Great review. I’ve had one of these for a while now. I use it on my boat. I fully charge one battery with this then put a maintainer on that battery, then I put this charger/maintainer on the other battery and leave them both running. They keep both of my batteries fully charged.
In your video you plugged the unit into an outlet first, then connected the clamps to the battery terminals. I've seen other videos where they placed the clamps on first and THEN plugged it in to the wall socket. Does it make a difference?
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Thanks for the video. Question, should I connect both alligator clip to the battery terminal. I want to keep it trickle charge when my car sit in the garage. The manual said: For negative-grounded vehicle, connect POSITIVE (RED) clip from battery charger to POSITIVE (POS, P, +) ungrounded post of battery. Connect NEGATIVE (BLACK) clip to vehicle chassis or engine block away from battery.
Either way will work. Keep in mind the further away form the battery negative you go, the more chassis electrical resistance generated. So for trickle charging, I would keep the negative lead as close to the battery terminal.
AGM mode is only used for advanced gas mode 12V batteries, these have a gas converting to water interface. You will know if you have that type, it is almost double the cost!
Great review. I just purchased this. Is the Winter mode for when you are leaving the battery on the maintainer all winter, or for charging also? What temp do you need to use it? I live in California, so not too cold. I just want to charge my boat batteries to top them off for Winter. They will stay in the boat, and I don't have power where I store the boat. So leaving it on Maintainer isn't an option for me. Thanks.