I got this esc that I think does at least 200 battery amps:
Do I need a bms that will do 200 amps or can I discharge around the bms somehow?
Was going to get one of these.
https://m.aliexpress.com/item/2251832689656479.html?spm=a2g0n.store_m_promotion.promotePruductList_2002877185167.32875971231&gatewayAdapt=Pc2Msite4itemAdapt
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Just get any basic Daly BMS and bypass discharge. Then set the proper battery values in Vesc Tool.
4 Likes
Ok as long as it can do the right amount in series good enough? And for charging do I need to keep under the max charge rate still?
What max voltage would u do with this esc Knowing will do high regen?
? ?? Whst voltage u think max I should do?
frame
June 27, 2022, 4:27am
#6
as long as u donât exceed 75v (also account for the voltage spike), then it will work
its recommended u donât go near what the bms is rated for, for example, a 20a charge current bms, u will charge at around 15a.
16s liion max
3 Likes
If I do 18s (lifepo4) can I use a 20s bms? Thereâs no 18s available
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frame
June 27, 2022, 4:39am
#8
there is
ohhh wait, u want lifepo4, there is also 18s version for it
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The esk8 hub lord is having trouble picking up a BMS?
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I donât know if thatâs a compliment or not but Iâve never used one and always balanced off board.
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I was just surprised that someone who stuck around this long havenât gone through the nitty gritty details of building a battery pack. No offense intended
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Ive made many batteries. I just bought 3000 cells earlier this summer. Iâve never done a bms though.
But as soon as I figure how to bypass the bms when discharging⌠I think Iâll be ready. ?
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frame
June 27, 2022, 5:55am
#14
honestly, thatâs the easiest part, just two wires, one from negative, and one of the highest series positive, solder to connector for esc, then u have a bypass
2 Likes
So whatâs the difference from not bypassing?
So take a wire from the high positive cell and not from the bms?
frame
June 27, 2022, 5:58am
#16
not bypassing means ur current goes through the bms, and depending on the parameter of the bms, it has the ability to cut off current, which shuts down ur esc
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I mean whatâs the difference in wiring?
If bypass I take the highest positive cell wire and not the bms wire to go to esc?
frame
June 27, 2022, 6:01am
#18
i think thatâs correct, i donât have the diagram on hand, but it should be correct
battery builder club people might be able to answer that
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Positive and negative directly from pack to VESC, and only run the charge port through the BMS
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I have masters degree in fine arts!
Lemme share my triptych.
This one is titled âNo Bypassâ.
This one is called âThe Bypassâ.
This one is ughhhâŚ
6 Likes
Awesome. Just what I needed thanks.