Just discovered SM8124 that is Volts & Battery impedance meter.
I am totally unaware of it true performance, but I am interested to discover in time other people feedback about it.
The product seems inexpensive for what it does, and has a retail pricing starting from 40$ if you research the market a bit.
I am just, posting few decent in quality pictures of it for now.
Edit 29 November. Battery Impedance Meter SM8124 mini review
http://www.ittsb.eu/forum/index.php?topic=966.0