Joe,
IIRC, the Zagi 400 has a 500mah battery pack. The Cells I believe are 2/3 cells. As for if they will work with the EJF A-10, which one are your refferring to, I think they sell more than one.

Some cells you could probably use in all of the above, would be the CP-1300 cells, as they are the same size as the 800 AR (I think) but they give long duration, they are a lot heavier than say the 600 AE cells which are a good sport battery, not suited for high drain situations.

Also, take a look at some 1050 mah Nimh cells, same size as the 500A cells in the Zagi packs, but you're looking at twice the duration.

You should be able to use the 600 AE's in your JK Aeroteck Mustang (I'm assuming this is their really small 26" span 'stang, and not a converted glow combat 'stang, they sell. )

Personally, for the price, I like the 600AE's, you can buy a lot of them. Hobby Lobby for example sells an 8 cell pack for about $25 or less, and HL has some of the higher battery prices around. (not knocking HL, I like HL a lot in fact)


--Paul