Seeking your MPPT CC Advice - Off Grid

[SunEagle]

My bride has already claimed Queen Of The Universe, so that position is taken.

As long as that doesn't make you the court Jester.

[TriggerGolf]

I bow to my superior...

I never went with the cheap grid tied panels from craigslist. After all the differing advice and opinions I settled for a 100watt single panel kit from eBay. K.I.S.S.

Windy nation 100watt 12 volt panel 40 x 26
17.4 vpm
5.75 imp
10 amp pwm cc
20 feet of cabling
Mc4 connectors
Panel mounting brackets

From eBay for $169.99 shipped

This kit charges a 122 amp hour everstart group 29 marine battery which we use for camping.

Our main draw is a periodic 2 Ah from an ARB portable fridge freezer over an entire day. In the evening we will use a pair of 5v USB lights, under 2 Ah.

This is all we need for camping and emergency hone use with out spending $200-$300+ on an mppt.

Solar Peasant (aka TriggerGolf)

[SunEagle]

I never went with the cheap grid tied panels from craigslist. After all the differing advice and opinions I settled for a 100watt single panel kit from eBay. K.I.S.S.

Windy nation 100watt 12 volt panel 40 x 26
17.4 vpm
5.75 imp
10 amp pwm cc
20 feet of cabling
Mc4 connectors
Panel mounting brackets

From eBay for $169.99 shipped

This kit charges a 122 amp hour everstart group 29 marine battery which we use for camping.

Our main draw is a periodic 2 Ah from an ARB portable fridge freezer over an entire day. In the evening we will use a pair of 5v USB lights, under 2 Ah.

This is all we need for camping and emergency hone use with out spending $200-$300+ on an mppt.

Solar Peasant (aka TriggerGolf)

I understand you desire to keep the costs down and actually you can go to 200 watts of panels and still use a PWM charge controller but it will have to be a 15amp type..

Based on that 122Ah battery a single 100 watt panel at Imp = 5.75 will not be enough to charge it. You need to add a second 100 watt panel in parallel to the other. That will get you around 10 to 11Amps which comes to about a C/12 charge rate which is low but acceptable.