is it possable to build a 9v solar charger for a square battery?
I am fed up with constantly buying batterys while I am camping and so I bought a solar powered battery charger. the only problem is that it does not charger 9v cells. can any one recommend a way of constructing one.
At present, I have a 12V solar panel rated at 4.8w. that should suffice for power requirement. what I don't want is for the battery to be overcharged.
disregard Johann, he doesn't know that transformers work only on AC.
Probably voltage output is too low to charge a 9 volt battery.
You can buy another charger, or add a DC-DC converter to boost the 3 volts to 9 volts. Probably cheaper to get another charger.
10 POINTS IF YOU ANSWER THIS QUESTION!!!!! WILL A 12V SOLAR PANEL CHARGE A SEALED LEAD ACID BATTERY?
will a 12v solar panel (the ones used to charge caravan batteries) charge my 2.9Ah 12v Sealed lead acid battery?
as i was planning to buy a 12v solar panel from either maplins or Ebay
the best answer explaining why i can or cant do it will be awarded 10 points!
To fully charge a lead/acid battery, you would need a bit more than 12 Volt, usually 13.2 Volt.
Many Solar panels which are rated at nominal 12 Volt can deliver up to 14 Volt in direct sunshine, and at perfect angle to the sun.
So, the answer is, under ideal conditions, you can. Under less ideal conditions, the battery will not be charged to its fullest capacity.
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