Griffin PowerBlock Reserve review

Stop your iPhone struggling to make it a full day without a charge

By  from MacFormat Issue 222
Product Type
AC Adapter
Brand Name
Device Supported
iPod, iPhone, Portable Audio/Video Player, Cellular Phone
Input Voltage
110 V AC, 220 V AC
Green Compliant
Green Compliance Certificate/Authority
  • MP3 Players
  • Cellular Phones
  • USB Chargeable Devices

Apple Audio/Video Players:

  • iPod classic (2007) 80GB,160GB
  • iPod classic 120GB, 160GB
  • iPod video 30GB, 60GB, 80GB
  • iPod photo 20GB, 30GB, 40GB, 60GB

Apple Smartphones:

  • iPhone
  • iPhone 4GB, 16GB, 32GB
  • iPhone 3G/3GS 8GB,16GB.32GB
Griffin Technology
Product Model
Product Name
GA23059 PowerBlock Reserve AC Adapter
Manufacturer Part Number
Manufacturer Website Address
Marketing Information

At the same time you're charging your player's internal battery, you're also charging the detachable Reserve battery pack for your iPod or iPhone. It's like getting twice as much use out of every time you charge.

Output Voltage
5 V DC
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