Just thought this should be on the website
USA Seller of unit below http://www.progressiverc.com/esr-meter.html

autoranging internal resistance measuring unit
http://www.rcgroups.com/forums/showpost.php?p=20038311&postcount=249
It measures the effective resistance by applying a pulse load of controlled constant current load of 16A to the pack, measuring the voltage just before the start of the pulse and again just before the end of the pulse. It then does the maths of subtracting the last figure from the first figure, divides the answer by 16 to give result in ohms and divides that by 1000 to display the answer in milliohms.
I have compared the results with those from chargers and generally they vary by up to 150% more. The meter agrees with the figures from actual loading results when power testing whereas the charger results are higher, I think because of the endothermic effect of charging and because most chargers do not use a 4 wire Kelvin connection so that the connectors are included in cell figures.
The unit will measure any chemistry provided that the pack is between 7V and 30V and the cell voltage is less than 5V.

disco on batt temperature
http://www.rcgroups.com/forums/showthread.php?t=1323465&highlight=lipoli+object+perform+databas&page=30

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That looks like a very handy tool for assesing lipo's rather than cycling/capacity checks.  Would make a great lie detector test.

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