Bimmerfest - BMW Forums - View Single Post - Good Replacement Batteries for the e39?
View Single Post
Old 02-28-2012, 11:59 PM
bluebee's Avatar
bluebee bluebee is offline
Seek to understand,^Value
Location: San Jose, California
Join Date: Mar 2008
Posts: 25,236
Mein Auto: 02 BMW 525i M54 auto 130K
Originally Posted by pleiades View Post
bought the H8 SuperMAXX at Walmart ($98 here in Eugene).
Sounds like a nice battery, and closer in fitment than the Duralast 49DL. Are the electrical specs similar?

Originally Posted by pleiades View Post
current drain of between 0.02-0.05 amp. Is that enough to kill a battery
Assuming 0.05 amps for about a week, that would amount to less than 10 amp hours in total.

I'm not sure what 10 amp hours means to a charged battery so I'll let others chime in.

But, I did find this description of 'typical' parasitic drain:
If everything is normal, you will read less than 35 milliamps, or .035 amps. If the current drain is higher than that, you need to find out what is draining your batteries
Attached Thumbnails
Click image for larger version

Name:	currentdraw.png
Views:	3409
Size:	297.1 KB
ID:	314443  
Please read the suggested threads and add value, either by pictures or by descriptions, so the next person stands on your shoulders.
See also: E39 Bestlinks & How to easily find what you need
Reply With Quote