Whoops...now I know what you have been talking about, Flashpilot.
Stefaand, can just email Ric and ask him to change to other batts? This one should be ok. Just get 3 pcs.
http://www.cnqualitygoods.com/goods.php?id=51
Yes of course there is a danger. But with judicious use and decent protected cells there really is no additional danger compared to the Li-ion that you use in your notebook.
You need to get a digital multimeter, what you are aiming to do is to make sure all cells are balanced in voltage, ie all 4.2V before you start using them. For the first discharge, perhaps you can measure in 10 mins interval and ensure that their voltage stays about the same. If they are all within 0.03V +/- it really is pretty ok.
BTW when you first get the cells, you need to measure their voltage which indicates the state that they have been stored, you are aiming for a value between 3.5V and 4V. If they are like < 3.4V, be very wary during usage and see if they stay balanced as a batch.
Basically with PCB protection you are protected the Li Co cells from dead shorts and over-charging. There is no such thing as trickle charging, if they are full then they are full. Trickle charge them no matter how small a current and they'd blow soon be it in hours or a few days. Compare this to NiMH, which safely dissipates the extra charge as heat - they may not operate that well after that if severely overcharged but they won't blow.
With all my cells, be it branded or those with lousy brands, i will test the PCB. Use the multimeter in current mode and short the + and -. The value would jump a bit and then fall to zero, ie protects from shorts. No danger.
http://www.youtube.com/watch?v=z3o_2mwRPdw
But please, the risk is really very very low, you run a higher risk of blowing yourself up with illegal fireworks. If you follow good practices there shouldn't be any issue at all.