New converter PD4655 doesn't go into boost mode Part 2

you have a long way to go
batteries will be fully charged when charging at 1-amp at 14.4v

10 amps into that pair of 6v, you have some ways too go
the only way to get an idea of SOC is an SG reading of all 6 cells

10 amps at 13.8v from a pd 45 is not an indicator of bad PD

if you get to 1 amp at 13.8v with solid green led
then the PD is malfunctioning or there is too much resistance in the charge path