my guess for the weight would be the required electronics to convert the battery's voltage to upwards of 19 volts?<br><br><div class="gmail_quote">On 11 February 2011 13:56, Sebastian <span dir="ltr"><<a href="mailto:shop@open-t.co.uk">shop@open-t.co.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;">Anybody here has any experience with these universal batteries (or similar):<br>
<br>
<a href="http://cgi.ebay.co.uk/Universal-External-Battery-most-laptop-/130481566861?pt=UK_AudioTVElectronics_Video_DVDPlayers_Recorders&hash=item1e614eb48d" target="_blank">http://cgi.ebay.co.uk/Universal-External-Battery-most-laptop-/130481566861?pt=UK_AudioTVElectronics_Video_DVDPlayers_Recorders&hash=item1e614eb48d</a><br>
<br>
At 75Wh - two of them should give me 10 hours of work on my laptop (and a hernia from carrying them :-) ). If anybody has one of these - I'd be interested to hear how they fared.<br>
<br>
Also - I don't understand why does it have to weight 1.5Kgs. My laptop battery is 57Wh - and the whole laptop barely weighs 1.5Kgs.<br>
<br>
Thank you,<br>
<br>
Sebastian<br>
<br>
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</blockquote></div><br>