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felix_fetche
05-03-2017, 07:20 AM
Hi,

Here are one of the first results of my project:

https://www.youtube.com/edit?o=U&video_id=-oevROzBgAg

Intending to measure cells inside battery pack before to open the casing.

Be back with updates.
Felix.




Don M
05-03-2017, 10:50 AM
Your link doesn't work for me

Don

Pescador12
05-03-2017, 12:15 PM
Yeah, link doesn't work. I think it goes to his account's video edit page.

I have chargers that monitor each battery cell in an electric model but they are only two to six cells. Each cell has its own wires to a separate plug the charger can connect to for monitoring. So, the battery pack has a power plug and a monitor/balancing plug. The dozens of cells in a Segway do not have that kind of wiring so I wonder how they can check individual cells without a voltmeter put on each one (case opened).

Don M
05-03-2017, 02:51 PM
I would guess he can't monitor individual cells either - Probably only the 23 groups of 4 cells in parallel

Don

felix_fetche
05-04-2017, 03:41 AM
here is new link:
https://youtu.be/-oevROzBgAg

of course not each cell, but 23 groups,
(23 raw values, scaled , but for the moment not offseted, working on it...).
and:
-average temperature
-four temperature sensors,
-state of charge bar graph,
-chemistry and Rev.XX,
-statuses registers, and so on...



Be back with updates!

MTOBATTERY
05-08-2017, 11:47 AM
We have software that does this as well along with many other functions. It looks like your doing a great job so far!

felix_fetche
05-09-2017, 05:26 PM
Hiello MTO,

Is only a beginning, I'm working on it, now i have implemented a touchscreen TFT display, the 20x4 was very poor for this application.
Basically is about challenge an ambition to do that, but on the other side i really need this tool in my workshop. Will implement charge/discharge function to integrate the current and calculate the real capacity of the battery, useful function when i have to sort the best or weakest batteries from a lot.
be back soon!

felix_fetche
05-10-2017, 12:50 PM
https://youtu.be/VJa-NJ7qd3Q

New TFT Display implemented.
Next is the menu and a nice look, good page arrangement and alignment.
Most of the parameters are ready calculated and good to be displayed.
Cheers!

felix_fetche
05-12-2017, 04:03 AM
New graphics

Pescador12
05-12-2017, 01:16 PM
Nice display.

Take a look at the old Cellpro 4s lithium battery chargers FMA used to make (might still). It is just a circuit board with standoffs that hold a metal face plate/display with heavy clear shrink wrap around the whole assembly.

A nice sticker covered the face plate so it looked professional. No case needed (shrink wrap is the case) and easy access to the mode switch and cable connectors. I think that is how they made them when they were a start up.

Cellpro 4s pics:
http://www.bing.com/images/search?view=detailV2&ccid=Sf0Qbiv9&id=6A012D07601DFF2A09413855F494EE2C1C08DF98&thid=OIP.Sf0Qbiv9riF1nN2Q4_4oegEsDI&q=%2bFMA+Cell+Pro+4S+Charger&simid=608014877763766839&selectedIndex=4&ajaxhist=0

http://www.bing.com/images/search?view=detailV2&ccid=9d3blKjI&id=454235EED5EC3663E9F3D2D454DD053CF935186C&thid=OIP.9d3blKjIV_tJdoyij2eXMQEsBy&q=Cellpro+4S+Charger&simid=608049306245532227&selectedIndex=17&ajaxhist=0

felix_fetche
05-14-2017, 04:30 PM
New microcontroller bord, also new bigger TFT Display 480x320

https://youtu.be/2XMLpPcss3M

felix_fetche
05-19-2017, 01:27 PM
Pretty close to be listed on ebay.de
Need to find a discharge load.
Also to choose a good housing.
After some experince in .de will try worldwide.

Revive from deep discharge function tested and works, live data during revive!
mAh intergration during charge and discharge to retrive real capacity of battery.
Internal impedance and eqivalent dynamic serial resistance measurement with.
derivative echo of dv/di during instant discharge.
Fleet owners will have the posibility to sort batteryes to decide what to sell and what to keep
when sell older units!
Tool eqipped with 3xIFR18650-22P to use as a stand allone tool, good to use anywhre,
even in open field, just connect to battery plug and read voltages and others instantly.

