Thread: Lithium battery configurations ...

Originally Posted by J White

Ok, y’all forgive me if I recollect our conversation wrong. But as I recall, I pitched going 3 12 volts in series to him. That’s when he told me my minnkota digital 3 bank wouldn’t work. Said it wouldn’t hurt the batteries, but he has seen them melt the fuse holders on the charger leads. Didn’t recommend using it (mk digital). Then we covered that if I went 3 12 volts in series, I was out of option if that wasn’t enough capacity. I told him I had high needs, heavy boat and wanna troll like heck…
He said I could go 2 36 volts hooked parallel, and if that wasn’t enough, could add another in parallel. But that he doubted I’d ever use more than the 2 36’s. If so, it was same $ or cheaper to go that way, and it would run circles around a 12v series setup.
Hope I conveyed all that accurateiers there is alwaysly!


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The only problem I see with the 36 volt lithium's is when the BMS locks out the battery ( and it will happen ), finding 36 volt source to unlock it. Where as 3 12 volt batteries there is usually a 12 volt source handy, or a dead starting battery no way to jumper. Just my 2 cents.

Double post

I have one big 24 volt 60ah Impulse Lithium (for terova), and a small 18ah Impulse Lithium for the finders (one live scoper, and another garmin side imager). Love them, and I never even scratch the surface of their capcities. The thing with these is it's app, you can monitor literally every electron going in or out. I never have a worry. Oh, and I have a group 27 acid filled one that does the starting and such.

Don't forget, might want to give Bill from Impulse Lithium a call (205)965-8436. Like I always say, support those that support us.

Originally Posted by Bricks

The only problem I see with the 36 volt lithium's is when the BMS locks out the battery ( and it will happen ), finding 36 volt source to unlock it. Where as 3 12 volt batteries there is usually a 12 volt source handy, or a dead starting battery no way to jumper. Just my 2 cents.

Can you explain what happens to make a BMS get “locked out”? This is the first time I’ve heard of that. To unlock it the battery, it’s fully charged voltage must be applied to the terminals? How often does that occur?


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Originally Posted by Bricks

The only problem I see with the 36 volt lithium's is when the BMS locks out the battery ( and it will happen ), finding 36 volt source to unlock it. Where as 3 12 volt batteries there is usually a 12 volt source handy, or a dead starting battery no way to jumper. Just my 2 cents.

Those are good points. The ability to jump the starting battery was one of the reasons I wanted to go all 12v.
Plus I’m a tightwad and was wanting to keep my nice, newish MK 3 bank charger. I’m thinking if I went with 3 120 AH batteries, as great as lithium is supposed to be, what are the odds I would ever need more capacity?
Now, the locking thing, apparently I have more yet to learn. Thankfully I’m looking at doing my tm setup next year, so more time to research.


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Here is why I went 2 12 volt......

1-can jump my starter battery if I have to
2-something happens to one of the trollers, can use the starter battery(once I get one)
3-or I can use a cheap lead acid to get me by for a day or two (now somebody gonna say you can't do that. The company I bought them from says no problem short term)
4-waking the 36 volt should you run it down(can it happen,yes, will it happen, maybe not)
5-like Rickie, I have plenty of space

When I bought mine, I don't think Bill was in business. Had he been, I probably would have went with Impulse cause he's about 45 minutes from me.

Originally Posted by Slab

I have one big 24 volt 60ah Impulse Lithium (for terova), and a small 18ah Impulse Lithium for the finders (one live scoper, and another garmin side imager). Love them, and I never even scratch the surface of their capcities. The thing with these is it's app, you can monitor literally every electron going in or out. I never have a worry. Oh, and I have a group 27 acid filled one that does the starting and such.

Don't forget, might want to give Bill from Impulse Lithium a call (205)965-8436. Like I always say, support those that support us.

On the bluetooth phone app - can you reset the bms with it? Been scouring net for an hour and haven’t found an answer


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Originally Posted by J White

On the bluetooth phone app - can you reset the bms with it? Been scouring net for an hour and haven’t found an answer


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Not that I can see Jeffy. Try giving Bill a call and ask, super nice guy. I'm sure he can answer all your questions.