Solar Panel Kit with Controller

[Corwin C]

One small detail. I believe that to get the best performance from your batteries, you should move either the positive or negative wire that goes to the load to the other battery. That will balance the loads on the batteries more efficiently. It's a small detail and will operate the way that you have it, but the way that you have it the first battery will be working more than the other and wearing it out prematurely.

for the positive side: +load → +BatteryA → +BatteryB
for the negative side: -BatteryA → -BatteryB → -load

Hopefully this makes sense...

[Bogo]

One small detail. I believe that to get the best performance from your batteries, you should move either the positive or negative wire that goes to the load to the other battery. That will balance the loads on the batteries more efficiently. It's a small detail and will operate the way that you have it, but the way that you have it the first battery will be working more than the other and wearing it out prematurely.

for the positive side: +load → +BatteryA → +BatteryB
for the negative side: -BatteryA → -BatteryB → -load

Hopefully this makes sense...

If the batteries are right next to each other, the amount of difference is so tiny that is doesn't matter. The exception is for very high amperage uses like a 1000W plus inverter, and it is hooked up with the minimum size wire needed.

[absolutsnwbrdr]

Hopefully this makes sense...

They will be right next to each other, but as a standard for practice that does make sense.

[Bogo]

With 48VDC you don't gain much over going to 24VDC from 12VDC, but you do go over 50VDC when charging, which changes the wiring rules. All your replacement parts will likely be mail order only. Not many paces will have a local supplier.

For inverters and compressors for coolers and air conditioners, using 24VDC gains you 8% to 10% in efficiency over using 12VDC. The additional gains going to 48VDC are only a couple more percent.

Many regular bulbs, and LED bulbs are available in versions that accept 24VDC.

You can find truck stereos that accept 24VDC. Never seen one made for 48VDC.

All those blade type car fuses are only rated for 30VDC.

In a vehicle or trailer I'd go with 24VDC instead of 48VDC. In a house is a different story.

[Shadow Catcher]

From what I have been able to tell this is a 10W panel and at this low a current you can hook it directly to the battery with out a controller. This will not deliver much but it will assist.