This seems to be one of the more easily available portable 5V power supplies right now. They seem to be sold almost everywhere phones are sold, and come with a variety of power tips. And since we're talking about cheap China made knock offs of each other, some of them would come with only one tip, some of them would come with a few.
I managed to score one which came with a USB Mini A tip among a few others, I'll now see if I can find a Mini A to A female converter before I splice one of the cables with a socket.
The main difference between this and the other portable power sources which I have is that this thing uses AA batteries to provide the power instead of an internal rechargeable battery. This means that as long as you can find AA batteries you can keep recharging your phone, that's of course better than using the hand cranker in a pinch I guess. But is of course bad in the sense that you have to keep buying more batteries if you want to use this. The packaging states that an input voltage of 1.2V to 1.5V is supported, so you should be able to use rechargeable batteries in this.
Nice to have if you're the type of person that SOMETIMES run out of power for you phone when you're on the move, why sometimes? Cause if you were using the other rechargeable battery packs, they might have ran low on juice while in storage in your bag whereas since this uses batteries, at least in a pinch you can just slap in a AA to do the charging.
Got this for RM35 at Low Yat Plaza