Photos as requested

Images of my abused M6 with added 2200mAh iPod replacement battery attached.

The player is mounted into a soft leather wallet which houses the battery, provides protection and also works pretty well as a stand.







The wiring is extended through a small hole in the back cover through to a rear pocket where the battery is stored.







Full recharge is about 4 hours and I've managed approx 60 hour continuous playtime so far but have yet to run a full test.

Yay ! The new Meizu M6-MGE - McGyver Edition :D
We're unworthy ! We're unworthy !

Wow... nice job there Madman, I can never do something like this. Do you study in this field or is it just out of personal interest?

What? You cut a hole in it? YOU KILLED IT!

60 hours playtime :eek::D:eek:

That is pretty cool...

Madman,

That is extremely cool, not only the modification itself but the photos. Well done!

Wow nicely done man! 2200 mAh =

ha! looking good...
good job!

would never dare to punch a hole in my player myself though

I was wondering about that amperage. Doesn't adding more amps mean you're running more power through it..? I've forgotten exactly what the difference between volts and amps are...

2200mAh rating refers to the batteries capacity the bigger the number the longer the runtime, it is still only 3.7Volt.

If the Meizu in normal use draws lets say 30 milliamps per hour to run the standard 700mAh battery will last approx 23.3 hours. A 2200mAh battery at the same 30 milliamps per hour will last approx 73.3 hours.

Ah, ok. That makes sense.

Now it makes me want to try that, but have a plup in it instead that allows me to swap the battery in the back just by unplugging it from the back to the M6 and plugging in a new one, and also add a switch to switch from the internal power to the external power.

Only one thing, though... how do you charge the iPod's battery like that? Wouldn't the power control chip in the M6 only be programmed for the M6's own battery? I mean, how well does it detect the total power of the whole setup, and then charge it to the correct amount?

The charge controller does not work to a specific amount, it measures the amount of current that the battery is drawing, as the battery reaches max charge the rate will drop and the chip will signal the battery is full.

So, does that mean I actually could hook up an ipod battery right to the same points as the M6 battery, or any other battery of the same type and voltage, and I can charge it to full just like normal, and the chip will signal when it's fully charged correctly?

Also, I was wondering one other thing you might be able to answer... If I were to connect another battery to the same contact points at the M6's battery at the same time, would it damage the M6, or would it just draw half the amount it usually does from each battery? Just wondering if you have any idea what would happen if I were to build a switch into it that would switch from drawing power from the M6 battery, and then halfway through sliding the switch over have it connecting both batteries at the same time so the M6 doesn't get disconnected from a power source for any amount of time, and then when the switch is fully over, it's only drawing from the other battery.

Sorta like this:

B1+ in [_] ---- B2+ in (Switch on battery 1 only)
. . . . . ||
. . . + out

B1+ in __ [-]-- B2+ in (Switch contacting both battery circuits in the middle)
. . . . . . . ||
. . . . . .+ out

B1+ in __ ---[-] B2+ in (Switch on battery 2 only)
. . . . . . . . . ||
. . . . . . . . + out

Say this is just the positive circuit from the battery going through the switch from both batteries, and the negative circuits for both batteries are soldered to the same point, where they're supposed to be attached at.

Edited "diagram"

Whilst I am no expert, I do know that with lithium polymer batteries higher voltage is obtained by connecting multiple cells to obtain the desired voltage. With this in mind you may inadvertantly increase the voltage to your player by connecting 2 cells at once. If so then yes it may well damage your player.
It would be safest to keep the setup simple. If you want to install a switching system I would suggets using a method that would switch between cells so that only one of them is connected at a time. You would then also need to use the switch to charge each cell independently.

Well, wouldn't those batteries just work the same way as other batteries when you need to add voltage?

circuit in---> -[ 1.5V ]+-[ 1.5V ]+ --->3 volts out

I was thinking of a parallel setup where the batteries wouldn't be linked plus to minus, but both plus and both minus are linked and attached at the same time.

circuit ---> -[ 1.5V ]+ ---> 1.5V out,
in-------> -[ 1.5V ]+ ---> each drawing half their milliamps in current?

I'm thinking of some way to keep the internal battery, but at the same time, be able to plug in a full battery on the back like how you have set up, and then be able to switch power sources from the internal to the external battery at will. I'd like to make some kind of plug in battery pack out of an ipod or other battery of the same type that doesn't use the USB port.

If I can get my M6 working again, I'm thinking of using it as a test device to try to build something else... an external battery pack with a build in USB micro drive, which would basically allow me to take a --Gb USB micro drive, with a built in power source to power it, working pretty much just like the whole battery pack USB OTG setup, but have it built into a small shell of some type that I can stick the M6 into, and flip up a mini USB plug into the port. It's elaborate, yeah, and I'd have to get a battery pack to see how it works and stuff, but it'd be cool to have the M6 with it's built in RAM, and then carry with me all my music on a microdrive that won't be in constant use, like mp3 players that use a hard drive. A flash drive player with a microdrive full of music to choose from.

Awesome!!!!!!!

DChronos you should be able to couple them in parallel without increasing the output voltage (if I remember my physics classes correct)
But hey try it, and measure it with a volt meter, that should tell you.

MadMan must say I like your mod, might do something like that my self once, but first I got another project, going to build me an amp for my M6.

m@dm@n...

how you will manage to sleep and take a shower during that 60 hours?
is the soft leather wallet waterproof?
:eek:



congratulations for share this with us
:D

Be careful when "upgrading" your batteries....

Your best bet is to do like Madman here, use an Ipod or portable DVD player, etc battery.

Don't just go out to Radio Shack and buy a bunch of rechargeable AA's and put them in series. While the voltage may be correct, and the mAh is good, the fact is, this setup cannot easily control the output as the battery slowly dies, risking damage to your unit....using a battery from an electronic device is much safer as it is sure to have the circuitry buit in for regulating current as the battery dies.

I did the same thing to my Sirius radio a couple of years ago before they were built portable....

http://www.siriusbackstage.com/forum...ad.php?t=75425