I have a Janty KB with passthrough that includes a battery. For several months, I saw no performance difference between KB with regular KB battery, and the passthrough with battery - excellent vapor with both. The passthrough battery finally died - wouldn't hold a charge. I ordered UltraFire TR10440 3.6V batteries, but did not order the charger for them as I understand that the USB connection is supposed to keep the battery charged as you puff away. Performance with the passthrough now sucks even after leaving the USB plugged in all day (to a powered USB hub). Very weak vapor for a very short period of time. Acts as though the battery never received a full charge.
Question: Do the passthrough batteries need to be fully charged initially with a regular charger?
Note: Had the exact same experience (at the same time) with a 4072 penstyle and passthrough with battery. I think my APC battery pack crapped out and caused the original passthrough batteries to become fully discharged.
Question: Do the passthrough batteries need to be fully charged initially with a regular charger?
Note: Had the exact same experience (at the same time) with a 4072 penstyle and passthrough with battery. I think my APC battery pack crapped out and caused the original passthrough batteries to become fully discharged.