VitaminJ wrote:Well I got the 5Ah LifePO4 that I posted. So far everything is as described. It came at 13.3v and the instructions said if it was above 13v it can be used right away.
Oh that is fantastic! Looks awesome, and I'm thinking of replacing mine with that now, too. When it comes time, that's probably exactly what I'll do
Leaf Spy showing 12v system voltages about the same as before and I will keep monitoring, especially while sitting on a CHAdeMO with all the accessories going (I believe CHAdeMO doesn't charge 12v at the same time).
Aha... but not.
time the HV battery is engaged, it's running the standard charge cycle, same as driving, L2 charging, L1 charging, preheating/cooling, quick charging... um, did I miss any? But yeah, it does the same charge cycle (14.4v down to 10 amps -> 13.0v) any time.
What I'd be concerned about is that the Leaf's DC-DC actually selects
a voltage, so if it goes to 14.4v, pumps charge in until it draws under 10 amps, then decreases to 13.0v, the lithium battery could begin supplying power to the car's systems (as the Leaf's DC-DC is only trying to run 13.0v, the now-higher 12v battery will begin discharging) until its
standing voltage goes below 13.0v. Lead batteries just *pff
* stop cold at 13.0v; their standing voltage is never over that but for a couple seconds after stopping a charge, thus that wouldn't be a problem with lead... but lithium is very linear. It could be doing a 80~100~80% sweep every time you start/drive/stop the car...
It'd be interesting to put a clamp meter on it and watch which way the power flows, and what the Leaf starts holding its voltage at...