An Electric Scooter Community on a Mission to Stamp out Transportation Mediocrity.

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By Skupik
Posts
#54350
Hi

I’v managed to salvage some Tier Okai 400B external batteries.
Those are 47V 14.7Ah/690Wh batteries.
Made out of Samsung’s INR21700-50e cells in 13s config.
Battery itself is quite heavy, with big aluminium casing having a handle and a display on top -showing SOC%, battery Voltage and temperature.

On the top there is only a bunch of small cables connected to the LCD itself. To view images REGISTER or LOGIN for full access.

To view images REGISTER or LOGIN for full access.


On the bottom - we got MR60-M connector with common „+” and two grounding ports - one for load, and second for charging. Also a 5-pin communication connector.
To view images REGISTER or LOGIN for full access.


Everything held together with bunch of Torx security T10 screws. Very well waterproofed with two gaskets and extreme amounts of conformal coating silicone paste.


It’d be really hard to get the battery out from the case (because of the silicone) and access to the BMS, but I’ll try.

More pics will follow.
If anyone know how to wake the battery up using built-in BMS - please PM me.

To view images REGISTER or LOGIN for full access.


By Jesus
Posts
#54538
wow you're quite lucky to have these.
Can you confirm that the internal battery and the swappable battery are the same?

Thanks
Skupik wrote:
Sat Aug 14, 2021 12:42 pm
Hi

I’v managed to salvage some Tier Okai 400B external batteries.
Those are 47V 14.7Ah/690Wh batteries.
Made out of Samsung’s INR21700-50e cells in 13s config.
Battery itself is quite heavy, with big aluminium casing having a handle and a display on top -showing SOC%, battery Voltage and temperature.

On the top there is only a bunch of small cables connected to the LCD itself. To view images REGISTER or LOGIN for full access.

To view images REGISTER or LOGIN for full access.


On the bottom - we got MR60-M connector with common „+” and two grounding ports - one for load, and second for charging. Also a 5-pin communication connector.
To view images REGISTER or LOGIN for full access.


Everything held together with bunch of Torx security T10 screws. Very well waterproofed with two gaskets and extreme amounts of conformal coating silicone paste.


It’d be really hard to get the battery out from the case (because of the silicone) and access to the BMS, but I’ll try.

More pics will follow.
If anyone know how to wake the battery up using built-in BMS - please PM me.

To view images REGISTER or LOGIN for full access.


By iddik75014
Posts
#55014
Hi Skupik,

Are you showing on your pictures that battery ?

I have that one but I don't know how to take it off from the scooter :

To view images REGISTER or LOGIN for full access.


Could you please tell me how to proceed for extraction of the battery ?

Skupik wrote:
Sat Aug 14, 2021 12:42 pm
Hi

I’v managed to salvage some Tier Okai 400B external batteries.
Those are 47V 14.7Ah/690Wh batteries.
Made out of Samsung’s INR21700-50e cells in 13s config.
Battery itself is quite heavy, with big aluminium casing having a handle and a display on top -showing SOC%, battery Voltage and temperature.

On the top there is only a bunch of small cables connected to the LCD itself. To view images REGISTER or LOGIN for full access.

To view images REGISTER or LOGIN for full access.


On the bottom - we got MR60-M connector with common „+” and two grounding ports - one for load, and second for charging. Also a 5-pin communication connector.
To view images REGISTER or LOGIN for full access.


Everything held together with bunch of Torx security T10 screws. Very well waterproofed with two gaskets and extreme amounts of conformal coating silicone paste.


It’d be really hard to get the battery out from the case (because of the silicone) and access to the BMS, but I’ll try.

More pics will follow.
If anyone know how to wake the battery up using built-in BMS - please PM me.

To view images REGISTER or LOGIN for full access.


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