Whether a good portable charger will damage the circuit board depends on the connection method that will be added later.
1. Parallel connection
If the battery is added to the charging treasure in parallel, the output voltage of the battery pack will not change, but the total capacity of the battery pack will increase.
In this case, it has no effect on the circuit board, that is, the boost protection board of portable charger.
2, series connection
If the battery is added to the charging treasure in series, the capacity of the battery pack will remain unchanged and the output voltage of the battery pack will rise.
In this case, the normal operation of the circuit board, that is, the boost protection board of portable charger is greatly affected.
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