Activating Thundersky LFP

Thundersky LFP cells require an "activation" charge cycle before discharging. James from evcomponents said "The max is 4.25 V Although you should only do that the first time for activation. After that 3.8 V should be the max. ".

The Thundersky "quality certificate" says:

"The electricity is half loaded when the batery produced, the battery cannot be discharged directly under any condition, and must be charged before first use. Please check and if the voltage is 4.2v means the battery is fully charged. If the battery is used in series there must be professional technicians to handle and required charger and BMS must be attached in use."

Then in a separate print out it says:

"Warning
Before first discharge the battery, please charge it to 4.2V with the constant current of 0.1CA~0.5CA and stop until the charging current falls to 1% of the original."

So, I have the Manzanita Charger set to 191V as the cutoff for 45 cells at 4.25 each. Below is a graph of the paktrakr data from the charging cycle for 8+ hours. The amps are X10 to fit on the same scale as volts. The small blip before the "hockey stick" is when I turned off the charger to go to bed and restarted it in the morning. The charger started tapering the amps at 191V and then the voltage dropped. I set the amps to 10A manually and then adjusted again at the end to 1A.