Toughbook CF-53 battery-mod to 15x 18650 cells.

I replaced cells in the battery of my old CF-53.
I had 2p3s of some red li-ion-cells.
Now i have 5p3s of new Samsung INR18650 29E.
6 of them are in the hdd-caddy and instead a hdd i use a SSD now.
It works fine and now i can use the notebook the whole day somewhere in the wood.
But windows shows the wrong values of the battery. It goes to little values and hold very long by 10%.
With BatteryInfoView i can see the real values of this battery, but how i can change any values?

Code:

Description Value
Battery Name CF-VZSU72
Manufacture Name Panasonic
Serial Number 00526
Manufacture Date 
Power State Discharging
Current Capacity (in %) 10.0%
Current Capacity Value 442 mAh
Full Charged Capacity 4.432 mAh
Designed Capacity 4.030 mAh
Battery Health 110.0%
Voltage 11.256 millivolts
Charge/Discharge Rate -9.480 milliwatts
Chemistry Lithium Ion
Low Battery Capacity (1) 161 mAh
Low Battery Capacity (2) 362 mAh
Critical Bias 
Number of charge/discharge cycles 0
Battery Temperature 
Remaining battery time for the current activity (Estimated) 
Full battery time for the current activity (Estimated) 
Remaining time for charging the battery (Estimated) 
Total time for charging the battery (Estimated)  

 

post photos and info on the battery mod please.

run battery recalibration to reset the battery meter.

some of those values are on the battery prom which would need flashed to new values.

 

It is too late for fotos, because i have to disassemble the notebook again only for fotos.
But believe me 6 x 18650 cells fits into the hdd-caddy without any problems.
Then i have no balancer or other electronic for the cells in the hdd-caddy.
I just have 4 cables (- b1 b2 +) and connectet it with the standard battery (where i replaced the original 6 cells agains 9 cells).
I run battery recalibration two times, but i don't know it becomes better or not.

Sorry for my bad english.

 

Without knowing exactly how and where you connected it to the original battery connectors, I can't be of much help.

So you eliminated the electronic pcb from the original battery?
Did you wire in series or parallel to keep the voltage the same as original battery?T

 

I thought this information is too simple and needn't to be described.
But i understand you now.
Because i can not make fotos at the moment, i will try to describe it.
I have the original battery with the original electronic pcb. There was 6 cells, but enough place for 9.
So i replaced the 6 cells against 9 new cells. I keep the original electronic without any changes on it.
So the old configuration was 2p3s (2 cells in parallel and of them 3 in series).
Then i put 2p3s of new cells in the hdd-caddy and wire it parallel to the the cells in the battery.
For this i need four wires: +, - and two from the middle (b+ and b-).
So from 2p3s in the caddy and 3p3s in the battery is together 5p3s.
If this is still not understandable, i could draw a schematics tomorrow.
In the hdd-caddy if you look on it from the front you can see the sata-connector and two holes right and left from it.
And exactly here i put the wires. Then this four wires goes over the whole notebook to the end of the original battery. Not to the connector, but to the other end (i dig a big hole in the plastic and soldered the four wires to the other cells). Disadvantage of this battery-mod is that if i want to replace the SSD i have to disassemble the whole notebook. Bytheway the SSD have place over the original hdd-caddy (if you use the toughbook normaly then you see the touchpad and then three centimeters to the left and under the plastic is the SSD.

 

Schematic would be great.
I do understand what you did now.
The issue is that the battery citcuit board has prom or eprom memory on it. It keeps track of the charges and discharges. That circuit board thinks you are still using the old battery.
Unless you reset the eprom chip it will always stay that way. They even seem to be set to mark the.battery bad after a set time or usage count.
We have tried replacing cells in dead batteries and it wont work.

 

Everything work fine. I have only a false notivication about left %. I can live with it.

I am not a software-freak, but a hardware-freak.
I thought if there is a program like BatteryInfoView what can read some values from a battery, so there must be a another program which can write values to a battery.

Of course i could replace the battery built-in electronic. But against what?


From today:

Code:

Battery Name CF-VZSU72
Manufacture Name Panasonic
Serial Number 00526
Manufacture Date 
Power State Discharging
Current Capacity (in %) 5.0%
Current Capacity Value 251 mAh
Full Charged Capacity 5.035 mAh
Designed Capacity 4.578 mAh
Battery Health 110.0%
Voltage 9.909 millivolts
Charge/Discharge Rate -26.500 milliwatts
Chemistry Lithium Ion
Low Battery Capacity (1) 183 mAh
Low Battery Capacity (2) 412 mAh
Critical Bias 
Number of charge/discharge cycles 0
Battery Temperature 
Remaining battery time for the current activity (Estimated) 
Full battery time for the current activity (Estimated) 
Remaining time for charging the battery (Estimated) 
Total time for charging the battery (Estimated)

 

You need the software to reset the existing chip for the batteries.
Then probably a hardware chip programmer.
We don't have the software. I wish we did .
The problem with replacing the entire battery pcb is that the motherboard communicates with the battery. Anything other than Panasonic codes/firmware and the motherboard will probably refuse to charge the battery.

 

You've made a bomb. Heavy and dangerous bomb ))

 

I missed that graphic earlier.
The battery you modded is the smaller capacity one. Hence the 6 cells. A vzsu46 has 9 cells and probably a different charging pattern in firmware.

 

Yes. I know. I should take a original 9 cell battery. Maybe next time.

A bomb? Why do you think so? It is still the same original battery, but with more cell. The charge and discharge current is still the same and only this is important.

 

Lithium ion cells are explosive.

This