timjet:
It has been a while since I looked at IOTA chargers, but they used to sell a simple charger, presumably with just a preset float voltage, that you could hook up to their IQ three step controller that would make it a full 3 step charger. One controller could handle several chargers and the chargers were designed to be paralleled.
Almost all are sold now with an integral 3 step controller.
David
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