Engineer In Residence
Since lithium packs don't need (or want) regular true 100% SOC charges, you can set the "synchronize" at any level you want. For optimum longevity terminating at 94-98% SOC is a good option. That is typically 6% return current at between 14-14.2V. Each pack will vary, so you can do some testing to identify what that means for your pack.