Leaf dead - no power of any kind

LeftieBiker said:

donaldus said:

knightmb...since the Leaf doesn’t use the 12v battery to “crank”, what lithium ion, lithium iron phosphate battery would be a candidate to replace a 2018 SV’s 12v?

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A 12 volt AGM battery would work about as well, for half the cost or less.

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The Gen 2 haven't been around long enough yet for me to say "no more changing the battery every 3 years because the Leaf doesn't charge it properly" Of course, it's only because I haven't read anything about how the Gen 2 keeps the health of the Lead compared to the Gen 1. I'll look around since I am curious now...

knightmb said:

alozzy said:

Unless you are having a problem with your 12V supply, why change to a much more expensive lithium battery right now? Low voltage issues occur mostly with older LEAFs, it's unlikely that a 2018 like yours would have a worn out 12v lead acid battery already.

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It might be fixed in the Gen 2 models, but after having the reliable Lithium all those years and all the single digit temperatures it has worked through, why fix what isn't broken?
It's cleaner, no acid, smaller, lighter, etc. I leave my Bluetooth dongle plugged in 24/7/365 and never had a depleted battery in any cold morning. It has worked so well that I've changed most of my friends and relatives with Gen 1 to this battery (or one like it) if they wanted to front the cost and not worry about the Lead they have dying in a few years on a cold morning.

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I don't have to deal with super cold winters, so you've got a good point with that. If a lithium based battery, like the one you purchased, costs only $125 then that's comparable to the price of an AGM. One differentiator to consider is for those who use their LEAF as a backup power source via a 120V inverter. I would think that an AGM would be better for that.

I load tested, checked "settled" voltages somewhat extensively on my FLA battery in my 2102 Leaf. My best estimate is that for my conditions, the battery is kept at 40-60% SOC when not externally charged for a long period - very hard on an FLA type battery (sulfation).

Keep in mind that for a 1-2 amp "trickle" charger, to fully charge a 60% SOC, 60 ahr battery takes about 12-24 hours. My 2012 Leaf requires recharging every few weeks (the regen braking starts surging). I'm not sure how representative the Leaf Spy voltage readings are - if being used for an indication of battery SOC/condition as voltages vary so much with charging and discharging rates.

Anyone done a similar check of SOC monitering via "settled" voltages?