Etón BoostBloc6600

Rechargeable portable backup battery (Black)

  • Etón BoostBloc6600


  • Etón BoostBloc6600

    Black (smartphone and tablet not included)

Item #: 710BB6600B

Review Summary

This item is no longer available to purchase.
Contact us for other options
Call   Email  

Our take on the Etón BoostBloc6600

by Ralph Graves
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.

See more info on this item


  • 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

Hands-on research from the Crutchfield Labs (what are the Labs?)

Product 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

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 open the box, verify contents, 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.


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)
Review this product
Great Gear Giveaway rewards card

Submit a review and then enter to win a $500 rewards card

Etón BoostBloc6600 Reviews

Average Customer Review:

2 people say:

Review this product:

Thanks for taking the time to share your experiences about this product. Please be sure to focus your comments on the product itself. Read our Review Guidelines for more information.

Your email won't be visible. Please use the email address that is associated with your order.
(e.g., JohnD) Your review will be signed using the display name and location
(e.g., Charlottesville, VA)

Click on a star to rate the overall product on a scale of 1-5
1500 characters left
Attach a YouTube Review
Crutchfield Video Review Guidelines
  • Only submit videos that you made or are authorized to use.
  • Do not submit videos that contain music, video or visuals that are copyrighted and belong to someone else.
  • Please see our Review Guidelines for more information.
500 characters left
500 characters left
Filter by rating:
4 out of 5

Good unit

Written By Anonymous, Matthews, nc on Friday, May 17, 2013
Crutchfield Customer Review (What's this?)
Easy to use and charges multiple devices. Packs a lot of punch.
Works better than others I have used in the past.
Gets extremely hot when charging from A/C outlet, but not from my PC.
Was this review helpful?    Yes | No
5 out of 5


Written By Reginald G, Texas on Monday, March 11, 2013
Great product works good..
Small compact
Was this review helpful?    Yes | No

For a more in-depth review and enhanced detailed information on the Etón BoostBloc6600, please visit the Crutchfield website product page (/ISEO-rccbcspd/p_710BB6600B/Eton-BoostBloc6600-Black.html ).