Morningstar 10 amp charge controller overcharging?

20 Posts
Jun 30, 2011 02:45 pm
Morningstar 10 amp charge controller overcharging?

I have been watching my voltages closely and I think my charge controller may be overcharging my battery.  I am seeing a voltage of 13.4-13.6 volts at the end of charging after the battery has been at rest for 4 hours.  Is the controller overcharging?
 
462 Posts
Jun 30, 2011 10:07 pm
Re: Morningstar 10 amp charge controller overcharging?

Nope, most 12 volt batteriew will charge up to 14 volts so 13 + is okay.
 
99 Posts
Jul 1, 2011 04:01 pm
Re: Morningstar 10 amp charge controller overcharging?

14 for regular charge, 15 for equalizing.  11 is about the bare minimum to discharge before causing damage.  So anywhere between 11+ and 13+ is the usual range to find it in.
 
20 Posts
Jul 4, 2011 04:10 am
Re: Morningstar 10 amp charge controller overcharging?

I feel like an idiot for not checking on multiple meters before posting this topic.

The cheap harbor freight meter I was using had a low battery in it.  This was causing it to give incorrect readings.  When I checked that meter against a known good meter I discovered the error.

I knew something was wrong when I started to see voltages in the 18 volt range on the battery during charging.

I am going to replace that multimeter with a standard panel type analog meter.
« Last Edit: Jul 4, 2011 04:12 am by Travis Austin »
 

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