ask and yea shall receive
the original post answer in in the manual under Specification
and that is why it won't work - in theory
Supply current 500 mA NO CHARGING
Battery current charging 1.2A
NORMAL , not setup for "charging " USB port is LIMITED to 500mA
if the batter charging current is 1.2 A
DEAD battery cannot be safely charged using NORMAL USB port.
Besides - rule of thumb - battery charging current is limited by
capacity (in Ah) of the battery and USUALLY about 10% of such
capacity is considered safe charge current.
I am not going to go into nanaoVNA battery technology - in is NOT Lead Acid -
however , improperly charged LiPo batteries have been source of few fife causing "accidents"
CASE CLOSED
PS
How is dx?
