The battery builders club

How-Tos & Esk8 mechanics
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#1102

Hi Les-

No, you just the need a single 10s BMS.

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#1103

I think I’ve read those tend to melt? And they’re rated for 12v right?

I believe vruzend is a bit chintzy. Take a look at NESE, it’s a lot more robust.

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#1104

These get mixed reviews. If you search a bit, you’ll see that. They make the finished battery a lot bigger than it needs to be.

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#1105

Les just joined us from Builder’s, guys. Welcome!

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#1106

Thank you guys. Really appreciate all the info seeing a thread with 1097 replies about building, I nearly fell out of my chair.

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#1107

Another great area for anything you’re totally unsure about is here:

#1108

Is there any difference between fusing the positive and the negative?

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#1109

Thanks for the advice :slight_smile:

  • I’m gonna change it to a sand filled one
    (I liked the clean look of the glass fuse)
  • there is pretty much nothing I can do about that :man_shrugging:t2:
  • wires can bend easily right behind the chargeport
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#1110

Not really, just make sure there is a fuse c:

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#1111

If you, like me, don’t want to weld packs and prefer modular packs, there is a much better way: NESE. They are available for 18650 and 21700 cells.

I have them in two of my boards and have put 1200km on one and more than 400km on the other.

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#1112

charge cycles? :face_with_monocle:

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#1113

edited to reflect that i meant km

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#1114

Hey guys, I’m starting to order parts for my battery build, but does anyone know if ru.nkon site is down? Shipping quotes aren’t available and I can’t order any 30q

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#1115

Your timing is unfortunate.

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#1116

:sob: damn, that was the only site what sold $2.74/30q cell for the US. All the other sites sell them around $4.75/cell for 30q. :sleepy: guess I’m not building packs anymore

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#1117

I actually read somewhere it’s not. You are supposed to place the fuse between the main negative on you battery and B- on the bms. The fuse should then be placed as close as possible to B-.

@taz is the man I believe that said that.

The way it’s wired now, will only protect the charger from toasting the BMS but by doing it the other way, you’ll be protecting the battery. I have one each place.

I’m not completely sure if that’s how it actually is, but just what I think I remember. Please don’t hang me up on it but correct me :sweat_smile:

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#1118

Yes, I build batteries, on my thread the pricing is explained, if you need more info just send me a message

#1119

20190919_234408
20190919_234408.jpg3024×4032 4.27 MB

One more set of welds and then it’s on to the balance tabs and S connections.

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#1121

I’m interested in that system I’ve never built a battery before i figure this will help me learn.

#1122

Click on those orange links. You’ll know what to do.

1 Like