That panel would work fine, but the model without the PWM waterproof charge controller would be better. You do not want to use a panel connected to a charge controller but directly from the panel to the EB3a. the (2 X 5.85) denotes that the Renogy panel is actually (2) 100 watt panels rated at 5.85 amps each. You will see an absolute max. of 160 to 165 watts in any case with the EB3a regardless of panel choice.