Copyright 2008 Michael Mc Grath POB 129 Hewitt,NJ 07421.
|
A view of cart #1. Close up of batteries. Note red electrical
tape on plus terminals and on plus parallel connecting cable. This is help
protect children, pets and dummies from grabbing the exposed terminals and
zapping themselves. Although i left some lead exposed so I can monitor voltage
with my Radio Crap (custom manufactured in China) pocket digital mutimeter. Deka
batteries are made in Pennsylvania which is right next door to the state of New
Jerky where I live. The specs for batteries are: part # BAU1 48RC 32 A.H. @ 20
hours 8.31" x 5.13" x 7.25". BCI group U1. Absorbed glass mat
technology sealed lead acid float type deep discharge constant charge/discharge.
Very important! Regular auto batteries are designed to put out maximum amps for
very short periods. They die quickly when deep discharged over and over again. I
picked these batteries because they were "designed" for solar
applications. They are readily available from most auto parts stores as golf
cart batteries. Dont tell anyone you want to use them in a solar system. they
might jack up the price! To increase discharge time I doubled up the batteries
in a parallel system. This maintains the 12 volts dc out but doubles the amps.
Of course it ALSO DOUBLES THE CHARGING TIME. Experts say to avoid draining
batteries to 10 volts. It is better to use the batteries to over 11 volts and
charge up. Generaly I run them down to 12 volts and recharge. Once in a while I
go down to 11 volts. Only once did I take them down to automatic shut down of
inverter. Fully charged system gets me 12 hours of 26 watts CF lighting and 15
watts of boom box music. I have a real nice Sony Boom box cd player with AM FM
radio. So I can listen to Hi fi stereo, none of that pitiful portable picnic box
scratchiness.