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Eton BoostBloc6600 charger

Charge two portables simultaneously

What happens when your smartphone runs out of power and there's not an outlet in sight? No problem, if you have an Etón BoostBloc6600 backup battery. This handy portable battery pack can recharge your smartphone or tablet anywhere. Actually, it can recharge your smartphone and your tablet anywhere. The battery has two USB ports that let you simultaneously recharge two devices.

The BoostBloc6600 comes with a micro-USB cable that lets you charge it up with most smartphone chargers. A unique LED indicator lets you monitor the power level — just shake the battery to see your remaining charge. The BoostBloc's a great way to recharge all your portables when you're on the go —  tablets, smartphones, cameras, gaming devices, and music players.

Product Highlights:

  • LED charge indicator
  • two USB ports to charge two devices simultaneously
  • micro-USB charging input cable for use with smartphone chargers
  • 6600mAH rechargeable lithium ion battery
  • 1-3/4"W x 1-3/4"H x 2-13/16"D
  • weight: 6.5 oz.
  • warranty: 1 year
  • Our 60-day money-back guarantee

Etón BoostBloc6600 Reviews

Average Customer Review:

2 Reviews

Good unit

Written by: Anonymous from Matthews, nc on May 17, 2013

Crutchfield Customer Review (What's this?)

Easy to use and charges multiple devices. Packs a lot of punch.

Pros: Works better than others I have used in the past.

Cons: Gets extremely hot when charging from A/C outlet, but not from my PC.


Written by: Reginald G from Texas on March 11, 2013

Great product works good..

Pros: Small compact

Cons: None

Hands-on research

What's in the box?

Download owner's manual

  • Battery backup/USB charger
  • 20" USB charging cable (microUSB type-B connector on one end and a USB type-A connector on other end)
  • Instructions
  • Limited Warranty/Product Registration

Product Research


Overview: BoostBloc6600 from Etón is a powerful backup battery pack with a 6600mAH lithium-polymer battery that provides long-lasting reliable power whenever and wherever you need it. Fast and efficient, when fully charged, BoostBloc6600 fully charges most smartphones so you're never caught powerless. With its sleek and elegant design, BoostBloc6600 fits in the palm of your hand. BoostBloc6600 features a Micro-USB DC input to use with most smartphone chargers. It packs enough power to charge a tablet and with two standard USB ports BoostBloc6600 can charge two devices simultaneously. An LED charge indicator lets you monitor the battery charge level when you give it a quick shake. Whether you are on a plane or trekking in the woods, let BoostBloc6600 provide the power you need to stay fully charged wherever you are.


  • Input: Micro USB port (DC5V~1A Max)
  • Output: Dual USB type-A ports (DC5V~2.1A x 1) or (DC5V~1A x 2).
  • Capacity: 6600mAH (Lithium-polymer battery)

Our Product Research Team

At Crutchfield, you'll get detailed, accurate information that's hard to find elsewhere. That's because we have our own in-house Product Research team. They verify what’s in the box, check the owner's manual, and record dimensions, features and specs. We stay on top of new products and technologies to help people make informed choices.