24 Volt Solar Battery

I have four 12 volt batteries connected in series, and two 80 watt solar panels with a 12/24 volt 30 amp controller. What would be the most effective connections to charge the batteries?

Read the manual for your controller, which I assume is a charge controller. The better ones use a switch mode regulator so they operate over a wide range of input voltages and output voltages.

The manual should tell you what range...

2008-12-14 04:36:50 by FJ

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I need to use the batteries for a solar cell

You will have to determine how much the cell will need and for how long. That is why they use deep cell batteries for boats and stuff that need the amps for a longer period of time. A fork lift battery is huge because the battery has to store a...

2008-04-23 08:22:15 by yara

You need about 13.5 volts DC to fully charge a 12 volt battery. 24.5 volts DC will not fully charge two 12 volt batteries. You could charge the 12 volt battery with a simple charger controller, or or use a DC to DC converter to charge a 12 volt...

2009-12-05 12:02:51 by msnjon

Talking about a 12v deep cycle battery, as would be used on a trolling motor. Am trying to figure out how large a solar charger I need.
I have seen as large as 6 watts. For whatever reason they do not list the amps. Calculating it, 6 watts...

It depends on what size of battery you have.

First, a little background. To charge a battery properly in a way that prolongs battery life, you charge in 3 phases:

bulk phase - "heavy lifting" phase. Most of the

2006-11-21 20:21:10 by impresn

If I have (6) 12 volt batteries wired in series for a total of 72volts. I am thinking about buying a solar charger that is 18 - 24 volts. Do I have to have 3 of these solar panels wired in series to charge the batteries? What will happen if I...

When a panel says 18 volts out, that's the most you'll get out of it. So if you connect it to 72 volts, either no current will flow, or worse, current will flow the wrong way.

I suspect the panel you have in mind is very low power....

2009-01-12 14:55:30 by uptwospeed

I have a small cabin and running solar panels. I can either go with a 12v or 24 v system. the solar panels are on the roof and not far from the battery packs. Is that the only reason to go 24 v is for distance?

The higher the voltage the lower the current that needs to flow, in proportion. Higher current means higher voltage drop over all the wiring so 24V would be a better bet for technical reasons. Rememer the wiring between battery and point of use....

2007-04-07 18:35:56 by rockystartz