Currently Being ModeratedNov 16, 2012 8:27 AM (in response to adessmith)Re: Preserve battery when strictly using VDI.
No, VDI does not charge the battery during use.
I would keep the battery in the charger - not in the JTV - when using the VDI connection. I would also purchase a spare battery, and rotate the two in the charger. To be extra sure, you might want to use the battery rather than the VDI for some practice sessions. You could manually set the Variax model rather than rely on the X3L patch recall for those practice sessions, and continue to use it until nearly drained. Then recharge fully.
EDIT: I'll take back the above advice. I'd go with the link/advice mdmayfield provided below. Thanks, mdmayfield.
Currently Being ModeratedNov 16, 2012 8:04 AM (in response to adessmith)Re: Preserve battery when strictly using VDI.
This is interesting: Lithium-Ion Battery Best Practices from Motorola.com
It seems fairly complex. According to that document, if the battery is unused for a long time, it will retain its capacity (not charge; capacity) the longest if it's with stored between a 30-50% charge, but not allowed to go much lower.
They say that leaving it in a device or charger "will result in storing a battery with 100% charge. The battery will not be overcharged, but it will age quicker." My experience leads me to believe that while this won't preserve the batter as well as storing it at 30-50%, it's still easier on the battery than constantly discharging and recharging it.