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Old 09-03-2014, 09:01 PM   #12 (permalink)
The brake pedal is evil
Join Date: Jan 2013
Location: California__ Awsome: Yes
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Denny's Detector - '08 Mercury Grand Marquis

Taserface - '17 Chevy Volt
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Good. NiMH hates overcharge, it is the reason that despite the fact that it won't kill the battery immedity you have to treat it like a Li-ion cell: keep it moderately charged (over and undercharge hurts NiMh,) cool, and have a charger that knows when to terminate charging based on state of charge (and to know where 100% SOC is you need a monitoring wire running to every single cell or over time the cells will become so poorly matched that you can't find the voltage depression that indicates a NiMH cell is full due to varying rates of self discharge.)

Gah. I remembered why I like sayno eneloops: they are insanely rugged for a NiMH cell in terms of electrical (a 120S2P pack made out of AA cells would likely handle the current draw of the IMA system (what? 20 amps tops?) but only cost $500 if you bought in bulk, not self discharge, and I think a 120S4P would match the stock IMA pack in capacity) and thermal tolerances (150 degree temperatures won't kill them.)
Getting sensor data off of a pre OBDII Toyota ECU via TDCL.
All of this is on E10: Project E is my current focus.

Last edited by H-Man; 09-03-2014 at 09:09 PM..
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