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<blockquote data-quote="hark" data-source="post: 764774" data-attributes="member: 13196">I was surprised to hear some of this guy's thoughts (he holds an Electrical Engineer Degree) on charging lithium ion batteries. In a nutshell, these are what he feels are most important. 1.&nbsp; &nbsp; Remove batteries from flash/strobe when not in use. Sometimes current still flows and can drain the batteries.2.&nbsp; &nbsp; Don’t store batteries fully charged – 50% to 80% is good.3.&nbsp; &nbsp; Don’t overheat the batteries (such as leaving them in a hot car). They can catch on fire. If the battery was just used, it is probably hot. Allow it to cool before charging.4.&nbsp; &nbsp; Don’t leave batteries on the charger. It can lower the battery life and is a possible fire risk.5.&nbsp; &nbsp; Don’t let them run down to 0. There’s a chance the charger won’t recognize the battery and won’t be able to charge it.I certainly didn't know not to charge them to 100% if they won't be used right away. In a Facebook group, several people have mentioned leaving batteries on their chargers for extended times only to find the batteries have completely discharged to the point of not being recognized. [MEDIA=youtube]jZhFm6MNJAg[/MEDIA]</blockquote>

[QUOTE="hark, post: 764774, member: 13196"] I was surprised to hear some of this guy's thoughts (he holds an Electrical Engineer Degree) on charging lithium ion batteries. In a nutshell, these are what he feels are most important. 1. Remove batteries from flash/strobe when not in use. Sometimes current still flows and can drain the batteries. 2. Don’t store batteries fully charged – 50% to 80% is good. 3. Don’t overheat the batteries (such as leaving them in a hot car). They can catch on fire. If the battery was just used, it is probably hot. Allow it to cool before charging. 4. Don’t leave batteries on the charger. It can lower the battery life and is a possible fire risk. 5. Don’t let them run down to 0. There’s a chance the charger won’t recognize the battery and won’t be able to charge it. I certainly didn't know not to charge them to 100% if they won't be used right away. In a Facebook group, several people have mentioned leaving batteries on their chargers for extended times only to find the batteries have completely discharged to the point of not being recognized. [MEDIA=youtube]jZhFm6MNJAg[/MEDIA] [/QUOTE]

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