David, Did I say anything about Amp's. I was talking about battery condition and it's state of charge. If you want to test the current / amps condition of the battery the correct way you need to find someone that has a carbon pile tester. There expensive so you may have to call around to find someone that has it. John Hervey www.specialtauto.com -----Original Message----- From: dmcnews@xxxxxxxxxxxxxxx [mailto:dmcnews@xxxxxxxxxxxxxxx] On Behalf Of David Teitelbaum Sent: Thursday, August 02, 2007 8:34 PM To: dmcnews@xxxxxxxxxxxxxxx Subject: Re: [DML] power drains.... You cannot infer from a simple voltage reading what the ampere capacity of a battery is. It takes a load test to determine that. Most places will do it for free in the hopes of selling you a battery. If you let a new battery go completly dead several times you may have killed it. Lead-Acid batteries do not take kindly to being completely discharged. Pull all of the fuses. Put an ammeter in series with the battery. Install the fuses one-at-a-time and watch the ammeter. When it jumps up you will know which circuit is the problem. A battery Master Switch is also useful. David Teitelbaum vin 10757 --- In dmcnews@xxxxxxxxxxxxxxx, "John Hervey" <john@...> wrote: > > Andy, > 12.66 volts the battery is at 100%, 12.5 volts the battery is at 80%, 12.2 > volts the battery is at 40%. That's why at 12.2 volts it most likely won't > start. > John Hervey > www.specialtauto.com > www.deloreanautoparts.com > > [moderator snip] To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links To address comments privately to the moderating team, please address: moderators@xxxxxxxxxxx For more info on the list, tech articles, cars for sale see www.dmcnews.com To search the archives or view files, log in at http://groups.yahoo.com/group/dmcnews Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/dmcnews/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/dmcnews/join (Yahoo! ID required) <*> To change settings via email: mailto:dmcnews-digest@xxxxxxxxxxxxxxx mailto:dmcnews-fullfeatured@xxxxxxxxxxxxxxx <*> To unsubscribe from this group, send an email to: dmcnews-unsubscribe@xxxxxxxxxxxxxxx <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/