How to prolong your battery with Tekkeon Universal Laptop Battery. Tekkeon MP3750 comes with all the connectors you need to power your laptop. And to charge your Tekkeon, you can use your laptop charger connector and attach it to Tekkeon. Less things to carry, and enough juice from Los Angeles to Tokyo in one continuous use.
The Tekkeon I have is the MP3750 with an add-on MP3450-10, which adds up to 7 hours on top of your current laptop battery, results may vary depending on your laptop. For example; my HP TX2 last 3 hours, add the Tekkeon MP3750 and MP3450-10, it last 7 hours total. It last this long because I optimized the Tekkeon to use half of it’s Voltage. My HP TX2 use 19 Volt to charge the battery, but instead I set the Tekkeon to Manual at 12 Volt. I plug in my fully charge laptop battery to my laptop, then plug the Tekkeon to the power plug of my laptop. So my laptop thinks there a power adapter attached to it but it doesn’t charge my laptop battery. With this settings, it will last 7 hours total. Once Tekkeon Battery is depleted, it will use the remaining laptop battery, making it a total of 7 hours. If you let Tekkeon charge your laptop battery by setting it at 19 Volt, your laptop will be dead in 5.5 Hours, which includes your laptop battery at 0%. Still add 2.5 Hours with Tekkeon, so it’s better than nothing. But still, you get from 2.5 Hours to 4 Hours on the HP TX2.
Optimized Manual settings at 12V = 4 Hours added
Not Optimize Manual settings at 19V = 2.5 Hours added
Tekkeon is well worth it, but very expensive. If you’re on a plane ride, it’s definitely worth it. Not only it can power up your laptop, any laptop from 10V to 19V, but it has a USB 5V Connector so you can charge your Phone, iPod Touch, or Nintendo DS (for my kid).
Of course, if you have a laptop that requires less than 12V, it will last longer. That part I have not tested, but if you have EEE PC 701, and would like to know how long it will last, let me know. I would hate to borrow a pink 701 from my mother in law. 
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Eberhard
Eberhard, twitter @powercx, likes to write as a hobby, and he loves the media. Likes to play with gadget toys, plays with any cool Software for smartphone, PC or Mac and writes his own review. His review is unbiased and not sponsored. Even though Powercx.com has been around since '96, he didn't start blogging till '98. His Tech experience is with Cisco Systems and Wells Fargo as an avid backend web developer with JSP, PHP, ASP, CSS, and Javascript as well as a part time Web Designer on the side does not end there.
This site is about all type of gadgets that he will encounter with. From cool Software that comes with the Hardware, or any Hardware that comes with heavy interest in the community. He will be posting at least two post a week.
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