Lipo battery can explode just like an nimh can if not handled properly. I have seen nimh packs that were pushed over there limit and the tabs be melted and the cells swollen. If lipos are use correctly there is no issue with them, if they were that dangerous I don't think they would be used in the majority if not all cell phones. Yes, don't use a lipo with an nimh charger!!! Use a lipo charger, and as for charging batts, the lower the amps that the battery is charged at is usually better for the life of the battery, and like said, the charger doesn't determine how many amps or miiliamps it puts back into the battery, it's what the battery will take to reach full charge. I don't care if it's charged at 1amp or .1amp, it will charge the same amount, it will take longer at .1 amps but it will end the same. I have played with many high powered brushless rc car systems and have seen some batts capable of 400-500amps, the technology is booming right now. And the batts are getting smaller. But like I said, lipos are safe as long as they are used properly. You can't over discharge them, this is a big NO NO. You Can purchase battery cell monitors from venom rc or from the many people on flea bay, this will tell you the voltage of each cell and also you can set an alarm so that when the voltage of a cell reaches it's limit a buzzer alarm goes off. If you do decide to get the lipo listed above, don't forget to get a lipo charger as well. Charge the battery at 2.2 amps or less. No more than 2.2amps though IMO. Hope this helps. God bless.