差機問題

I want the buy a 差機 for mini-z aaa, I know nothing about it so, any C Hing know which kind is good and how much?
I will be great if can show some pictures

Thank you very much all~

x chager b6
佢可以叉好多電我買350有火牛個人覺得好好用,又低用

Thx C Hing~
By saying 火牛, is it heavy to carry? is it like a extra big silver box thing? or just like a computer 火牛?
and how long does it take to charge up 4 aaa for mini z?

我都唔係好知太多,好似psp d火牛咁

Thx~
I will have a look at it tomorrow.