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My new Samsung Epic phone pulled a weird one on me today. After a full night of charging, I made two <5 minute calls in the morning, then left it in the truck all day, inactive. When I left my lady's house at 2:30 AM, I activated it to check for messages. There were none, but I was informed that the battery is flat. I've never seen a mobile phone that can't go for a few days without a charge, even if I've made a few calls. This is absurd! One of the things I found attractive about the model was the huge claimed battery time - in the hundreds of hours in idle mode. I do charge it ecery night, but Li-Ion batteries are not supposed to suffer from memory problems like those that plague NiCds.
Do I have a bad battery, or are there apps running I don't know about which eat up power like a marathon verbal vacuum-fest between lovestruck teenagers?
I agree with DaveAuld , but there is another possibility. I have noticed that Li-Ion batteries do not cope well in low temperatures: they seem to lose charge very quickly. Was it cold in your truck yesterday - 'cause it was bitter here!
Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together.