How long can you leave a solar battery charger hooked up to your auto?

Filed under :Solar Charger

My car battery goes dead if I don’t start it every 2-3 days. I want to go away for 2 weeks or so.. would I be able to leave a solar battery charger hooked up to my auto for that amount of time?
I haven’t bought one yet just collecting information right now.


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How long can you leave a solar battery charger hooked up to your auto?

Filed under :Solar Charger

My car battery goes dead if I don’t start it every 2-3 days. I want to go away for 2 weeks or so.. would I be able to leave a solar battery charger hooked up to my auto for that amount of time?
I haven’t bought one yet just collecting information right now.


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Do I only need solar panels to have energy in day and through the night?

Filed under :12v Solar Panels

So I want to go completely solar. Do I need the connected solar panels alone for after sundown hours; Do I need something else in order to have energy to run my entire house throughout the night?

In other words do solar panels store the energy for after sun-down or do I need other devices to store the energy?


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will a 15v 52watt solar panel charge four 12c dv 55ah batteries?

Filed under :12v Solar Battery Charger

I have made a 15v dc 52watt solar panel and I going to be trying to charger 4 12v dc 55ah batteries. I get about 6 hours of sun on my panel. Spec below, is that a big enough panel to charge the batteries???

I have 30 3×6 solar cells wired together Cell Specifications: (Watts): 1.75 Wp (Amps): 3.5 Imax (Volts): 0.5 V max which is where I got my 15g 52watt max (if math is wrong plz tell me) The Battery type: 12Volt 55.0ah NB Sealed Lead Acid Battery. I am using a mppt solar charger.


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If I installed 20, 100 watt solar panels and 20 12v batteries for power storage?

Filed under :12v Solar Panels

how much of my power needs would this generate? This system would be not be tied to the grid unless there’s a benefit. We use about 600kw monthly and receive 5.5 hours of sun light daily. Thank you for any help. Chris


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Charge a 12V-7AH with a car charger?

Filed under :12v Solar Charger

I have a portable speaker/music system that is powered by a 12V-7AH battery. I have a couple extra batteries, and would like to be able to charge them via a 12 volt car charger (and/or a 12 volt solar panel with car socket that I have). I have an AC charger for the speaker itself but would like to charge the batteries directly via DC. Is this possible and if so, what would I need to buy/construct?
What kind of solar charger controller would I need? A quick google search pulled up a bunch but they all seem a little big and pricey?


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Buy an extra battery or buy a solar charger for my Blackberry?

Filed under :Solar Charger

I play my mobile a lot everyday, surfing,calling,watching video and listening music, hence,my mobile battery can’t last even one day sometimes, which choice is better? An extra battery or a solar charger?


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How many solar panels do I need to run a pump?

Filed under :12v Solar Panels

I plan to buy solar panels of the following configuration:
Sun Force 39110 / 123 watt – 7 amps

To run through an inverter, to produce the 110v I need to run the pump during the day.
The pump is 110v / 7.5 amps / 0.5 HP

My question is, how many solar panels would I need to run the pump?


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Is it possibly to charge a 12v 100ah sealed battery when it is only giving off 5.5v?

Filed under :12v Solar Battery Charger

I have a 12v 100ah sealed battery which was given to me. It is around 8 months old. I tested it and it was giving off 5.5v. I tried connecting it to a 35w solar panel (using a regulator) and taking regular readings. It was left for a week and there was still no change to the voltage in the battery.
I then tried connecting it to my car battery charger for a few hours (a 10amp charger) – still the battery will not increase its charge. Is there anything I can do to get it back up to 12v?


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can i connect a solar panel 12v direct to a 12 v power inverter?

Filed under :12v Solar Panels

im trying to generate solar power.


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