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Subject: why protect the batteries-why i go for the recorder,and not the fm-recorder
From: Martin (martindavidsson_at_gmx.de)
Date: 2003-06-04


The development of Lithium-Ion (Li-Ion) based batteries retained

the beneficial electrochemical properties of metallic lithium without

exhibiting most of the safety drawbacks. However, care must still be

taken to not overcharge a Li-Ion battery. Overcharging results in the

formation of pure lithium metal, which can react and cause overheating,

fire and even explosions in extreme cases. Most Li-Ion batteries

have built in safety mechanisms such as pressure actuated

electrical disconnect to prevent the most drastic consequences, but

careful circuit design must still be done to ensure that the battery is

not overcharged. At the very least, the battery will be damaged and

have a shorter lifetime.

Electrolyte

Li+

e

LixC

Li+

e

Li1-xMn2O4

Li+

Li1-xMn2O4 + xLi+ + xe

Charge

Discharge

LiMn2O4 Positive

Negative

Overall

LixC

Charge

Discharge

C + xLi+ + xe

LixC + Li1-xMn2O4

Charge

Discharge

LiMn2O4 + C



Page was last modified "Jan 10 2012" The Rockbox Crew
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