03 vue battery dieing

[firecam421]

i have a 2003 vue that the battery is dieing rather quickly just in a few days of sitting around the alternator was tested it works but not sure what to check next just looking for some helpful adive any advice would be greatly appreciated thank you

[jdl]

Was the alternator tested on the vehicle? Use a digital volt meter, take reading across battery posts, everything turned off. The generic spec for a full charge is 12.6 volts. Then, start the vehicle, take a second reading across the battery posts. The second reading should be higher than the first, if the charging system is working.

Another thought is excessive drain, vehicle not running. I don't have the normal spec in front of me, probably not more than 50 milliamps, that is .050, not even a tenth of amp. An older way to check for drain, is place a testlite between battery cable and battery posts, if the lite comes on, you have a drain. You start pulling fuses one at a time, when you pull the fuse on the faulty circuit, the lite goes out. Check the vehicle in the dark for any lites that may be staying on, under the hood-- in the trunk-- interior somewhere.