BUSBARS-WHERE TO FIND THEM?
- Thread starter nwillitts
- Start date
Ampster
Renewable Energy Hobbyist
Buss bars are pretty specific to the battery type. I am making my own to avoid multiple connections on a 2P 16S pack. In that configuration there are a lot of 4 hole buss bars. My preference is to have one buss bar for that connection then rely on 3 or 4 separate bars.
Ampster
Renewable Energy Hobbyist
The center to center distances between posts is sometimes different depending if you are going off the end to another cell or across the cells.
PHoganDive
Solar Enthusiast
FYI, For mobile use, tying batteries together with solid busbars put a LOT of stress on battery terminals as they jiggle around. You should consider ones made with copper braid instead.
ok,thanks for that.
ok,measured,cut and drilled this.
pretty tough to drill.mounted them on batts,balance charging with this-
this power supply-
lets see what happens.
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pretty tough to drill.mounted them on batts,balance charging with this-
this power supply-
lets see what happens.
mandrews44
Solar Enthusiast
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- Jun 9, 2020
- Messages
- 247
I thought of going that route with my last build but that is quite expensive. It would be cheaper, and some would argue against it, to use 1/4" x 1" aluminum bar stock. Unless you need more than 200amps, 1/4" x 1" aluminum will easly handle 100amps without any issues at all and doesn't cost $36/foot.
If you batteries are "jiggling around" in a mobile install, you've got bigger things to worry about than your busbars. FYI almost all drop in batteries use solid buss bars if they use prismatic cells. I'm going on 5 years with my DIY lithium bank in my van with solid bus bars and zero issues.
Electric Personality
New Member
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- May 9, 2020
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How much current are they good for? Also, anyone selling them, or are they DIY?
You can buy them, e.g. from places like this. I make them myself. That one is rated for 150A.
Whilst I think this is a fair point, jiggling around would be very bad for bussbars, I would offer just make sure your bussbars don't jiggle around! That is, physically secure the battery with, for example, hose clamps or similar.
Mind you, those braided bussbars do look nice
p.s. There are also loads of places you can buy such busbars on, for example, aliexpress.com:
Edit: Added postscript.
heirloom hamlet
life my way
For our 280aH Xuba cells, we just took some 3/8” copper M coil tubing we had, and pounded it flat on an anvil. We custom cut for our cells at 4" lengths and drilled 5/16" holes (for 6mm stainless screws) at 3.5" on-center.
We also want to have the option to connect two packs in parallel, and everyone now knows these cell's terminals are not the same measurement end-to-end vs side-by-side. So I made a couple of bars longer with the appropriate on-center measurement to do that. In my case, I had to take into account the thickness of these trays I made for each pack.
We also want to have the option to connect two packs in parallel, and everyone now knows these cell's terminals are not the same measurement end-to-end vs side-by-side. So I made a couple of bars longer with the appropriate on-center measurement to do that. In my case, I had to take into account the thickness of these trays I made for each pack.
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