External Battery Roundup: Stay Away From The Wall Socket

Benchmark Results: Notebook Battery Life

We added a full-sized notebook test because different batteries are designed with different current loads in mind. Our Vostro 3300 uses 3.34 A, compared to the Mini 10's 1.58 A. As our benchmark shows, when you double the load, you basically halve the battery life.

Our updated benchmark generates an average platform design power of 28.2 W For the Dell Vostro 3300. We used this value to normalize the capacity of all batteries tested.

If you take a look at Electrovaya's PowerPad 130, it only comes in second to the XP18000. If the PowerPad had successfully completely all of its test runs in our netbook test, this what we would have seen.

We did not include Tekkeon's MP3450 and MP3450i in the Vostro 3300 test because both lack the necessary tips. The MiniGorilla and XP8000 have similarly been excluded because both are meant specifically for netbooks.

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  • sylvain
    Interesting read. Would it be possible to do a similar test for pure USB external batteries. Used for adding that extra bit of juice to an iPad, iPhone or similar devices?
  • Anonymous

    I am interested in using the battery for a DSLR video rig, i want to use the 12v to power the camera, then split the 5v to power both an asus wicast and a SDI to HDMI down convertor. both these last two devices take a 5v feed. would this be possible do you think?
  • Spanamana
    I purchased one of these batteries from a UK supplier and have to say I have never encountered such poor customer service in a long time. They claim that they supply one free tip a year. Rubbish! When you try to get one for a iPad 3 or later, they charge you $10 because they changed the name of it from "tip".

    After 8 months the battery started not keeping its charge. I tried to use the 2 year warranty to get it replaced and found out that although the unit is guaranteed for two years, the battery is only guaranteed for 6 months. Then I was told that it would cost too much to get it repaired as there is no UK repair centre and therefore there is a charge of $30 for a replacement.

    Having delivered the replacement battery, I have not received a VAT order for £21 for import duty from TNT. So a battery that cost me £50 has now cost me £95.

    Shonky product, useless service. Don't waste your money.