Re: What charge controller to use?

[elnav]

The best type of controller are termed MPPT which stands for maximum power point

tracking. It will handle high open circuit voltages but remember that as soon as you apply a load the voltage drops in any case. The manufacturers spec sheet will tell you the highest open circuit voltage their device can handle but typically its in the 48- 60V range so no worries.

Internal switch mode circuit is constantly adjusted to give optimum charge to your battery bank. Sounds like you will have a great system when assembled.