Solar Questions
I am trying to figure out what I need to recharge a battery in an average 8 hours of sunlight per day with a maximum load of 2.52 amps. This is an exercise in building a system which hopefully will...
Forum Discussion
Ok 30AH a day so how many days do you want to go keeping the lights on if the sun doesn't come out for a few days? That is your battery bank reserve needed. So you really want more battery than you are thinking for replacing the daily AH every day.
If you are home I suppose you could always throw a simple battery charger on it from household 120 power if there is not enough solar. so you want to cover for when you are not there.
I think at least one 100AH AGM might be a good solution. You can go below 50% with those which gives you more margin. Say that gives you two days without any sun and you are at 40%
A single 100w panel gives you 6.2a mid day. You aren't going to get 5 hours a day at 6.2 amps though to get your 30AH. Most of the day it is under 4 amps. You might be looking at 200w worth of panels, I haven't done the math --don't know the annual insolation for there.
This is getting out of hand for a few garden lights? :) Maybe forget the solar and just put one battery on the job with a trickle charger on it from the house. But that's no fun.
If you are home I suppose you could always throw a simple battery charger on it from household 120 power if there is not enough solar. so you want to cover for when you are not there.
I think at least one 100AH AGM might be a good solution. You can go below 50% with those which gives you more margin. Say that gives you two days without any sun and you are at 40%
A single 100w panel gives you 6.2a mid day. You aren't going to get 5 hours a day at 6.2 amps though to get your 30AH. Most of the day it is under 4 amps. You might be looking at 200w worth of panels, I haven't done the math --don't know the annual insolation for there.
This is getting out of hand for a few garden lights? :) Maybe forget the solar and just put one battery on the job with a trickle charger on it from the house. But that's no fun.
