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Old 03-03-2013, 03:21 PM   #300
JoelWisman OP
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Joined: Apr 2009
Location: STL, MO, USA
Oddometer: 1,392
Alright, Just finishing some load tests on all sizes of Antigravity from 4 cell through 20 as well as the ETX18 and 24 earthX. Also been playing with a lab freezer so I can freeze batteries down to whatever specific temperature desired and as always a lead/acid battery thrown into the mix for perspective.

Other then time, any other tests anyone can think of to differentiate these very different batteries? All of them are blowing the doors off of Shorai but I'm having difficulty figuring out how to simulate durability beyond the acid test of seeing what failure rates are in a few years.

FYI until I can get videos and graphs up know that two things are obvious. earthX can really put out a lot of current for it's AH above and beyond any other battery I have tested to date and also it self heats and ramps up current output quicker then any other LiFePO4 battery I have tested to date.

_cy_ I have tested the balance and AH capacity of every battery I have tested to date down to the individual cell and both at low rates and high rates to get at the pekurret, or however you spell that word and found that despite a great body of writing on the web to the contrary, LiFePO4 exhibits a considerable pekurette, meaning the AH out is heavily dependent on the rate of discharge.

So, thoughts anyone? What can we do to get at which of these battery qualities are best before finding out the hard way???
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