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General Category => Magic Pie & Smart Pie Discussions => Topic started by: Morgen 3Eman on June 14, 2012, 06:12:15 PM

Title: Battery cut out at 43Volts. OK?
Post by: Morgen 3Eman on June 14, 2012, 06:12:15 PM

My LiFePo 48 V battery finally cut out at 43VDC.  Is this about normal?

The good thing is that I ran for several miles after my onboard volt meter indicated 48 VDC.  So I seem to have a pretty good indicator for range, as well as a little bit of reserve to get me home. 

I'll charge it today and then I'll see what kind of range it gives.

TTFN,
Dennis

Title: Re: Battery cut out at 43Volts. OK?
Post by: truly_bent on June 14, 2012, 07:43:23 PM

Good to know thanks. I haven't run mine out yet and i've been wondering when I could expect that. The presumption being that the BMS's in our packs are set for the same cutout voltage.

Title: Re: Battery cut out at 43Volts. OK?
Post by: skylinenitro on June 15, 2012, 06:10:57 PM

That sounds about right.  I ride Lead batts and it is horrendously slow and sluggish below 46 volts.  So when I get to 46 I always charge them back up.

I ran them down to 38 volts once, that was a bad idea.  The lights on the throttle stayed on but any attempt to use the throttle it would cut out right away.  After that ride I had a dead cell :(  btw I don't run a BMS on my bike, and I never let it get that low again.