The battery builders club

Not many people there bro. Esk8 is niche, but in the middle of the pacific I’d guess even more so

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Sometimes ebay sellers accept to ship but when you live so far away stuff can take so long to arrive.

Damn 280k, thats really not that much.

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Yeah thats why I thought there might be some local ebay guys. Oh well

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For other stuff there must be people who DIY like RC stuff maybe. I should try and find them.

Idk but i would guess that general DIY stuff would sell in Tahiti too, like everyone needs some good quality wire, surprised that there is noone already doing it…

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Has anyone used the LTT 60A smart BMS?

got it working
its functional but doesnt look great
all good though and works fine

the shape of the packs made it super hard to get looking nice.
in future i would do each p group seperately

I got a LLT bms that won’t balance the 11th group, no clue why or what could cause this.
Has this happened to anyone else? Do I just have to replace it? :frowning:

BMSs balance high to low, they bleed high voltage cells as heat, if you have 1 low group the 11 normal groups will drain to match

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Yeah, I have. What do you want to know?

How well do they work? I’m thinking of using a smart discharge BMS so I can measure state of charge by I/O Ah (the % measure in the XioXiangBMS app)

I noticed no difference to the bypassed 20A LTT I use now. Everything functions the same, in fact I think that the 60A version just has more mosfets soldered in parallel compared to the 20A version. Why would you want to use a discharge BMS if you’re only going to read the state of charge though?

I would run it in discharge so it gets amp monitoring, is it significantly larger?

It’s basically a double decker version of the standard 20A model. Same length and width.

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Have you used them personally?

I have one, let me check it’s actual height. They’re already relatively slim, but in comparison I guess it would be significantly more thick.

16mm thick for the 60A vs 9mm thick for the 20A.

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This is expected behavior. The balancing method these BMSs use knocks down the high cells until all the cells are matched. Since cell 11 is the lowest of all, it will be the last to balance. In fact, it will never actually balance cell 11, because once cell 11 is high enough to balance, all the cells in the pack will be at that same voltage, and the balancing will be done.

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I used a 60A LLT before but it was bypassed.

Huh, but after an hour of the bms “balancing” nothing changed… mhm :confused: