To offset some of the dangers around using LiPo batteries for Airsoft, I strongly recommend installing a Trigger Master fire control computer.
I use a Trigger Master in my LiPo guns, and The overcurrent/overheating/and over-discharge protection it offers is second to none.
I recently had an opportunity to review the Trigger Master Mk.I, and now the Mk.II - and they are without a doubt the best thing I could ever have installed in my AEG to protect it (and myself) from the dangers of using a LiPo while I play.
For charging, I use an iMax B6 charger. It is relatively inexpensive, and works very, very well.
Depending on the AEG you use a LiPo in, you may (or may not) need to modify the internals of the mechbox.
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