DaveinOlyWA
Well-known member
mux said:Oilpan4 said:What causes the 40kwh batt to heat up so much?
We talking chademo use or does that also include the extended charging time on 6.6kw?
On *just* the 40kWh battery: anything seems to heat up the battery. Looking at it wrong is potentially bad. But all jokes aside - the Leaf 40kWh will heat up under any scenario - both driving and charging - but it'll heat up by far most during QC sessions. Using the 6.6kW charger shouldn't really heat it up much, maybe a degree here and there over many hours of charging.
That would depend on OAT. I normally see as much as 10º temp rise on a level 2 charge to full.
SageBrush said:.mux said:because the 40kWh battery is not very good.
Would a 30 kWh battery be a better choice for a swap ? I think there were more produced for the USA market than 40 kWh
Oh yes! Absolutely, the 30kWh battery is the best battery Nissan ever made. Doesn't rapidgate, QCs up to 80%+, reasonable rate of degradation if you charge to 80% and reasonable range for everyday use. That and the air-cooled 24kWh battery in the e-nv200, that one's surprisingly excellent as well. I've seen 100 000km+ e-nv200s with 90% SoH batteries. Same chemistry, but even the slightest hint of thermal management saves that battery long-term. Unfortunately that's not an option for the Leaf, it's a completely different form factor.
+1. I QC'd from 20% to 85% with pack starting at 115º F at full speed several times. Never saw a hint of a slowdown ever with one exception and since high heat was far from a possibility (first QC of the day on a 40º day) I chalked that one up to station issues.
I had nearly 300 QCs in 29,000 + miles and "practically" no degradation. 14 month LEAF Spy reading ahr; 82.05, SOH 100%. That pack was bulletproof.
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