Straight to the point, for the money, I was very impressed with this battery. The battery was a replacement for a battery that I received in which my order was processed wrong (not from AirsoftGI).
My primary is a Classic Army M15A4 Carbine. When I first ordered the gun I neglected to order the package and so no battery was included. I attempted to order the 9.6v - 1400mah crane stock but I received a 9.6v - 1400 mini instead. I wasn't about to NOT shoot the gun while I waited for the correct replacement so I rigged it up to the gun to test it. The mini was OK but I couldn't use it because it did not fit the crane stock.
When I received the G&G 9.6v Crane Stock battery (received today), I charged it up and installed it in the Crane Stock. To my surprise (bare in mind that both batteries were 9.6v - 1400mah) the rate of fire on the G&G was a dramatic increase. The only fault I found on the Crane Stock battery was that the black battery wire was very slightly loose in the small connector.
If AirsoftGI did half points, I'd give it a 4.5 out of 5
Great battery for the price.
Easily installed in a Classic Army crane stock
Dramatic increase in Rate of Fire (compared to 9.6 mini)
Fits the Crane Stock well (not snug but a good fit none the less)
Very slight looseness in the black wire inside the mini connector
Not much else
Rating: [4 of 5 Stars!]