Lipo batteries are fast replacing the industry standard; NiMH. That said, there is still a lot of fear, and a lot of misinformation surrounding both LiPO batteries, and the correct charging procedure.
An essential piece of kit for using LiPO batteries is a good quality LiPO battery charger. The Multi Battery Charger by Swiss Arms is just that! It will charge virtually any batteries you can think of, and certainly any ones required in Airsoft; NiCd, NiMH, LiPO, LiFe, Li-ion, etc.
The charger is programmable too, so you can set it up for your batteries, save the settings, and you're ready to go. The charger will continuously check the voltage of the battery, and in the case of LiPO batteries, it will make sure that it's balance charged. You can program additional safety parameters, such as charge cut-off times, voltage cut-offs etc.
If you're looking for a LiPO charger, or even just a regular battery charger, but may be interested in LiPO batteries, then this is certainly the one for you.
Fully charge a standard battery in 90 minutes.