Soon!

dorrington
05-19-2017, 01:51 PM
Exellent Work!

felix_fetche
06-13-2017, 03:38 PM
Hello,
I have verry good news for ones that revive AF to AJ packs,
Will offer tools in different ways on demand:
-just a simple passive monitor that displays 23 cells voltages and 4 tempratures
without ADC real pinout voltage. 500€.
-same as before but with ADC pinout measuring pinout voltage and courent discharge probe, fused, you may visualise the weak cell(s).
-tool with all protections imagined to full integration of coutent wille charge/discharge to calculate real internal static resistance and impdance of batt, also close to real mAh capaity of battery package.
-more registers values from BMS.


Communication protocols that I suppopt and can explain, are for sale now!

Rehards,
Ing. Felix Fetche

dorrington
06-14-2017, 03:40 AM
Great work Felix.

I wish you all the very best of luck

Philip
06-17-2017, 05:13 PM
Hi Felix

Your Battery Communications Utility looks like it is developing really well. This will be a really useful Utility for many people. The ability to determine the Battery Pack Resistance in the field will be helpful in determining whether a pack might be the cause of certain Safety Shutdowns and/or should be replaced because it is approaching end-of-life. Even more useful for businesses will be the ability to determine the full-charge capacity of an older pack.

All the best with getting your Utility completed.

felix_fetche
06-20-2017, 11:56 AM
Hi
I'm working on housing solution. Till then will finish some other needed functions.
One by one will to them all.

Today have finish with the four temperature sensors,
(needed for reviving from deep discharge function), see photos.

Next will be the charge/discharge 100Hz PWM switches.
I found interesting discharge load also.
Be back with updates!

dorrington
06-20-2017, 02:46 PM
Great stuff!

jeanpierre34h
07-09-2017, 05:02 AM
I like to know if the battery communication is with an I2C or SMBUS.
Is it 5v tolerant or only a 3.3V level ?
Where are the SDA and SCL on the 2 pins (side near the ground power pin).

felix_fetche
07-13-2017, 01:18 PM
Hello Mates,

I'm back from a busy period regarding automotive business. Will keep on going with the tool.
The problem is that I cannot find good prototyping housings.
Searching for a handheld box with batteries, also display window. I found something but not as expected.

cheers!

felix_fetche
12-07-2017, 07:46 PM
https://www.youtube.com/watch?v=F-0bin_C7x4&feature=share
New job

martinbogo
11-23-2018, 10:53 PM
Hey all...

I've been on the sidelines for a few years... but with the rise of the various e-Scooters and NineBot/Segway starting to ramp down the balancing scooter business in favor of the smaller "Mini Segway" the time for closed-source solutions is coming to an end.

Felix, I know that you've put a lot of work into your battery analyzer, and I think it's going to be a great one-stop device for people who want something that "just works!"

The Segway original, i2, x2 market is small, and we need more general purpose and inexpensive tools to let people quickly diagnose their cells, and to let people build compatible cells using Li-Fe batteries ( and if they are so inclined, the more dangerous but more power dense Li-Ion cobalt cells. )

For people who are curious about the I2C protocols and how to communicate with the battery for DIY solutions, or to make projects on the Arduino and with a Raspberry Pi board... I'm going to release an open-source project on GitHub and a set of libraries to talk to the cells along with a BOM and Gerber files sometime in mid to late January.

Since I likewise independently spent the time to reverse engineer the battery I can choose how to proceed with what I've learned. I choose to give it away with an open source license and open source hardware to let others build on that knowledge.

Good luck! See you all in 2019. Code will be uploaded to:

https://www.github.com/martinbogo/i2-battery-diagnostics

2576

dmurphy
11-25-2018, 05:33 PM
Hey all...

I've been on the sidelines for a few years... but with the rise of the various e-Scooters and NineBot/Segway starting to ramp down the balancing scooter business in favor of the smaller "Mini Segway" the time for closed-source solutions is coming to an end.

Felix, I know that you've put a lot of work into your battery analyzer, and I think it's going to be a great one-stop device for people who want something that "just works!"

The Segway original, i2, x2 market is small, and we need more general purpose and inexpensive tools to let people quickly diagnose their cells, and to let people build compatible cells using Li-Fe batteries ( and if they are so inclined, the more dangerous but more power dense Li-Ion cobalt cells. )

For people who are curious about the I2C protocols and how to communicate with the battery for DIY solutions, or to make projects on the Arduino and with a Raspberry Pi board... I'm going to release an open-source project on GitHub and a set of libraries to talk to the cells along with a BOM and Gerber files sometime in mid to late January.

Since I likewise independently spent the time to reverse engineer the battery I can choose how to proceed with what I've learned. I choose to give it away with an open source license and open source hardware to let others build on that knowledge.

