# the very first solar panel

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hi all

im kinda new to this solar panel.

i have these
-2pcs 12v solar panel with 50watts each
- solar charger controller
-100ah (20hr) battery deep cycle

im living in asia where its very hot here
average temperature is 92 to 94 degrees fahreinheit

my question is
1. How should i wire my panel to give best output, series or parallel?
2. Will buying "wellsee brand" MPPT controller is best for my location?
3. Is solar panel works 100% best in a very hot location like hours?
4. can the solar controllers be used for wind turbine as their controller charger?
5. How long will it full charge a 100AH(20hr) using 50watts solar panel?

btw heres my solar panel for your reference

Thanks

• Solar Expert Posts: 5,436 ✭✭✭✭
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Re: the very first solar panel

Your two panels, wired in parallel will be lucky to put out ~4 amps into 12 volts under ideal conditions,, conditions that are unlikely to be available more than ~ 4 hours a day.

Regarding the controller: having no experience with said controller, my best guess is to do your calcs based on a simple PWM controller, and if this controller works well, then that power would be a bonus.

So best case, 100 ah battery, 50% discharged, 50 ah, would take ~4 days of ideal conditions to bring back that 50%.

4amps*4 hour= 16 ah/day, plus ~25% for basic battery charging losses.

In the real world I suspect that your panels will only put out ~ 3 amps from the controller, making it take even longer. 3*4= 12 ah/day plus charging losses, call it five perfect days.

Tony

My quick rule of thumb, is, if you take the name plate rating of the PV, divide it by two to account for total system losses (charge controller/wiring/battery charging chemistry/inverter loses etc) that will give you a very rough idea of how much you can get out of a system. The multiply that number by the number of hours of "good" sun you can expect on any given day (seldom more than 4 hours net/net).

100/2=50*4=200wh/day,, convert that to ah into 12.5 volts and you are left with,,,,16 ah!
• Banned Posts: 17,615 ✭✭✭
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Re: the very first solar panel
waylain wrote: »
hi all

im kinda new to this solar panel.

i have these
-2pcs 12v solar panel with 50watts each
- solar charger controller
-100ah (20hr) battery deep cycle

im living in asia where its very hot here
average temperature is 92 to 94 degrees fahreinheit

my question is
1. How should i wire my panel to give best output, series or parallel?
2. Will buying "wellsee brand" MPPT controller is best for my location?
3. Is solar panel works 100% best in a very hot location like hours?
4. can the solar controllers be used for wind turbine as their controller charger?
5. How long will it full charge a 100AH(20hr) using 50watts solar panel?

Thanks

You're right: solar panels don't like heat!