Please review my battery pack so I don't make a šŸ”„

ESK8 Electronics
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339

All done. I wrapped it in a fiberglass reinforced tape and used a foam spacer to insulate the bms from the battires.15557068053342044609836 my lithium cocane pack is completešŸ˜‚

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A foam spacer will cause a short under prolonged vibrations. use fish paper

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Yeah i noticed that electrical tape is a bit much. I switched to painters tape.

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Il get right on that

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How is this15557072380861673660632

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Thatā€™s so much better. :slight_smile:

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Yalls thoughts on the current carrying capacity of a cell holder? Will they work if I connect them with 10awg at the top?

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I donā€™t know enough about battery holders, but what holders are you using? I would figure theyā€™re about as good as (if not worse) than a single strip of nickel :thinking:šŸ¤·

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These ones, Iā€™m think the same thingā€¦they only gotta get 20-30 amps from the end of the cell to the 10awg solder block about 6mm from the contact point

https://www.amazon.com/Battery-Parallel-Batteries-Soldering-Ltvystore/dp/B07CWK81BJ/ref=pd_day0_hl_107_3/138-8184915-7614058?_encoding=UTF8&pd_rd_i=B07CWK81BJ&pd_rd_r=40aa7a46-62ce-11e9-8c99-472c1499fd9d&pd_rd_w=2R9mS&pd_rd_wg=hbfiM&pf_rd_p=ad07871c-e646-4161-82c7-5ed0d4c85b07&pf_rd_r=44VTMSEW7MPSK1SBA5C1&psc=1&refRID=44VTMSEW7MPSK1SBA5C1

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Those pins on the bottom look kinda small. Maby try for sonething more heavy duty.

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Iā€™m not using the pinsā€¦soldering to the exposed fold at the top, lot thicker there

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You might have issues with the flexibility being lost. Or, if it flexes, will it crack the solder off? I donā€™t know these answers.

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If it was me i would just spend the money and get a spot welder. The first time u make a battery will seem ridiclously expensive but the 2nd pack will be so easy and cheap and done properly!

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Iā€™m looking into it but holders will be the same cost as all the other supplies anyway and are hard mounted with easy replacement so itā€™s convincing either way

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I donā€™t think soā€¦the holders are cast ABS and rock hard, and the only think connecting them is wires that bend so it should be okay for a flexible deck

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I meant the spring steel that connects to the ends of the cells. The bend youā€™re talking about soldering to.

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Now that my pack is done i was hoping to calculate the watt hours of the pack but not sure how to do it. its 100 30Q batteries 10s 10p any help would be useful.

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Ohā€¦I think it will be okay, I can mount it on the flat

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image image

3Ah(30Q) * 3.6V(Rated) * 100cells = 1080Wh

https://calc.3dservisas.eu/

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sweet. now I know i have the power do destroy my house :joy: