The battery builders club

How-Tos & Esk8 mechanics
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17513

:joy: yeah that’s what I wanted to do but don’t want neighbors to call 911 for “playing with explosives/fire” I know they would call them if they saw it or heard it

17514

It’s not that much energy, if you have a bucket you can fill it with salt water and toss it in then watch it boil

4 Likes
17515

tomorrow maybe I’ll do it

3 Likes
17516

Does anyone have the image showing the center area of the negative pole of a cell, where one should not weld?

3 Likes
17517

image
image833×300 20 KB

8 Likes
17518

I have a battery with a huge discharge bms that I’m fed up of (the bms not the battery itself)
What’s he best way to remove the bms and replace for a small daly one?

Thanks a lot

Any tips are welcome

17519

Pretty much plug and play if the JST is the same as the small DALY (Other than re-wiring the output to bypass, but that shouldn’t be too difficult)

1 Like
17520

Gonna have to redo balance leads (one at a time and no shorting)

Otherwise just confirming that it’s redoing main outputs and that’s it

17521

Yea then pretty much, just the negative lead to bypass P- and go straight to the output.
once the JST is unplugged just desolder them, there isn’t a big short risk in just having the wires on there (Don’t cut the jst with scissors, thats the only way to short easily)

2 Likes
17522

Is it possible to take out the crimped ends from the connector and put them in a different one?

1 Like
17523

yep
super lucky the bms both have the same connector so its gonna be plug and play

1 Like
17524

Thank you!

17525

This is now my favourite way of storing loose excess cells.

20210826_110230
20210826_1102304032×3024 3.63 MB

13 Likes
17526

please record and upload the video if you do - thanks in advance :slight_smile:

1 Like
17527

I would recommend a smart LTT BMS instead - they’re pretty nice

1 Like
17528

was considering but since my old bms had the same crimps already in place… (daly it was)

quick question
the battery is around 3 years old and built by a very reputable forum builder.
when i opened it i noticed the balance leads crossed over at the end (i think that was pretty standard at the time)
whats the best way to sort it out? (cover them all in silicone?)

IMG_20210826_153701
IMG_20210826_1537014640×3472 2.35 MB

17529

you can use fish paper to isolate individual balance wires so that they don’t rub against each other. After that, if you’re feeling up to it, you can open the whole pack up and try to arrange the balance wires so that they’re next to each other.

1 Like
17530

nope
cant be bothered

not easy to do in this situation as they are very muddled together

17531

you’ll most probably be fine just not doing anything. Just don’t abuse the pack - and if it does die, then looks like you got some good use out of it so

1 Like
17532

Could you slather the whole thing in hot glue? Can’t rub together if they’re stuck together :grinning_face_with_smiling_eyes:

1 Like