what is USB Power bank ?? :O help me i have five questions :)

[Chathuranga5]

machanla "USB Power Bank' kiyala item eka eBay eken ganna haduwe
mata podi awl tikak thiyenawa
machan danna kenek dan use krna kenek kypanko me tika plz
1. Oye kiyana power bank items walin apita 4n eka 1 time da charg karanna puluwan? eta passe barida aye???
2. ubala ebay eken hari moken hari gattanam link ekak dennako hodata awl nathuwa weda krna ekak

 

[gampaha lena]

maa gawa tiyenwa akak aka mata hambunu akak 3 parak wage full charg karann puluwan phone 1 samsung s2

 

[lakki]

machoo phone ekata aulak nadda (battery)owalin charge karama

 

[sachi911]

1) power bank eka charge karanna one wenama. e charge eken thmai passe welawaka phone eka charge wenne. power bank eke battery bassama aye charge karala use karanna puluwan.

2) owa use karana eka device ekata owa recommend da kiyala poddak hoyala balapan. mokada normally phonewala manual eke kiyala thiyenawa ekath ekka ena original charger eken arenna wena devices walin charge karana epa kiyala.

 

[Saul Goodman]

Google the word bro. Power bank is a portable power source.

 

[Randir]

1. mam gatta power bank eken nam mcn phone battery 10% wage low unama 2-3 times full charge karanna puluwan.

2. mama gatte metanin. dan nam mama gatta eka etana na mama hitanne.
http://www.ebay.com/usr/elec-mall