Quote:
Originally Posted by DrunkenDonkey
The inability to turn off, however, is not that great  Batteries have limited number of charges, so the less the better |
The battery drain in "sleep" mode is negligible. The saving through being able to turn the Kindle completely off and sleep mode, really would be infinitesimal.
Lithium batteries have two factors which determine capacity:
1. The number of charge cycles. Capacity decreases with the number of charge cycles.
2. The age of the battery. A typical lithium battery will have lost something like a third of its capacity through natural aging after 3-4 years.
For a laptop the first of these factors is significant, but for a low-power device like the Kindle, the second completely dominates. I recharge my Kindle perhaps once every 3 weeks. That means that I has about 15 charge cycles in a year, which is completely negligible compared to the effect of natural ageing.