun 29, 2020 6:14 am

LeftieBiker wrote:
Sun Jun 28, 2020 9:07 pm
DaveinOlyWA wrote:
Sun Jun 28, 2020 6:56 pm
Get one that has double the most range you expect to drive and then NEVER NEVER NEVER charge it past 80% SOC.
That advice is a bit extreme. Charging to 100% right before starting a trip isn't going to cause measurable damage to the battery, especially in weather that isn't really Hot.
With "double the most range" there is NO reason to charge to 100%.

The only reason I said double was to discount winter explanations. He mentions what? 25 miles is longest trip he might take? He uses other options for anything greater. So sorry, no need to charge to full.
2011 SL; 44,598 mi, 87% SOH. 2013 S; 44,840 mi, 91% SOH. 2016 S30; 29,413 mi, 99% SOH. 2018 S; 25,185 mi, SOH 92.23%. 2019 S Plus; 10,081 mi, 95.03% SOH
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WetEV
Posts: 3748
Joined: Fri May 04, 2012 8:25 am
Delivery Date: 16 Feb 2014
Location: Near Seattle, WA

Re: Thinking of buying a used 2014-2015 nissan leaf (need help)

Mon Jun 29, 2020 7:37 am

DaveinOlyWA wrote:
Mon Jun 29, 2020 6:14 am
The only reason I said double was to discount winter explanations. He mentions what? 25 miles is longest trip he might take? He uses other options for anything greater. So sorry, no need to charge to full.
One reason to charge to full is to avoid discharge to near zero.

Like cash in the bank, having reserve range is always a good thing. If you plan on arriving home with 0% left, what if there is a detour? Or you have to go someplace right after getting home? Anything from a run to the grocery to an emergency.

Battery life will be better if discharges below 30% are avoided. On the flip side of this, leaving the battery fully charged especially when hot also decreases battery life. Staying in the center is best, and there is no ideal way to do this for everyone. So as a general plan with twice the range needed in summertime charge to perhaps 80%, and try to time charging to finish near departure time. In wintertime, charge to 100% if needed to avoid deep discharges. Worry a lot less about charging to 100% or leaving the car at 100%.

If winter is cold like the Yukon, you probably need a lot more than twice the summer range. For milder winters, twice summer range is probably OK.
WetEV
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Most everything around here is wet during the rainy season. And the rainy season is long.
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LeftieBiker
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Delivery Date: 30 Apr 2018
Location: Upstate New York, US

Re: Thinking of buying a used 2014-2015 nissan leaf (need help)

Mon Jun 29, 2020 12:51 pm

When you tell someone to "Never" do something, it's nice to have a good reason. "You don't have to" is not a very strong reason, especially when you have no way of knowing that the need will never arise. Charging to 100% for a short time does not measurably harm the battery, and as WetEV notes, it avoids too-deep discharges.
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