[Richwood]

Good quality Lithium Ion rechargeable batteries condition is hard to judge at times. I have several older Sony ebook readers that as bought appeared to have very poor condition batteries. As received they were self discharging in 48 hours or so. After multiple charge and discharge cycles they are much improved. Four are still showing full charge (4 bars) after 3.5 days from last charge. Before deciding that a lithium ion battery is hopeless try charging and discharging it at least a dozen times or so until it's capacity and self discharge stabilizes. You might be pleasantly surprised.

This primarily applies to used purchased readers. If one that you have been using regularly then a dying battery should be obvious unless you left it unused for a fairly long period.