Good luck! See you all in 2019. Code will be uploaded to:

https://www.github.com/martinbogo/i2-battery-diagnostics

2576

Thank you!! And I, for one, can’t wait to see the bits. Ready to have some fun with this!

Philip
11-25-2018, 05:53 PM
It will be interesting to see what other inventors come up with by using the information that Martin releases.

Also, I am really hoping that Felix is able to bring his ready-to-use device to market soon, because an analyser that can be used in the field will be most useful.

felix_fetche
11-29-2018, 12:46 PM
Hi,
The tool was ready to be sold starting from May 2018.
I sold some units, also have on stock, booth versions,
Quick Reader, and the Advanced Capacity Tester that includes forced voltages equalizer, Battery health, and internal resistance measurement.
Now i’m learning the Microsoft visual studio to create PC application to
make a nice window to monitor on pc or laptop same data as on tool display,
but more friendly and more display data, also nice graphics and printout
paper as an official data regarding individual tested capacity.
This weekend i will post on youtube the new update of the tool.
Cheers M8’s!

felix_fetche
11-29-2018, 12:55 PM
This is the analyser, a stand allone self powered unit, Best for use on open field,
whre no power supply available:

https://www.olx.ro/oferta/testere-baterii-segway-i2-si-x2-li-fe-rev-af-aj-IDbIlAh.html

The advanced tool ballance battery and get it back to green-flash led where the
default segway charger returns red light ic cannot revive one or more cells with voltage
under expected voltage, even revivable and not defective cell(s).
My tool help and insist to revive to 3,42V sofar with big rate of success.

felix_fetche
11-29-2018, 01:13 PM
by the way, dear martinbogo,
The serial nr of battery displayed at the bottom of your printscreen is in my
opinion simply arbitrary example, look:
C01071600611 means,
Date of birth january 7’th year 2016 in that date batt nr 611 out of the
producției line.

-batts of 2016 all are at least Ref.AJ or higher.
-611 is over daily capacity.

Maybe is only a simulation, or your tool not retrive correct data from BCM.

felix_fetche
12-13-2018, 06:21 PM
I can offer base-stone info and valuable know-how info of my i2c battery bcm diagnosys project, in exchange of CU schematics, or basic drowings of CU board.
Best!

Retro_Rich
01-09-2019, 02:48 PM
Hi, any update? I have a 14S3P pack that's dropped to 1.18v per cell or some cells could be dead, (reads 16.48v total) do you think it's revivable ?

krex4
01-15-2019, 05:42 AM
Hello folks, i am also interested on the project, i will build one, :)

Thank you all and,
Best regards.

dorrington
01-15-2019, 03:18 PM
I use pic micro for my reader..

martinbogo
01-15-2019, 07:17 PM
by the way, dear martinbogo,
The serial nr of battery displayed at the bottom of your printscreen is in my
opinion simply arbitrary example, look:
C01071600611 means,
Date of birth january 7’th year 2016 in that date batt nr 611 out of the
producției line.

-batts of 2016 all are at least Ref.AJ or higher.
-611 is over daily capacity.

Maybe is only a simulation, or your tool not retrive correct data from BCM.

Just an error in my math when I was working on the initial code. I've been working on the project on and off since November. The local Segway dealer here in Austin went out of business, so my access to batteries has become more limited.

I do have one good working battery on my workbench, and I need a little more time in the lab to finish a basic working tool to simply read all the cell voltages, serial number, etc.

krex4
01-17-2019, 05:15 PM
Hi everyone,
On this site i found some interesting software:

http://www.pukshofer.com/Firma/download.htm

It is from germany, and they dis a interesting hardware to recover batteries and test them.

I am searching now a i2c to usb interface, using a arduino , maybe someone have a sketch to help me to connect battery to the software.

Regards,

felix_fetche
01-21-2019, 04:28 PM
All the know-how is for sale.
Also ready to use testers on stok, between 500-1000€, depending on options choosed by buyer.
I have also do it your self, economical version, without housing, here is one i sold few weeks ago in Germany, and buyer build one housing and is using the tool pretty happy. Can read even SN# from boards or batteries without bar code and sn# writing

https://www.ebay.de/itm/Segway-Akkuplatine-BMS-/192793264126

Contact me and have fun!

