9v Solar Charger

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...

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.

2008-06-11 02:16:56 by tsmoreland324

You can use "SOLAR i9005" battery either to power up your devices under the sunshine directly, or you can also use it to charge up your ...

i need schematics for a solar powe battery charger or a dc to dc battery charger i want to charge 9v batteries coz i'm make a surveillance system for my house and i thought for the out door cameras to be wireless so i need to charger 2 9v battired...

Much easier to buy one, since you have to buy the solar array anyway.

Make sure you get one that will automatically cut off the charge when the battery is fully charged, so you avoid overcharging and damage to the battery.
...

2008-08-23 21:09:17 by yay caps

My 12V 300A is a solar charger

Hi Helpless Owner,

No, you shouldn't try to charge a nine volt battery with a 12 volt charger. You can damage both your charger and the battery.

Norm

2007-08-25 23:01:34 by Helpless Owner

I am about to make a electronic circuit where i need am drawing power from 1 9 battery.. To charge that i have placed 2 9V solar cells connected to a lm317 so i will only charge them at 10% of their capacity. What will happen if i charge the...

Depends on the battery I suppose. All batteries have a limited lifetime (even capacitors). Does this circuit work 24hours a day? If so deign the circuit so that the draw from the batteries occurs at night and during the day you increase the duty of

2008-10-01 12:43:12 by Kasper L

i have a small solar panel about 15x25 cm that has a built in aa battery charger and a lead with a range of power sockets for charging various objects and it has;
3v 200ma,
6v 100ma,
9v 50ma and a
12v 50ma...

The 3v motor probably takes an amp or two, so the panel doesn't have enough current.

Do not get in the habit of measuring voltage on your tongue! Voltmeters are cheap, $10 or less. Do you want to lose sense of taste? Or be unable to...

2008-07-09 17:28:31 by Jules M

Hi guys, i need some help, i got a small room that i wanna power up by solar panel that i can make, i want to see if i can do it

in my room:
two laptop: requires DC 19.5V which uses a charger AC 19.5
two wired mouses:...

This looks like about 300W of loads, similar to a small cabin. I'm going to assume the fan runs pretty much all day long, and the laptops, maybe 4 hours, and the light, 8 hours. We end up with about a 3-4 kWh / day requirement. That's an 800W...

2009-07-29 22:04:38 by Jeffrey