I understand your not suppose to charge them till they get down to 40% at least. Is this true?

I'm often busy at the shop but anyone can call below and I can give my spiel on lithium batteries. We are an Ionic dealer as well and are cost competitive. They're excellent. We love them for the weight loss, cause GO FAST! Ionics have the neat phone app. Lithiums hold amp hours a little differently than lead acids as well. 50ah is sufficient for all but the most serious trolling guys who I have go with the 100ah. I personally am actually only running 2 35ah batteries in my Allison. I've never killed them, however I'm not that serious of a fishermen. An 8 hour tourney day for me happens every once in a while but is rare. I run a stealth charger.

I understand your not suppose to charge them till they get down to 40% at least. Is this true?

I don't see how this technology could possibly be safely feasible right now. I'm not read up on it at all, so take that with a grain of salt, but I have knowledge of lithium batteries in RC cars and you have to walk on eggshells charging those. The other concern I would have is the integrity of the batteries themselves. A lot of times with the RC Lithium batteries when they get damaged from bumping around and tend to puff out making them dangerous and oftentimes, unusable. I wonder how the current lithium's will hold up to pounding that the lake will put on them.

That would be good. Lithiums do not like to be fully charged and sit. If I was fishing once a week I'd charge the batteries just before I went.
Forty to sixty percent and they will live longer.

I'd like input from those that have converted to Lithium batteries for your trolling motor batteries and what charger you are using with those batteries?

I'm often busy at the shop but anyone can call below and I can give my spiel on lithium batteries. We are an Ionic dealer as well and are cost competitive. They're excellent. We love them for the weight loss, cause GO FAST! Ionics have the neat phone app. Lithiums hold amp hours a little differently than lead acids as well. 50ah is sufficient for all but the most serious trolling guys who I have go with the 100ah. I personally am actually only running 2 35ah batteries in my Allison. I've never killed them, however I'm not that serious of a fishermen. An 8 hour tourney day for me happens every once in a while but is rare. I run a stealth charger.

This is a young guy who knows his stuff when it comes to boats and accessories. PM me a price list on what you have Trace! Or post it if you want. Just got a Basscat Eyra and have a 36volt system with a MK 440 PC charger.