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I've used the CTEK D250s Dual with Smartpass which is essentially a DC to DC smart charger that uses an initial VSR pass through to charge at 80 amps. When the battery is near charged the unit will flick over to DC to DC mode to achieve maximum charge.
Power system hooked up and ready to go! 155AH vmaxtank battery charging from a CTEK dual charge controller off solar and our alternator.