Scattered_Prints
New Member
- Joined
- Dec 18, 2020
- Messages
- 3
Hey all, I'm putting together my first PV system and am uncertain what amperage I should look for in my charge controller. I will also charge the battery with the vehicle's alternator, aware that the 175W panel will take forever to fully charge the battery (I have limited roof space). If I understand correctly, I would need a minimum of ~15A for the 12V system but should leave some breathing room. How many additional amps would be sufficient? Would a 20A charge controller do the trick and would anything greater even make a difference powering a 200Ah battery off a 175W panel?