How to restart a Samsung powerbot bms

Community Projects
1

Hello guys.

I replaced the 18650 batteries of the battery dj96-00193B of my powerbot.

After replacing them the bms is not starting so I have 0Volt on P+ terminal.

I tried to connect B- with P-, tried also B+ with P+ but nothing happened always 0volt on P+.

The heart of that bms is an chip 240080.

I found on internet a data sheet of RAJ240080 (it looks like the same of mine) in which is written: Reset by RESET pin (reset circuit output of AFE connected to RESETOUT). I understood RESETOUT is n. 29 and output AFE is n. 34.

Now my questions:

1- is it correct the 29 and 34?

2- have just connect those to reset the bms?

3- will I loose the stored data with that reset?

4- have I to connect the 29 and 34 with the charger attached to reset it?

Thanks a lot

Bye.

20240111_030328.jpg
20240111_030328.jpg4032×3024 3.15 MB

2

Thanks for your reply.

Do you have any idea about how to restart it?

I’m trying to put all the batteries to 3volt to see what’s up. I’m trying because with all the batteries to 4.15volt was not starting.

If you need on line there is a video of reverse eng. of a bms like mine. The video link is: https://youtu.be/aDvuYKJtomQ?feature=shared

Thanks for your support.

3

I attach here the datasheet that I found.

I checked and my fuseout (pin 19) is set to hi…

I changed back the batteries with the old one (I supposed could be the battery type the old were 2200mha instead the new are 3500mha), I connected from minus to plus following one video that I found but nothing.

My fuseout stayed on.

I tried to reset but nothing happened (I tried with charger on and charger off).

Please someone could help me?

Thanks

REN_r01ds0299ej0100-raj240080_DST_20171227.pdf (2.12 MB)

4

I’m guessing there was some sort of programming on your BMS that was lost when the old batteries were disconnected. Without that code, your battery it probably bricked. A lot of manufacturers are doing these kind of things now to force you into buying their over priced replacement parts. People should encourage their elected officials to ban these practices.

5

I detached all and reconnect the batteries from minus to plus with the charger attached to see if the fuse was tripping.

The fuseout this time is set to low.

I attached to the hoower just temp. as showed in the attached photo.

It seems to be charging but when I tested the battery pack stayed always to 19.77Volt

Now I saw same differences between the cells so I’m trying to equalize them.

I checked the pin CFOUT, DFOUT were both hi and Tool0 and CREG2 was also active (So the bms should stay in normal operation mode no in programming mode) but still no volt on P+ (also if the FUSEOUT was OFF).

I don’t think it lost the recorded datas, its memory should works like eeprom.

I’m trying with the cells equalized, but I don’t think it will solve.

If someone has a hint I can thanks him.

Hoower.jpg
Hoower.jpg3024×4032 1.82 MB