Linked by Thom Holwerda on Thu 30th Jan 2014 17:44 UTC
PDAs, Cellphones, Wireless In October 2011, with the writing on the wall after Nokia switched to Windows Phone and closed the long-running MeeGo project, several former Maemo Nokians left the company ("Nokia was a coward"). With support from their old employer through the Nokia Bridge program, but without any access to Nokia's intellectual property or patents, the new company - called Jolla - continued the work that spawned the legendary N9, only able to use the open source parts of that phone's software.

Late 2013, their work culminated in Sailfish, running on their own smartphone, the Jolla. In a way, this device and its software has been in the making since 2004-2005, and considering the rocky roads and many challenges these people had to overcome between then and now, the phone sometimes seems to radiate defiance and determination.

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Mili-amp-hours are meaningless
by saso on Fri 31st Jan 2014 03:18 UTC
Member since:

Nice article, but there's one thing in it that gets on my nerves:

Just to put all this in perspective, the Jolla phone has a 2100mAh battery, the Galaxy S4 has 2600mAh, and the iPhone 5S has a 1558mAh battery. It could be that the iPhone could achieve similar battery life as the Jolla if it had a 2100mAh battery, but that's something I'll leave to the experts. For now, all you need to know is that the Jolla has amazing battery life, and that its true multitasking does not seem to affect it all that much.

I see this happen in articles all around the web, and that's that for some reason, technically minded journalists seem happy to quote battery capacity using mili-amp-hours. Amp-hours are not a measure of capacity, unless you also quote the voltage that this is delivered at. Use watt-hours (or joules for extra scientific street cred).
For instance, the Nissan Leaf's battery is ~60Ah - does that mean that it is only ~30x the capacity of the battery on Jolla's smartphone (~2Ah)? Hell no. Your average phone battery runs at roughly 3.6V, whereas the Leaf battery runs at 360V, so the actual difference in capacity is around 3000x!
Stop quoting meaningless numbers and trying to make points off of them. The conclusions you drew in that quote above are entirely unsupported by the numbers you provided.

Reply Score: 9

twitterfire Member since:

Energy is measured in joules, electron volts, calories or watt-hours.

Electrical energy is measured in watt-hours. Ampere-hours are meaningless when it comes to energy.

Reply Parent Score: 3