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Old 02-23-2012, 10:20 AM
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Default Re: Tesla's 'Brick' Problem

Originally Posted by gottdi View Post
When fully charged, the Battery’s charge level can drop as much as 7% a day and 50% within the first week. When the Battery’s charge level falls below 50%, the rate of decline slows down to approximately 5% per week.
This part really concerns me. It must be really bad for the battery to be mostly charged if their storage mode holds it at 50 and leaving it full it actively runs itself down to 50.

Also, somewhere in the manual it said the BMS functions run periodically when it is plugged in to maintain them and their environment, but it seems from people talking that it actively runs all the time, so either the manual is wrong on that point, or these cells have a rediculous self discharge rate. Lead lasts longer, and certainly recovers better.
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