two 9v hobby solar panels connected in series too much for 12v battery?

[Richard1]

Hi all, Is it safe to connect two 9 volt panels in series to produce 18 volts to charge two 6 volt batterys connected in series?

If not would it be better to charge each 6v battery seperatly with a 9 volt panel?

Thanks, Richard....thanks for reading

[Wy_White_Wolf]

No, it shouldn't bee too much.

WWW

[SunEagle]

Hi all, Is it safe to connect two 9 volt panels in series to produce 18 volts to charge two 6 volt batterys connected in series?

If not would it be better to charge each 6v battery seperatly with a 9 volt panel?

Thanks, Richard....thanks for reading

Depends on the type of 6 volt battery and it's Ah rating as well as what the 9 volt panel amp rating is.

Also connecting the panels directly to the batteries could cause you to overcharge them but more than likely those 9 volt panels will not produce enough amperage to charge an FLA battery.

So to be safe what type of batteries do you have and what is the 9 volt panel Imp rating?

[Richard1]

Depends on the type of 6 volt battery and it's Ah rating as well as what the 9 volt panel amp rating is.

Also connecting the panels directly to the batteries could cause you to overcharge them but more than likely those 9 volt panels will not produce enough amperage to charge an FLA battery.

So to be safe what type of batteries do you have and what is the 9 volt panel Imp rating?

Hi Suneagle, the 9 volt panel is rated at 220 milliamps. The battery is 6V 12Ah / 20Hr.


I was just thinking that 220 milliamps is really poor. If i put the 2 x 6 volt batterys in parralel and connet the 2 x 9 volt panels together in parralel that would give me 440 miliamps per hour.

Do you think this is a better idea?

Thankss for your time SunEagle

[SunEagle]

Hi Suneagle, the 9 volt panel is rated at 220 milliamps. The battery is 6V 12Ah / 20Hr.


I was just thinking that 220 milliamps is really poor. If i put the 2 x 6 volt batterys in parralel and connet the 2 x 9 volt panels together in parralel that would give me 440 miliamps per hour.

Do you think this is a better idea?

Thankss for your time SunEagle

No. Wiring those 6 volt batteries in parallel would get you a 6volt 24Ah system.

Unfortunately those panels at best will get you a little less than 0.5 amps together which is not enough to charge even one of those batteries. They are used to maybe maintain a small battery from discharging but not big enough to charge anything.

I would wire your 6 volt batteries in series to get a 12volt battery system. Than get a 40 watt battery panel and a 5 amp charge controller.