So you purchased the new Android 2.2 Froyo packing HTC Thunderbolt on the Verizon network, and you are somewhat disappointed by the Thunderbolt’s poor battery life, but fear not as there is a way round that little annoyance.

If you are fed up with your HTC Thunderbolt battery draining away too quick you may need the iSound Portable Backup 8000mAh battery as this little juice giver is compatible with the HTC Thunderbolt, along with numerous other smartphones such as the HTC EVO 4G and the HTC Desire HD and more.

The iSound Portable Backup 8000mAh battery features a compact design and sports five USB ports enabling the user to charge any USB enabled device, whilst delivering up to 240 hours of handset playback time.

The iSound Portable Backup 8000mAh battery has LED indicators so you know when your device is fully charged and has a built-in flashlight so you can see in the dark and includes USB to mini and microUSB cable.

The iSound Portable Backup 8000mAh battery is usually price at $79.99, but HTCPedia is currently offering the accessory at a discounted price of $69.99.