24v solar panels 12v battery bank

[K1ngN0thing]

I'm looking into buying some unisolar flexible 24v panels to charge a 12v battery bank. As I understand it, I'll need an MPPT charge controller. I see some that are $500+ and others that are under $200. What is the difference? What's the least I can spend for an MPPT that will let me use 24v panels to charge a 12v bank?

 

[K1ngN0thing]

Found a bundle http://www.ebay.com/itm/128-Watt-De...506?pt=LH_DefaultDomain_0&hash=item1c5024066a

EDIT: nvm, those panels are 18feet.

 

[K1ngN0thing]

Seeing as there aren't any other peel and stick panels on the market, what's the best way to mount something like http://www.ebay.com/itm/100W-Watt-1...004?pt=LH_DefaultDomain_0&hash=item461eb919f4 without drilling holes for screws?

 

[jimindenver]

You can use VHB tape under that panel or under the mounts for a MUCH lower priced framed panel. They also make glue down mounts for framed panels.

 

[jimindenver]

These are some of the glue down mounts. Others are out there.

http://www.ebay.com/itm/like/400885517707

 

[K1ngN0thing]

My roof is curved so I don't know if I can mount a non-flexible panel. How do those glue brackets hold the panel in place?

 

[jimindenver]

You glue down the mounts and screw the panel to it

 

[K1ngN0thing]

Does anyone have experience with this type of "panel"? http://www.ebay.com/itm/1-Panel-100...235?pt=LH_DefaultDomain_3&hash=item51ce3445e3

 

[jimindenver]

This is VHB tape.

http://solutions.3m.com/wps/portal/3M/en_US/Adhesives/Tapes/Brands/3M-VHB-Tape/

 

[K1ngN0thing]

Disregard. My roof is flatter than I thought. Looks like I'll be able to go with the rigid panels.