The battery builders club

Would someone be able to check my diagram? I want to make sure I dont make magic smoke. :):slightly_smiling_face:
I’m using a unity and this bms if it matters


https://s.click.aliexpress.com/e/3PJbCNJw
Anything else I am missing?

Would help if there was a wiring diagram available for the BMS. Some bms have a negative lead that goes into the harness and some don’t

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Other than that is it correct? I will take a look at the BMS when it arrives and see if it has a B0 or B1-. If it does, all I have to do is connect it and I am all good, correct?

To my knowledge that would be correct. And other than that, the diagram looks good to me!

Where?!?
I want one!
(Thanks in advance for the tip👍)

Edit: I saw the Ali express mentioned, woild like to know where you saw it on sale anyway

This seems like a pretty good price. Charge only.

https://www.litechpower.com/product-detail/HCX-D140LI12S15A_05.html

Don’t know what shipping is like

Speaking of really good prices, this ain’t one.
But I had no idea there was a “VTC6” 21700

Anyone used these? Or even seen them?

https://www.cheap-batteries.com/mm5/merchant.mvc?Screen=PROD&Product_Code=INR18650&Category_Code=LI-ION

Also this is interesting

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This is all I’ve seen on them. The 30T still looks like a safer bet for higher current.

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Litechpower.com they have 10s and 12s for 21.99 each.

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30q fors$3.25 at 20+, $3 at 182+. seller looks US based. It looks great? If the seller is legit…

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I’m looking to use 2 100A motors. Do I need a 200A battery? and if so how do I crank that out?

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Like this

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What kind of amazing monstrosity is that?

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Depends on duty cycle. You’d probably be just fine with a 100A battery.

Is that a 12s13p?

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Also how much is a 10s2p 40t cost to buy from someone? It’s like $180 for just materials and $300 with the Meepo mark up…probably the $250ish price range from here?

How do I make sure I would be keeping it safe?

I posted a pair of 40T pack’s I built about a week back, I charge $270 with shipping and paypal fees included. Mainly since cells are expensive in the US and my demand for those is relatively low. If I had reason to order the cells in larger bulk I could lower the pricing, but they’re not replacing 30Q’s yet.

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12s13p sanyo 20700b

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Why do you need 150 cells in that pack? Also who’s is it so flat?