I’m starting year 3 with the Power Pole Charge and 3 Ionic 50ah, and 1 Pro Guide AGM, mine has been dependable. I live up in the mountains in MT and keep the boat in an unheated shop, so I disconnect the charge over the winter and charge the agm once or twice over the winter with a stand alone charger. I reconnect everything in the spring and everything has worked well. I haven’t had the problem with the middle lithium not being charged. If I’m making long runs, I’m usually at or close to 100% by the time I’m back to the ramp.