Ask Engadget how long should I firstcharge a battery

We know you've got questions, and if you're brave enough to ask the world for answers, then here's the outlet to do so. This week's Ask Engadget inquiry is from Bernard, who wants an answer to the age-old question of ensuring you get the most out of your batteries. If you're looking to ask one of your own, drop us a line at ask [at] engadget [dawt] com.

"It's said that you should always leave brand-new electronics plugged in for 'a few hours' after being fully charged, but how do you decide that period of time? Is there a calculation depending on the capacity of the battery, or what? Help me, please!"

Nowadays, do you even need to? While memory effect was an issue on NiCad batteries, Lithium Ion units don't suffer from the same issue. It could also be tied to the belief that most chargers only re-juice batteries up to 95 percent, but we can't find any authoritative proof on the matter. Let's turn it over to the electrical engineers and battery experts who read Engadget on a regular basis so we can sort this out, once and for all!

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Ask Engadget: how long should I first-charge a battery?