Yeah, they didn't implement a proper temp-compensated 3-stage, but I remember the float being 13.5v? (measured at the battery) Am I wrong?
On Sat, Aug 1, 2026 at 11:16 PM Cor van de Water <[email protected]> wrote: > Phil, > Sorry but I got to correct you there, the Leaf will *charge* the aux > battery for a short time after starting the vehicle, whether driving > or charging (when contactors are closed, as you write), HOWEVER, as > soon as the charge current drops below 10 Amps and on an older battery > that is almost instantly, the DC/DC stops charging it and switches to > a maintenance voltage which will essentially NOT charge the 12V > battery any further. If I am not mistaken, the charge voltage is 14V > and the maintenance voltage is at or below 13V which means that almost > no current is absorbed by the aux battery, which is what you WANT for > a fully charged battery, but since an older battery can be almost > empty but due to not accepting 10 Amps of current at 14V, it will get > 13V and stay essentially empty the whole time, that is why Leaf > batteries die early. They never properly get charged, let alone > balanced (occasionally overcharged to re-balance the 6 cells) by the > car. > >
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