September 15th, 2007 | 
Author: When jonjay posted some pictures of the inside of his Game King-II, I realized that even though
the instruction manual indicated a 1100mAh battery, that there was actually a 750mAh battery in there.
Such dishonesty from a random Chinese company!
But nevermind, why not just put a 1100mAh battery in it for great justice?
So first, I cracked open the Game King-II myself, to see about the physical size of the battery, and if
I could actually fit a different battery in there. Then, I went on to eBay to see what I could find.
The Game King-II uses a 3.7volt battery, which luckily for me, is pretty much the predominant battery used in cell phones. Next, I did a quick search for batteries in the 1000-1500mAh range. I found an LG 3.7volt 1100mAh battery which, by complete random luck, is the exact same size battery used in my cell phone. Perfect! Even if the mod doesn’t work, I can at least upgrade my phone. Not to mention I couldn’t really find any other batteries that would fit any higher than 1100mAh.
The next trick was taking out the old battery. It’s a ridiculously cheap looking battery. Imagine a tiny static bag filled with acid. The connections were soldered, and there were also some components connected to the battery on a small circuit board. I had to carefully removed the battery using a soldering iron.
Next, I had to figure out a way to connect the new battery. It’s made to fit in a cell phone, not to be soldered, so I had to get creative. I carefully dropped some molten solder on to the terminals. Please be very careful if you do this! There is plastic, heat, and battery acid, not things you want to mess with. I would only recommend this if you have precision experience using a soldering iron. Don’t apply heat directly to the battery.
I cut a couple of short jumpers, heated up the solder on the battery, and carefully attached them to the battery. I then wrapped it up with some electrical tape, but not too much, otherwise the battery wouldn’t have fit back in.
Fortunately, the board indicated where to connect the positive and negative, so I then made another couple of precision solders to the battery board. I tried to cover everything up with a small amount of electrical tape as best I could.
When putting the battery back in, I used some of the sticky strip that held the previous battery in place on the new battery. These batteries are almost identical in size. I closed the Game King-II back up after a quick power-on to test.
Voila! Upgraded Game King-II with longer battery life! It should last about 46% longer. All in all, it cost me less than $5 and only took about an hour.
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A tiny static bag filled with acid? And you were walking around with that thing in your pocket? You could’ve killed baby Groves.
Jonny- The world could only be so lucky.
Tweeder, that was a little uncalled for. Shame for Fujiyama to mislead those of us who bought the GameKing II, I feel pretty bad for selling mine (now using an Archos PMA430) which I did use the description used by the manufacturer, but there was no way of knowing at the time.
Alright: it’s not *actually* a static bag filled with acid. That was just a joke.
Skyfire2001, mind your business. If I truly hated the thought of Matt having a baby I’d just drive to Ohio and punch Ali in the stomach…
Now that was uncalled for. I’m going to hell anyway.
Alright you two, let’s knock it off! This is supposed to be comments about modding the Game King!
Modding the Game King is uncalled for.
Owning the Game King is uncalled for.
nice work mgroves! good thing the battery pack is similar to those used for cell phones.
About a year ago i was upset cause i was on a trip and my GK power died and so i thought i would be creative and retarded at the same time, well i plugged a radar detector into the power input… that caused smoke and my game king would no longer charge via it charger port. Now it says it wont charge via USB but i have to disagree with that. About a week ago a dead GK got plugged up VIA USB to my PC for file storage and i forgot and left it on using the USB for power while i messed around with the game king. The next day i tried to unhook it while powered on threw the USB and it worked. It held a charge for a few hours like it would if i charged it threw the charger. So now im doing a little modding with the Battery pack and moving the ground to the USB hook up. Gonna see it that works better.
Is it just me or did chinese media players get a lot cheaper this month? I’m gonna buy one that looks like an ipod slim. It probably won’t do half the cool stuff the gameking does, but it should be easier to hack at.
Did the Changes with the ground moved to the USB metal plate with plenty of room to close it back up. Held a good charge for about 5-6 hours due to charging via USB.
On another note, tkf15h, careful when buying those. Even tho they say u can watch TV on them they will be useless In most parts of the worlds after Feb 2009. Those are cheaper due to they only work off of Analog
You could carry around a converter box in a backpack…