3 Bank Marine Battery Charger, 12V 30A (10A/Bank) Smart Waterproof Onboard Boat Battery Charger, Battery Maintainer & Desulfator for SLA/AGM/Lithium (LiFePO4), Calcium and Deep-Cycle Batteries

I have a mix of two lithium batteries wired in series to my trolling motor and a lead acid cranking battery. I needed a new 3 bank charger that could support LiFePO4 lithium batteries and a lead battery independently.The first time I charged the batteries with this charger I got a little nervous because I left them connected long after the charge was complete and the LEDs on the charger were red. Later I realized the cause was a breaker was reset in the electrical panel. The power disruption caused the red LEDs ( my boat fully charged and the batteries and charger were fine).Since then I moved the charging cord to a clean circuit to avoid power disruptions and no more issues — a fully charged battery always produces green LEDs.I don’t know if this is a problem, but it seems strange that when I remove power from the charger after the batteries are completely charged, the bank responsible for charging my lead acid cranking battery doesn’t turn off. It seems like the battery is back feeding power to that bank at least enough to keep the green LEDs lit for days.The quality of the charger has been great after about 15 charges.

This is a great charger. It charges fast, the connections are really well made. Everything is solid and sturdy. Would definitely recommend.

I have the charger attached to two LifePo lithium batteries in my boat. It has been great up to this point!

Easy to use, easy to install, looks nice and is waterproof. Only downside is the alligator clamps instead of eyelets on the cables, but that's an easy fix. Good price for a 3 bank and has a good warranty.

I'm very pleased with the product work very well.

Make sure you check the size of this thing out first. It was larger than I expected but I found a spot to mount. It works great and I like the fact you can charge different types of batteries at the same time. This is well worth the money if you are using three batteries. I run three12v batteries for boat, trolling motor and Fish finder. Water tight, Money well spent.

This is really sturdy unit. I installed it on my 19' aluminum fishing boat to charge 3 12v lithium batteries. The charger works fast and delivers 10amps to each battery.It does not have a percentage readout but it has 5 lights that represent 20% each and they flash between the 2 so 60-80% would flash between 3rd and 4th light etc.This unit is larger than the picture shows but the written description is accurate.All in all it's a great unit and pleased with its performance.

Great. However having a battery circle battery ring for a boat charger would have made more sense.