Statements like this just make me cringe and want to run away "#2 According to Zamp; MPPT controllers only effectively optimizes power input to the batteries if you have 1,000w or more." The BS is just oozing out of that statement.
Phil, I could complicate things by quoting the amps and volts (nuts and bolts?) of the panels you have and are considering, but won't unless you ask me to. Just be aware that those panels are not going to give you the 250W on the roof that you hope for. I was just looking at the ZAMP website, and details on their panels are hard to find. That said, their 170 "Legacy" panel will only produce 135W under ideal conditions. Under ideal conditions, a MPPT controller can get all 170W out of the panel. Ideal never happens though.
Phil, I could complicate things by quoting the amps and volts (nuts and bolts?) of the panels you have and are considering, but won't unless you ask me to. Just be aware that those panels are not going to give you the 250W on the roof that you hope for. I was just looking at the ZAMP website, and details on their panels are hard to find. That said, their 170 "Legacy" panel will only produce 135W under ideal conditions. Under ideal conditions, a MPPT controller can get all 170W out of the panel. Ideal never happens though.