Can you provide the entire user manual link or attached pdf.
What I could find indicated the battery might also have an RJ12 (phone size) connector as well).
Since you referenced the pbms tool could you provide a screenshot of the software.
SunGoldPower and SOK batteries also use the pbms tool if it is the same one as you referenced.
With the SGP and SOK batteries the cable is an RS232 to USB cable so I just want to make sure in my response