Originally Posted by biskit
Papabatman: yes. Battery chemistry does not matter. There is a low voltage limit but I don't know what it is, perhaps Wayne can tell us?
The unit uses the battery under test to power its own electronics so that any pack of under 6V ON LOAD will not give a valid reading unless the single cell modification has been carried out. This enables the unit to be powered by a separate source such as a 2S or 3S lipo via an auxilliary input lead.
Under these conditions it will measure the IR of a single cell of any chemistry with a cell voltage of between 1.5V and 4.5V.
So in practical terms this means that you can measure an LiFe pack of between 3S and 7S without any modification and down to 1S with the single cell mod.
The minimum of 1.5V means you cannot measure a single NiCad or NiMh cell but you can always measure two in series and halve the value! ( Assuming they are equal of course)