Their description:
Product Description
When the battery icon is coloring red, click in the 3G JUICE , start smiling. Double the life from 10 to 100% in 2,5 hours with this extra battery which easily clips on your iPhone, iPod or iTouch. Featured in Gizmodo (NL) and New York Times (US).
If you normally can talk 6 hrs with your phone, now you can talk almost 12 hours. If you surf for 4 hours, you get almost another 4 hours.
We prefer to use this comparison because claims like up to 50 hours extra pow… More >>
Go & get it here - i can recommend it:
3GJuice Black 2.0 1800 mAh/2A DeLuxe Version iPhone/ iPod Battery Charger
The product worked for one week only - was in the middle of charging and it stopped completely. Since a friend shipped this out to me in Saudi Arabia, it is very difficult for me to return the product, which is a shame because it was perfect for my needs. My Iphone is business related and I found the Iphone battery was just lasting no more than five hours. This product enabled me to move freely and and charge at the same time.
This seems like a good idea but every time I plug this in, my 3G S goes from 5 bars to “Searching”.
Hold off until they fix this huge bug
UPDATE- The seller (Henk) contacted me and graciously sent me complimentary batteries. This is a very honorable thing to do.
I raised rating to 3 pending my use of the product.
A bad product that stopped working for me. This battery worked twice — then died.
I contacted the manufacturer — he (Henk Van Ess) diagnosed the battery problem (via e-mail) and said he would send me a replacement. He asked me to send him the bad battery I had — which I did — then he stopped responding. A waste of time & money — kinda disappointing when someone treats you shabbily and doesn’t honor the warranty. So, no support, warranty not honored. Yikes.
I also bought the Kensington Battery Pack and Charger for iPod — at the same time — it’s different — larger — but has worked great. I have used it about a dozen times and no problems.
Too bad about the 3GJuice — I now need a small battery similar to it.
!!Found a good replacement — haven’t used it yet (it came in 2 days) — will report back on how great it is — 1/3 the price of the the 3GJuice:
Giessbach 1900mAh External Backup Battery Charger for iPhone (Rechargeable)-WORKS FOR 3GS, iPhone 3G, 2G, iTouch, iPod Nano