Gary Krysztopik wrote:
I have six kits that have eight relays per board. Three are assembled in
one AL box, the other three are still in kit form (circuit board and parts,
need to be soldered). I used these for a lead acid pack of 24 X 12 V. The
box has a DVM and selector switches so that each battery could be monitored
and charged manually. The Bat Bal is designed to go with the Bat Mon for
automated operation. I used this on my trike and was saving it for a home
battery backup system with solar but we are moving. It has the upgraded
Potter Brumfield relays which are rated for 20A at 28VDC.
I can provide more detail and pictures. I'd like to get some of my $700+
back but I will take best offer. I see the relays on ebay for $15 each
which comes out to $720 just for the relays.
That's a great start on a Battery Balancer system. You can either use it
manually as Gary did, or add the Control board to automate it. These are
240v 30amp relays, so you can monitor, charge, discharge, or balance any
battery or cell at up to 30 amps with this setup.
My current prices for these relay boards are $149 kit, or $195
assembled, so Gary's $700 is a big savings.
If someone wants the rest of the Balancer, you can build it yourself
from the documentation at http://www3.telus.net/nook/balancerland/. Or,
I have bare boards, kits, and assembled boards available for the current
version (which works with Gary's boards). See
http://www.sunrise-ev.com/Balancer.htm for details.
--
Humanity is acquiring all the right technology for all the wrong
reasons. -- R. Buckminster Fuller
--
Lee A. Hart, http://www.sunrise-ev.com/LeesEVs.htm
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