Retro_Rich
01-21-2019, 04:50 PM
So how much is the 'DIY' version to the UK? For Xiaomi mini plus?

felix_fetche
01-21-2019, 05:40 PM
https://youtu.be/YHkUdpllZM8

Here is

Retro_Rich
01-22-2019, 04:47 AM
That didn't answer my question... looks good btw

felix_fetche
01-24-2019, 02:54 PM
Hi,
Is a stand allone tool, as you see in video.
No need any extra device as display.
Price is negociabile now.
Call me +40 744 503 680

felix_fetche
01-24-2019, 06:31 PM
https://youtu.be/xuxQqa_bHNw
Now new update to be compatible with Gen.1 batteries Rev.AB, AC and AD, tested, new algo for SN# and Revision Type,
will make new video for old Lithium Gen.1 batteries in action.

martinbogo
01-26-2019, 02:48 PM
Thanks to Segway Nation here in Austin, I once again have access to good and red-light batteries, and development continues. I now have Rev AF, AH batteries, and am trying to get my hands on a NiMH battery that still works.

I have updated the pinout on the GitHub image, and am working on weekends to make a breadboard and basic 2-layer gerber/drill file set you can send to 4PCB, ExpressPCB, OSHpark ( etc ) to make an arduino "shield"

I also now have a working 3D STL file so that you can get a connector printed and not have to find the rather hard to get one, and so that you can connect to the battery without having to resort to testing clips.

( It's for development and testing, not for high-current application! Don't use it if you're going to be drawing full voltage from the cell or to charge the cell )

Thanks for your patience Y'all!

For those starting hacking on the cell -- first available i2c bus device is at address 0x31.

dorrington
01-26-2019, 03:10 PM
Nice work,......the stls would be nice....

Good stuff.

Retro_Rich
01-26-2019, 05:28 PM
Nice, have you done anything with the Ninebot plus battery?

felix_fetche
01-27-2019, 01:02 PM
Maybe a good oportunity to go forward with Ninebot plus battery tester ?
Now my segway battery tester project is finalized 99,99%, only customizing or diferent hardware versions could be subject of change, communication and registers meaning is close to finish, maybe there are some statistical data or errors registers, calibration registers, but not important sofar for common diagnostics.

What kind of BCM is in Ninebot plus battery? Photos?

martinbogo
01-28-2019, 03:28 PM
Nice work,......the stls would be nice....

Good stuff.

Thank you... I'm testing the connector now. It just uses some pretty common connectors, and I've printed it out in PETG and ABS so far. The design I'm using now is a little delicate, but at least it puts all the pins in the right place.

I don't recommend PLA due to the low temp and relative brittleness... ( I found that out the hard way )

Github repository is at:

https://github.com/martinbogo/i2-battery-diagnostics

martinbogo
01-28-2019, 10:11 PM
The Segway battery exposes interesting data on the following registers on i2c when read in the same way as the battery voltage values ( 3 bytes read, discard first byte, data encoded on 2nd and 3rd byte )

Register 12 ( 0xC ) reads 31 triplets. Byte 0 ( unknown ) , Byte 2 counts from Hex 0 -> 1E, Byte 3 ( unknown )
Register 204 ( 0xCC ) reads 31 triplets. Byte 0 ( unknown ), Bute 2 counts from Hex 0 -> 1E, Byte 3 ( unknown )
1st and 3rd values repeat after 31 reads, both registers show the same data

Register 198 ( 0xC6 ) reads 37 triplets. Byte 0 ( unknown ), Byte 2 counts from Hex 0 -> 25, Byte 3 ( unknown )
1st and 3rd values repeat after 37 reads

Example of the data - register number in <>, values in hex

<12> [C3:0:B0] [F1:1:1] [BE:2:33] [3F:3:31] [37:4:38] [3A:5:34] [C:6:61] [34:7:38] [A8:8:43] [27:9:43] [A6:A:43] [25:B:43] [37:C:30] [33:D:33] [A3:E:42] [A2:F:42] [21:10:42] [20:11:42] [31:12:30] [2D:13:33] [3F:14:20] [3E:15:20] [3D:16:20] [3C:17:20] [BB:18:20] [BA:19:20] [B9:1A:20] [83:1B:55] [82:1C:55] [D5:1D:81] [DC:1E:F9]
<204> [C:6:61] [34:7:38] [A8:8:43] [27:9:43] [A6:A:43] [25:B:43] [37:C:30] [33:D:33] [A3:E:42] [A2:F:42] [21:10:42] [20:11:42] [31:12:30] [2D:13:33] [3F:14:20] [3E:15:20] [3D:16:20] [3C:17:20] [BB:18:20] [BA:19:20] [B9:1A:20] [83:1B:55] [82:1C:55] [D5:1D:81] [DC:1E:F9] [C3:0:B0] [F1:1:1] [BE:2:33] [3F:3:31] [37:4:38] [3A:5:34]

