Increase Play Time of MP3 Player

I purchased a mp3 frm local market , but it hardly plays for 10 - 15 min and then
I had to recharge it .I found that it uses cheap tiny rechargable battery ,
which was nothing but scrap , so I thought to replace it a higher amps battery
so that it runs for hours

Open the mp3 player , carefully , it will be generally just glued at bottom , so a little effort and it will open

Once you open it , you will find the battery , and speaker wires , disconnect them.
you will be amazed to see how you were cheated with this tiny battery  

Now you have to get the very thin wires to get soldered the speaker and your new battery (3.6 volts , ni mh , 1ah ) or any spare battery which you have , only thing you take care is , voltage , must be 3.6 volts

so get the thin wire , best is you cut any usb data cable , and you will get best cable there

Solder carefully the new battery , and also connect the speakers , (little bit longer wire )

Put back the mp3 case , please be careful while taking out the power wire , i took it out from the usb gap
connect the battery and power on

Now the mp3 player is ready , you secure the battery ,
i tied to the device itself as it is handy and ready to use
Now my mp3 runs for very very long with one charge