Max Battery life

bo-kai · 09-24-2010, 02:25 PM

getting my PRS-650 tomorrow and was wondering about the first charge.

I ve been told by an assistant when bought some hand powertools that I should charge them, and then completely discharge them after the first use to maximise the battery efficiency. This was not written in the manual... any ideas if there is some funny charging sequence that I should do on my PRS-650?

bmatt · 09-24-2010, 03:52 PM

Most new lithium-ion based batteries do not require this, some older batteries had "memory" and if you didn't discharge they would hold less. From what I understand with most newer batteries you should charge frequently, as smaller charges have a lesser effect on the battery life (not as much heat). The further you discharge them the more heat builds when they charge and it lessens the battery life. I am not sure about the battery in the Reader though. I have also heard that fully discharging a lithium ion battery can cause it not to accept a full charge again, the device should cut off before the charge level reaches that low though, I believe. I've also heard that the batteries tend to last longer in cooler usage conditions.

09-24-2010, 02:25 PM	#1
bo-kai Junior Member Posts: 2 Karma: 10 Join Date: Sep 2010 Device: PRS-600, PRS-650	Max Battery life getting my PRS-650 tomorrow and was wondering about the first charge. I ve been told by an assistant when bought some hand powertools that I should charge them, and then completely discharge them after the first use to maximise the battery efficiency. This was not written in the manual... any ideas if there is some funny charging sequence that I should do on my PRS-650?

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09-24-2010, 03:52 PM	#2
bmatt Enthusiast Posts: 48 Karma: 12 Join Date: Sep 2010 Device: Sony PRS-650	Most new lithium-ion based batteries do not require this, some older batteries had "memory" and if you didn't discharge they would hold less. From what I understand with most newer batteries you should charge frequently, as smaller charges have a lesser effect on the battery life (not as much heat). The further you discharge them the more heat builds when they charge and it lessens the battery life. I am not sure about the battery in the Reader though. I have also heard that fully discharging a lithium ion battery can cause it not to accept a full charge again, the device should cut off before the charge level reaches that low though, I believe. I've also heard that the batteries tend to last longer in cooler usage conditions.

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