Me neither mate and for the same reasons.
Charge only BMS every damn time
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Iāve got one of these in my build! Mind you not the exact same model but itās this antbms
https://s.click.aliexpress.com/e/dZUgKXkZ5
Havenāt had any massive issues with it yet performs fine lots of settings to mess around with.
The 2 issues I have come across are a little annoying tho. First off one temp sensor was broken displaying - 30 which didnāt allow the battery to charge (thereās overrides to disable the temp protection and Iām sure itās a 5 cent replacement sensor but sucks either way).
But the bigger issue is I canāt get the precharge ciruict to properly work, no issues turning off the discharge mosfetās but when trying to turn it on again the Vesc begin to flash but never properly boot up and the bms gives an error saying the precharge failed. Theres a precharge current adjustment in the settings but no luck fucking around with that.
So basically you canāt turn it off and on via Bluetooth without a loopkey which is annoying for myself as I prefer to run charge port only boards 
But it by far has the widest range of settings in the app and a 200mAh balance current which is nice.
As far as BMS and cut outs go Iāve never had any overspecced discharge BMSās Iād say 99% of issues with bms are because they arenāt designed for our applications and the factory settings are to conservative or incorrect.
When youāre able to adjust pretty much all the bms settings to whatever your liking you can gear your battery to be as agressive as you like.
Edit: added some app pictures. There seems to be a cleaner English translated app that came out recently havenāt been able to find it yet however.
App is called MaYi bms
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Excellent post dude 
Im definitely gonna run mine as a bypassed discharge setup but running accessories. Just gotta wait til it gets here now so that I can tinker with it.
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How did you find out this info? Super important and the first Iāve read of this. Digging for the source so I can cross reference other similar models.
Dude on battery building group who has used these before
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Did some of you guys test the 20S 400A ANT, or know what the continuous current is?
Iāve decided to use mine as an external charge only BMS, so will never get the chance to test discharge current
Yeah I used to have the continuous 100A version on my 30q 12s6p. I stupidly had it on discharge too and it would cut off all the time from over current.
Bought that one by mistake, I would like to sell it but I am afraid Iād loose too much money with shipping.
FML
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Lol im in the same boat, if anyone wants the 200a version I would be happy to sell it, got a 20a 50.4v charger that I would happily sell to and put the proceeds towards a balance charger
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Can I see the charger please?
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Maybe someone wants to tradeā¦
longest shot
BN 184mm hanger and a pair of his precision clamps + mounts would be sweet
long shot
but open to propositions
when you connect to that bms it has an error code terminal like the vesc tool has so you can see exacly whats wrong without taking your enclosure off
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AU $210.02 | 50.4V 20A charger for 12S lipo/ lithium Polymer/ Li-ion battery pack smart charger support CC/CV mode 4.2V*12=50.4V
https://s.click.aliexpress.com/e/lUMNR41S
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That thing must charge really fast.
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Yeah i get the advantages, but I just donāt have room for it on the board.
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Its a slow charger for my 12s13p 
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LOL I charge my 4P pack at 2A and kinda feel like its fast never tried higher so 
Yours must take less than half an hour.
Never used it so I couldnāt say, but it would only be charging at just over 1.5c so kinda slow
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Does ist come with the European plug?
And for how much are you willing to sell it + how much would be the shipping to Germany?
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