Need help with my "new" KPT P6280 - Battery and Charger

[Betaz]

Hi everyone!
Some days ago, a friend of mine gave me this mobile phone that a person gave to her because her father offered her one of those samsungs with dual sim card both online.

It's a Hong Kong Litong (also known as KPT) P6280.
Its main features are:
- GSM 900/1800 MHz
- Dual Sim Card (don't know if it's both online or standby)
- Touch Screen
- SD card up to 1 GB
- Black list
- Stereo sound
Unfornately, it has 2 problems:
- It run out of battery and due to the fact my friend lost its charger before she gave me, I don't have a way to charge it because of that and because it charges by usb cable that has a connector format that I've never seen here in Portugal.
- When I opened the phone back cover, I noticed that its battery is not in a very good conditions (the battery is envolved in a kind of plastic that is coming out).
So, I'm here asking for your help, guys.
I already searched over the Internet and couldn't find the manufacter website or some kind of asian mobile part seller to order a charger and a battery.
I'm only giving much trouble because I felt in love with this phone when I tried it and in my country, the dual sim phones are few, way to expensives and I don't have all that money to spend and buying only the pieces that I need, would be much more cheaper.
Can some of you help this "little girl" find what she is searching for or give some kind of advice in what I should do?
Thanks in advance and sorry if the post is wrong in any way (it's my first one, feel free to move it or edit it if necessary)!