Hello..I have a Etec 3 cell li poly pack and I am wondering if the Ikarus 3 cell lithium ion that i have will charge it. The charge current is 550 mAh. Thanks

There are three main criteria:

1. The charger is designed to charge lithium cells.
2. The charger can be set to charge the appropriate number of series-connected cells.
3. The maximum charge rate does not exceed C, or the capacity of the pack.

550mAh is less than C on both Etec 1200 and 700 cells, and from the sounds of it, the charger is designed to charge three lithium cells in series. It should work fine, though I'd keep an eye on it the first couple of charges to make sure the voltage doesn't exceed 4.2 Volts per cell, or 12.6 Volts.

Not sure about your charger. My charger for lithium ions will though. It's the hobbico mk11 quick field charger. 2 packs at a time and only 50 bucks at tower. It only says for li-ion though. but will and does charge the lipos.

Once again, lithium is lithium. Ion and Polymer have the same charging requirements, because they're essentially the same chemistry. The main difference is in the packaging.