Posted by: @jardimdanilo

The same thing happened as on the notebook, it was about 80 when I saw it dropped to 6%

 Nice finding my friend. On laptop it dropped from 60 or 65 percent of charge. It means laptop consumes less then 1500mA of current. May be 1 amp. Anyway, continue discharge till 3v per cell. 

To know real battery capacity and to know if it could keep power for laptop below 60% of charge. 

@djibattworkshop ok, I'll let it go down, it's already at 1 percent and the cells are 3500, I'll wait

I think you explained it to me and I understood, so it said it had 1 percent, but in fact it had more charge now I'm going to charge it on the notebook, at least zero charge with the 3000 cells

 Basing on the log, battery run 2h 3min on 1.49A load. 

 It means its real capacity is 3060mAh. 

On 1A laptop load it will have slightly higher capacity, may be 3100 to 3200mAh. 

Referring to Design Capacity 7894mAh its State of Health is about 39% 

SoH = (3100 / 7894) * 100 = 39 % 

So you could see that this battery has lost more then half of its factory capacity. 

 Percentage is dropped from 80 to 7% because cells have very big internal impedance. 

You could see cells resistance is around 240 milliOhms. It is too much even for LiPo cells. They normally have 70 to 110 milliOhms in the new condition. But it is increased over time. 

When battery was new its SoC was about 7% at 3500...3600 milli volts. It is considered normal for LiHv 4.4v cells used in this battery. Their full range is 3.3 - 4.4 volts. 

But now their resistance is big enough, under the load voltage dropped to 3.6v quite fast. You need to learn Ohm Law to understand the physics behind it. 

Green area - normal percentage 

Orange area - low percentage 

Pink area - cells voltages level also known like EDV level at which RSoC was readjusted 

In order to fix this RSoC drop issue chip EDV profile should be reprogrammed to match increased resistance of used cells. 

This option is not supported by NLBA1 software but could be done by engineering tools. 

@djibattworkshop I understand it, I still have a lot to learn, it's not as easy as I imagined, but thank you, I'll test it here on the notebook, but I'm always grateful for the help you give me

I always print these tips and keep them to understand better, just to clear up doubts, what maximum resistance would it be to pass a good cell test in ohms value, what would you say, is this still good for use?

Posted by: @jardimdanilo

what maximum resistance would it be to pass a good cell test in ohms value,

 It is frequently asked question. It was discussed many times on the forum. Use search option.

Long story short - there is no absolute maximum value considered not usable. Cells resistance depends on many factors and varies in big range depending on cells type, usage history, cells load, temperature, relax period and so on. 

Even this battery still could be used if customer would be happy with 2h runtime instead of 5...6 hrs. 

But chip EDV profile should be properly reprogrammed to fit characteristic of used cells. 

Like a bonus for new customer me could reprogram this battery for you but generally we not provide such service because this option is not officially supported. 

@djibattworkshop I would appreciate it if you could do it and not interfere with your service, I would like it, because they both have the same defect.

send the dump to email 

@jardimdanilo as I can see in clipboard pic your battery cells are bad.  Check 2nd battery cell health in test TAB too if it shows same  then replace your cell or battery with newer .

 it was already explained to the customer that present battery capacity is just 38% of its factory capacity. 

 Anyway it keeps the power on 1.5A load for 2 hours and 3 minutes. If it is Ok for his client it still could be used after EDV profile reprogramming to prevent RSoC jump from 60 to 7 percent. 

@djibattworkshop I warned him that it was bad, the right thing to do would be to change it, but I could use it a little longer because the cells are very bad, he accepted, I'll play with it, I sent the file if I could repair it, thanks again

Just a doubt, these new cells are easy to buy, because here in Brazil I don't find them and when they do they are very expensive.

but I learned a great one today, now next time I know how to test cells, I was happy with the help