Top 5: Portable power chargers for smartphones, tablets

3. iBall Portable Power Charger (Rs 2,499) This iBall device is a multi-purpose portable charging pack with 8 connecters — micro USB, mini USB, Nokia 2mm, MP3 Player, iPhone/iPod, Sony Ericsson, iPad and Galaxy Tab. hence it can accommodate eight devices, be it mobile phone, MP3 player, digital camera or Bluetooth headset, at one go. …