Neil P said:
2/20 on this charger that is automatic says: it will start out at 20 amps and trickle down to
2 amps to float and turn on/off to maintain the battery.
Well, if it really does turn off and is an automatic battery charger,
then it should work just fine.
I have recalculated my use for power outage, and all I need is 11amps/hr. I have my eye on a
12V 115 amp/hr deep cycle battery. 50% of that conservatively is say: 50 a/hr. At 11 amp/hr
need, I can run for approx.: 4 hrs and only discharge the battery to 50% or more.
You are having a little confusion with your units, amp-hours is a
quantity, and amps is a rate of flow, but if I understand that you
only need 11 amps for 4 hours then that should be fine.
Based on this would a 10 amp charger be fine and the 1.5 amp float charger to maintain the
battery year round?
Well, you have to decide what you want your recharge time to be (if
this is for the occasional blackout then a week to recharge won't
bother you). Is the 10 amp charger automatic? [I really wouldn't
reccomend a non-automatic charger, as you _will_ forget and leave it
on too long.]
The 1.5-amp float charger looks OK, but if they 2/20 charger
referenced above is properly sized for your battery and really does
turn off when the battery is charged, then it should be OK. Check the
voltage and electrolyte level regularly until you know what your
maintenance interval should be.