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lutful
... of ideas
Premium
join:2005-06-16
Ottawa, ON
kudos:1
reply to pulsar777

Re: Amazon Kindle 4 battery

said by pulsar777:

In my case, the initial battery charge was about 25-30%. And during the 6 months I haven't used the Kindle, the battery self-discharged almost completely.

You could recharge that Kindle every 6 months to about 40-50% state of charge if you are not using it.

Use ball-park 5% per month discharge rate for modern Li-ion battery modules. The built-in protection circuit accounts for about 3% while the battery itself discharges at a rate proportional to state of charge and temperature.

But it will charge up even when fully discharged for minimum X cycles specified by battery manufacturer. X could be 100-500.

pulsar777

join:2009-12-21

does the Kindle 4 have built-in protection circuit?


TheMG
Premium
join:2007-09-04
Canada
kudos:3
Reviews:
·NorthWest Tel

said by pulsar777:

does the Kindle 4 have built-in protection circuit?

More than likely yes. Manufacturers have learned their lesson and have figured out that Li-Ion cells can be quite hazardous without adequate protection.