Actually, no. Remember, a usb charger will typically deliver all of 1A, hardly enough to fire a coil. What happens with passthrough is charging is momentarily paused and the battery fires the coil. When you release the fire button, the battery resumes charging. given that, if the battery won't hold a charge, passthrough will not help you.
This is correct.
When the battery in my istick 30 failed, it wouldn't fire even with 1A USB charger.
Sent from Uranus using Tapatalk