Actually you don't want to "re-peak" a LiPo.
Charging at 5A will just add time to the charge, the CC/CV portion of the charge will act exactly the same and cut off the charge when the battery is full. All amperage will do is affect the charge time.
The difference between 5A and 5.2A for a 5200 battery will barely be noticeable overall. Maybe to the tune of 5 minutes extra?
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