<198> [AA:0:4F] [F7:1:1] [45:2:32] [46:3:30] [3C:4:39] [3E:5:36] [3C:6:37] [42:7:30] [41:8:30] [40:9:30] [BF:A:30] [3D:B:31] [2C:C:41] [24:D:48] [BA:E:31] [BA:F:30] [38:10:31] [38:11:30] [AE:12:39] [32:13:34] [2E:14:37] [A1:15:43] [33:16:30] [B1:17:31] [31:18:30] [AA:19:36] [AE:1A:31] [AA:1B:34] [2D:1C:30] [2C:1D:30] [AB:1E:30] [21:1F:39] [A1:20:38] [83:21:55] [2:22:55] [5E:23:F8] [27:24:AE] [D4:25:0]


Register 23 ( 0x17 ) reads 4 triplets. Byte 0 ( unknown ), Byte 2 increments 0x1,0x11,0x21,0x31, byte 3 ( unknown )
Register 215 ( 0xD7 ) reads 4 triplets. Byte 0 ( unknown ), Byte 2 increments 0x1,0x11,0x21,0x31, byte 3 ( unknown )
1st and 3rd values repeat after four reads - these are likely the temperature readings on two registers

<23> [7F:1:68] [F3:11:64] [4E:21:79] [4A:31:6D]
<215> [7F:1:68] [F3:11:64] [4D:21:7A] [4A:31:6D]

This data parses to the following binary:

0001 0001 0110 0100
0010 0001 0111 1010
0011 0001 0110 1101
---- Measurement index nibble
-------------- Possible A/D conversion of the temperature ( 12 bit, or 10 bit? )

If this is the case, this looks similar to a Texas Instrument 12 bit ADC converter, and you take the 12-bit value and multiply it by 0.0625 to get the temperature in Centigrade.

Taking the example data :

0b000101101101 = 365
365*0.0625 = 22.81 centigrade -- which is plausible for the temp in my lab

And of course, registers 150 (0x96) and 86 (0x56) contain the battery voltage data encoded as:

Byte 0 (checksum) : Byte 1, Byte 2 are the MSB and LSB of a 16 bit integer. Top 3 bits are the battery index. Lower 10 bits are A/D converted battery voltage data, where each tick represents 8 volts / 1023 steps.

martinbogo
01-30-2019, 06:07 PM
I have uploaded the STL file for a quick and simple to use battery connector. You will need a set of standard breadboard leads ( the ones with the square ends, about 1.6mm square ) which you will use as the pins.

Cut a long lead in half ( or remove the cable from the pin connector ) and thread the lead up through the connector. Seat the square pin holder into the square holes provided on the bottom.. you should be able to press fit them.

https://github.com/marti.nbogo/i2-battery-diagnostics/blob/master/battery_connector.stl (https://github.com/martinbogo/i2-battery-diagnostics/blob/master/battery_connector.stl)

For the + and - connectors, use nails that are slightly under 2mm in diameter and at least 30mm long. Epoxy or superglue them into place.

Print settings that worked for me are:

200 micron layers
25% infill ( grid infill is fine )

2585
2588
2589
2590

felix_fetche
02-04-2019, 05:58 PM
New cheap do it yourself kit

https://www.facebook.com/1211508475/posts/10214259733626538/

Ship almost worldwide !

felix_fetche
02-07-2019, 06:28 PM
https://www.ebay.de/itm/Segway-i2-X2-Gen-2-Battery-Tester-DIY-kit-without-housing-/323681953309

One item sold yesterday

martinbogo
02-21-2019, 04:54 PM
I have now decoded most of the important information on the i2c bus of the Segway i2/x2 Lithium batteries. This technique should also work for the older NiMH batteries.

https://github.com/…/i2-battery-diagn…/blob/master/README.md

Summary:

The serial number has been located!

The checksum algorithm has been decoded!

Here's the quick summary:

For registers that are read as triplets ( temp / voltage / serial number ) a 3-byte packet is read in the following order:

[checkum] [ most significant byte ] [ least significant byte ]

In order to make sure the packet was transmitted properly, the checksum algorithm is simple -- add the three values up, and take the modulus 8 of the sum. If the value is equal to 1, the packet is valid.

i.e.:

[ 2D ] + [ 1C ] + [ 30 ] = 0x79 0x79 & 8 = 1

The packet is valid and was transmitted properly.

