I have never lost a altimeter due to a e-match short or used a current limiting resistor. I might however be able to offer a bit of info on the amount of current a Li-Po can deliver.

As MickeyD stated the only way to determine the maximum current a battery can deliver is by knowing its internal resistance. Many of the better chargers measure I.R., and stand alone I.R. meters are available. I have two chargers that will measure I.R., and two stand alone meters. While I use them for keeping a watch on the health of my batteries they will also determine the maximum current a battery will deliver in a short circuit condition.

A nine volt battery has a I.R. of about 2 ohms, maybe a bit less, thus using ohms law, nine volts divided by 2 ohms gives us a maximum current of 4.5 amps. That is why many rocketers like them, even in a short circuit condition they cannot deliver more than 4.5-5 amps.

The I.R. of a Li-Po is measured in milliohms. In testing a "Zippy", 2200 mah, 20C, 3S battery, I measured a total of 29 milliohms between all three cells. Again using ohms law, 12.6 volts (the voltage of a fully charged 3s li-po) divided by .029 ohms, gives a current of 434 amps. That right, 434 amps. Now it will only deliver that for a very short time, the battery will heat up thus increasing the I.R., the leads will also heat up and melt, the solder used to connect the leads to the battery will likely melt and break the short, and the battery may burst a cell and catch fire.

In addition to rocketry I also do quadcopters, cars, and boats, thus at any time I have 30-40 Li-Po's on hand. In testing them, I have found that all of them will deliver between 100 and 200 times the rated mah current in a short circuit condition. The smaller 1s ,low mah batteries will deliver around 100 times the mah rating, while the 3-6s batteries all deliver about 200 times the rated mah of the batteries.

What many people forget is the "C" rating is the maximum amount of current that can be taken from the battery without damaging the battery, not the maximum amount that it can deliver in a short circuit condition. Thus that little 300 mah, 20c battery in a short circuit condition, could deliver 30 amps not 6.