OKAI ES-400 Battery Connector

[Marcel_HAX]

Hi, I have a few ES-400 Batteries wich I want to use. But the problem is, that I dont know how to connect them because they need a unlock voltage to a pin. But I cant find any documentation on this connector.

[alpha-b]

hello you have to open the battery and make a shunt between two mosfets

[Marcel_HAX]

Thanks! Do you have any tips on how to get this grey fill material out of there?

[tempmail]

Thanks! Do you have any tips on how to get this grey fill material out of there?

Hi!
I recovered a battery of ES-400 as well. I also found out how to activate the output, or how to charge it.

So far I just charged the battery with a 54.6V power supply and everything went well. Here's what I now know about this connector:


I now want to try to communicate with the BMS, but I don't have any info to do so. Would you have been able to remove this green paste? If yes, you would have info about the BMS ;) ?

I briefly tried to take the battery out of its hull but without success.

EDIT : Power is cutting of after few seconds when I push more than 20-40 watts. On the screen we can see "error 31"

[jfaofezahj]

Up !
Does anyone have experience on using ES400 battery without its controller ?