I am rewriting the code with a generic packet reader, which will check for i2c bus errors and the CRC, then return a PACKET struct containing the calculated checksum, and the three bytes ( everything reads 0xFF if there was an error )

--

The serial number is in plaintext ASCII, located at register 0xC6 (198)

Revision are the bytes stored in 0xC-0xD [ AH in the sample data below ] Serial number are the bytes stored in 0x15-0x20 [ C01061400098 in the data below ]

10101010 00000000 01001111 AA 0 4F
11110111 00000001 00000001 F7 1 1
01000101 00000010 00110010 45 2 32
01000110 00000011 00110000 46 3 30
00111100 00000100 00111001 3C 4 39
00111110 00000101 00110110 3E 5 36
00111100 00000110 00110111 3C 6 37
01000010 00000111 00110000 42 7 30
01000001 00001000 00110000 41 8 30
01000000 00001001 00110000 40 9 30
10111111 00001010 00110000 BF A 30
00111101 00001011 00110001 3D B 31
00101100 00001100 01000001 2C C 41 __A__
00100100 00001101 01001000 24 D 48 __H__
10111010 00001110 00110001 BA E 31
10111010 00001111 00110000 BA F 30
00111000 00010000 00110001 38 10 31
00111000 00010001 00110000 38 11 30
10101110 00010010 00111001 AE 12 39
00110010 00010011 00110100 32 13 34
00101110 00010100 00110111 2E 14 37
10100001 00010101 01000011 A1 15 43 __C__
00110011 00010110 00110000 33 16 30 __0__
10110001 00010111 00110001 B1 17 31 __1__
00110001 00011000 00110000 31 18 30 __0__
10101010 00011001 00110110 AA 19 36 __6__
10101110 00011010 00110001 AE 1A 31 __1__
10101010 00011011 00110100 AA 1B 34 __4__
00101101 00011100 00110000 2D 1C 30 __0__
00101100 00011101 00110000 2C 1D 30 __0__
10101011 00011110 00110000 AB 1E 30 __0__
00100001 00011111 00111001 21 1F 39 __9__
10100001 00100000 00111000 A1 20 38 __8__
10000011 00100001 01010101 83 21 55
00000010 00100010 01010101 2 22 55
01011110 00100011 11111000 5E 23 F8
00100111 00100100 10101110 27 24 AE
11010100 00100101 00000000 D4 25 0

Currently known fields:

Voltage for all 23 cell groups
Temperature from 4 temperature sensors
Serial number of the battery
Revision of the battery

Total voltage in battery ( by adding all cell groups together )

Still working on finding/decoding:

Battery state of charge
Battery current amperage drain/charge

felix_fetche
02-28-2019, 07:54 AM
register 29, contains soc means "state of charge"
register 212 contains amp means charge/discharge current


soc=(int)((k_avg_soc*raw_avg_soc[2])/254);
if(summ_volt<76.5 && raw_avg_soc[2]==254) soc=0; //Case of Under Level SOC

amp=(256*(raw_avg_amp[1])+raw_avg_amp[2])/k_cell_amp;

float k_avg_soc=100;
float k_cell_amp=128;

Have FUN mates!

plarss222
03-24-2019, 06:05 PM
Hi Peter here,

Anyone knows if there is a register to adress only a bad cell to charge only that one?

Best Regards

Peter

felix_fetche
04-24-2019, 04:26 PM
Offer this:

https://www.ebay.de/itm/Segway-i2-X2-Gen-2-Battery-Diagnosetester-Diagnosys-Tester-/323752997729

Also ship to US !

shmonoff
05-23-2019, 06:55 PM
Hi Peter here,

Anyone knows if there is a register to adress only a bad cell to charge only that one?

Best Regards

Peter

You can't charge one particular cell, they are grouped by 8 and I'm not sure whether the controller is able to charge one group only.

dorrington
06-01-2019, 05:32 AM
As far as I know the only way to charge just one bank of four cells is to open the battery and use a life charger on the solder terminals.

Normally it's one bad cell making the group go low..the only is to find bad cell and swap it unless you're very lucky....

Good luck

felix_fetche
08-08-2019, 09:16 AM
https://www.ebay.de/itm/323818364778

https://www.ebay.de/itm/323877822832

Moejaahied
11-21-2020, 02:35 AM
Hi Felix,

What products/software do you have available for the above 72v Lithium ion battery packs?

Regards