Re: (ET) batteries

["Nick Skinner" <kc2dzb nycap rr com>]

There are a couple of possibilities I haven't seen mentioned yet. If this
was a Landis Controller, it is possible that (A) the power disconnect was
not engaged, (B) the control panel mounted circuit breaker popped open,
and/or (C) there was a charger component failure (i.e., diodes or
capacitor). 

Any single or combination of these items would lead to an undercharged 
pack.
B and/or C would explain why subsequent attempts to charge the battery pack
would fail. Hydrometer readings from the batteries would be very helpful in
determining what is going on, as would a charger voltage measurement.

Nick

-----Original Message-----
From: Jim Coate [mailto:lists freerangeelectric com] 
Sent: Thursday, April 24, 2014 11:20 AM
To: elec-trak cosmos phy tufts edu
Subject: Re: (ET) batteries

What type of charge controller were you using? As others have said, likely
to have overcharged the batteries to the point of no return, but... I'd
check the voltage of each battery. Preferably under modest load like the
mowing deck running. Looking to see if 5 batteries are good, holding around
6 volts, and one battery is the stinker and plummets to near zero volts.
This could mean that the one battery died more of its own accord and the
charge controller didn't toast the whole pack.

On 4/23/14 9:59 AM, Ferguson Apiaries wrote:
> I left my tractor plugged in to a charge controller all winter to keep 
> up the charge and now I have very little capacity in the batteries. I 
> can get about 5 mins. running time. Is there anything I can do to 
> revive them?


--
Jim Coate
Free Range Electric
www.ElectricTractorStore.com

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