The battery builders club

Havnt heard back yet, very exited about the prospect lol

Fixed it

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Hot tip: organise the balance leads before you solder them.

I use hot glue under and over the balance wires, a bit of spit on your thumb to squash it down and cool it quickly

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:rofl: :rofl: I knoww man, I learned the hard way.

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I’d just desolder and go again if i were you :+1:

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oh it’s all good, it hath been fixed!

unless this looks bad to you?

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That’s totally fine

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Looks good. Much better :+1:

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just realized I got conflicting advice from you guys; solder fuse into positive or negative line of charge port?

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Its not a super big deal, but since the negative terminal of the battery is normally considered ā€œGroundā€ or ā€œZero Voltsā€, a fuse in the negative lead would leave the rest of the circuit ā€œhotā€ - usually Not a Good Thing.

Recommended practice is to place the fuse near the positive terminal of the battery, so the whole circuit will be dead if the fuse blows.

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1+^ should fuse be in enclosure on in charger?

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A fuse should be inside the enclosure, it protects from shorts along the wires or in charge port, like water or something else conductive bridging the contacts.

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This works better than it deserves to

Also the alternative if you don’t use spit and touch it is a really sucky burn. High temp hot glue burns really suck

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I’d guess some inappropriately high current went through that trace and caused some… undue heating… and the heat caused the adhesive under the trace to let go? Maybe?

Hi there, a friend recommended me to you on built a new battery and bms… I’m in singapore

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Hey there! I don’t think I’m the right person to be building packs for others yet, since I’ve yet to build one on my own :sweat_smile:

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Do u know of anyone that can do bms and battery for ownboard bamboo in Singapore

It would be way cheaper to buy a new one from ownboard than to get it custom made.

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Truth. People ask me to build packs for their shitty boards and then are shocked when I tell them the price.

A lot of the big China manufacturers can sell a battery and enclosure for the same price I can get the raw materials for

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:point_up_2: Truth right here.
Buuuut, when you take a lot of these packs apart you start to wonder why there aren’t more :fire:

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