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Old May 2, 2013, 11:22 PM
Join Date: Jun 2012
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Default (Nintendo 3DS) AC Adapter usage affect battery life

I apologize in advance if I have posted this in the wrong area. Since this question deals with a dedicated gaming console despite the question being about Lithium Ion battery usage, I thought it best to put it here.

I have a a few specific questions about having the 3DS plugged into its AC adapter for extended use. I have a read topics related to my questions, but they do not provide an answer specific to my question or they have conflicting opinions. Sorry for bringing up this topic again but like I said I have not found, in my searching, a good hard response.

1) Will playing on my 3DS for extended use, while it is plugged in with my AC Adapter, shorten the life of my battery?

I do not intend to do this on a perpetual basis; I do bring my 3DS out often for Street Pass and for the Activity Log. My idea is to alternate; play on the go and then play for an extended time at home while plugged in with the AC Adapter.

2) Is it harmful to plug in my 3DS for extended play with an AC Adapter when the battery is only partially discharged (Like 75 to 50% percent remaining) ?

I have read and understand the Lithium Ion batteries do not develop 'memories' like NiCad batteries. However what I want to know is if constant, I guess, 'premature' charging shorten or harm the battery life in some way?

Thanks in advance
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Old May 3, 2013, 12:13 PM
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You are correct in that Li-ion do not develop a memory. Like all rechargeable batteries they do wear out over time. This process can be slowed by not keeping them at full charge longer then they need to be and by keeping them cool.

The rate of degradation of lithium-ion batteries is strongly temperature-dependent; they degrade much faster if stored or used at higher temperatures.

Consider storing the Li-ion battery between 50-75% in the fridge if you are not planning on using it for an extended period of time.
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