Slimest, thank you for posting your questions. Your answers are below. As always, credit for answers on technical questions goes to John.
1 - Yes. It is a completely self-contained 3A buck/boost switching power supply. It has all the proper input/output filtering built in. If you want to use it as a variable DC supply to power an electronic project (for instance), it'll work just fine.
2 - Yes. See answer #1.
3 - Yes, the undervoltage protection kicks in if the input drops below 2.5 volts, however we still recommend using only protected batteries.
4 - 3A is the maximum current the unit can supply. Any more than that and the overcurrent protection will kick in.
5 - You should be able to. Happy Vaper ships all over the world. You may have to contact Jack to get specific shipping details/cost for your country.
If you have any other questions, please post them.
Regards,
TBL36
So, if I would put it on a 18650 NoEgo/Epower, and use it with a dual coil that rates 1.6 Ohm at 5 volts, that would be 3.125 Amps, and it wouldn,t work, right?