For MP7 AEP owners, here is a Li-Po Adapter they can use so they can power their AEPs with Lipo batteries. Softair Zone tells more... "This practical adapter eliminates the need for mods or soldering to equip the Well or Umarex MP7 models with Li-Pos. The ROF and the power becomes more constant and the Li-PO lasts a long time. Especially since you can choose the performance here in the accessories.

Apart from Lithium Ion Batteries, Vengeance also make Lipoly Batteries and two of these are in stock right now at Airsoft Atlanta... "New Vengeance Li-Po stick batteries!. $15.99 for 7.4v and $21.99 for 11.1v. a few hundred in stock at our local Atlanta shop. The 7.4v is great as it fits in everything! Stop by and check them out this weekend."

Reapers Airsoft gives a guide for newbies on understanding Lithium Polymer Batteries, one of the batteries that can be used for AEGs. In this video, topics covered are about Charge, Balance, Charger, and Safety... "Hi folks, since lately some questions came from newcomers about LiPos, we summarize in this video the most important points on LiPo battery together."

Airsoft Fix were able to fit a LiPo Battery on a Marui AEP, which seems to be the Glock 18c AEP in this case... "Check out this installation we did in December 2012 for a local Alaskan customer - his Marui NiCD batteries just weren't cutting it at 10 degrees Fahrenheit, so we modified the gun to accept a BOL 7.4v, 1100mAh 15C Micro Stick LiPo with a Mini Deans-Type connector.