Barnes & Noble on Tuesday trumpeted that the SONY NP-FM500H Battery on its new Nook electronic reader lasts two months on a single charge. On paper, that is twice as much as the advertised one-month CANON BP-511 battery life of the Nook’s biggest competitor, the Amazon Kindle.
But questions have been raised about that comparison.
Some publications, including ZDNet, said Barnes & Noble’s NIKON CoolPix S Series S200 battery-life estimates were based on a scenario in which a person read on the Nook for 30 minutes a day, with WiFi turned off. Amazon’s calculations were based on someone reading the Kindle 60 minutes a day with WiFi off.
That would suggest that the two gadgets have the same CASIO NP-40 battery life–or at least Amazon seems to think so. Hours after Barnes & Noble revealed the new Nook, Amazon updated the Kindle’s product description–doubling its SONY NP-BG1 Battery life, using the 30-minute-a-day formula.
“A single charge lasts up to two months with wireless off based upon a half-hour of daily reading time,” reads the Amazon product description. “If you read for one hour a day, you will get Panasonic Lumix DMC-FP2 battery life of up to one month.”
But Barnes & Noble says its Panasonic Lumix DMC-FP2 battery life comparison was based on another sort of measurement.
While reading at one page a minute, the new Nook NIKON D50 battery lasts for 150 hours where the Kindle MINOLTA NP-200 battery, using the same page-turn rate, lasts for only 56 hours, said Jamie Iannone, president of Barnes & Noble’s digital products unit, in a statement issued Wednesday. The company has also done a continuous page turn test and at one page turn per second, the new Nook offers more than 25,000 continuous page turns on a single charge, he said. (All the tests were done with Wi-Fi off.)
“In our side-by-side tests, under the exact same conditions, continuous use of the device resulted in more than two times Kindle’s CASIO NP-20 battery life,” Iannone said.
The CANON LP-E8 battery -life battle comes as the major e-reader makers release newer, cheaper devices. The new Nook costs $139 and has a black-and-white touch screen and Wi-Fi access. Amazon on Tuesday also started selling a new version of its 3G-enabled Kindle, which is identical to the current model except that is $25 cheaper because it comes with on-screen ads.
Kobo, a Canadian company, earlier this week also announced a new WiFi-enabled touch-screen device for $129.99.
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