I'm controlling the charger via a computer, I have attached a picture of its settings, the DC of the charger can't resist more than 4A. Cut-off peak to minimum 3mV, is ok?
Unfortunately the Super Bran charger are not sold anymore so can I achieve the same results with this one?
I need to be careful of the temperature, right? And if any of the cells reaches a given temperature then do I need to stop it or it can be ignored?

I have also built a grid charger and attached a picture of its plan. Can the effect be increased with it?

 

No, the SB989 isn't available anymore, but there are other chargers that are comparable or superior. The Turnity Reaktor 1000W or iCharger 3010B can discharge at 80W internally or 1000W regeneratively.

No, you can't get the same results. Discharging at <1A is much less effective than discharging at 10A or more.

I don't know what you mean "cant resist more than 4A".

Again, charge current should be 5.5. End voltage should be 6.00V UNLESS it's per cell @ 1.0V. Honestly, since the B6 is limited to 5W, you're not even going to see 1A of discharge. You can safely discharge to 0.8V/cell or 4.8V total.

Re-thinking the limitations of your equipment, it would also be better to charge ALL subpacks (12 cells) for 16 hours at 0.5A with a fan blowing on them to keep them cool. Terminate charge at 16 hours or 40°C. This will ensure that all cells are at true 100% SoC before you start cycling.

I'm a huge proponent of grid charging. You should reassemble pack and proceed as follows:

Grid charge for 25 hours with fan blowing through pack
Discharge with 60W bulb (100W if you're on 220V) to 106V
Grid charge for 25 hours with fan blowing through pack
Discharge with 60W bulb (100Wif you're on 220V) to 66V
Grid charge for 25 hours with fan blowing through pack
Discharge with 60W bulb (100W if you're on 220V) to 66V
Grid charge for 25 hours.
Install in car.
Drive.

The above should take 5-7 days and will give you results at least as good as the month or more on the B6.

Once you notice 2 recalibrations within the same 7 day period:
remove/disassemble pack
Allow it to sit for 3 days.
DISCHARGE each stick to document the capacity remaining.
Replace the outliers.

 

Can not charge at 5.5 A due to DC. Max 4A

 

Your explanation doesn't help. Are you saying that you're using a weak power supply that can't provide the needed 50W?


If that's the case, then you need to fix that. dV cut-off becomes less pronounced below 1C and can result in overcharging.


Regardless, it's a moot point. Reassemble your pack and use grid charging/discharging for reconditioning.

 

My power supply output: 15V/5.0A. But when I set the value above 4, b5 is written: DC in too low.
Why is not it good to charge with 4A?

 

Somewhere in settings is a cut-off voltage. Change it to 10.5V

 

I changed but did not get better.

 

I was wrong it can not take even the the 4A. Does it do any damage if I charge it with 3A? Or should I buy a stronger power source?

 

You can't count on reliable -dV charger termination at lower currents.

Either your B6 is defective, or your power supply is defective.

The discussion is unimportant now. You should be assembling your pack and fully reconditioning it with the grid charger and a light bulb discharger.

 

Which charger do you recommend? A dual one would be better.