Even while your car is off your battery provides power to things like the clock the radio and the alarm system.
Car alarm battery drain.
Here are three unusual reasons why your car battery might die.
It s normal for the security alarm clock and radio presets to be operational all the time.
Installed correctly they draw a small amount of power and won t drain your battery.
When a car battery gets to five or six years in age it doesn t hold its charge as well.
These things shouldn t have a major impact on your battery.
When your car battery dies once it may be tempting to just write it off as a fluke.
Here s why your car battery keeps draining.
Battery was only a year old but this confirmed the culprit was not any drain on the battery while the car was parked.
Installed incorrectly they can suck the power right out of.
If the battery is already going bad a car alarm drawing power while the car is off is going to put the old battery over the edge and make it.
For example the parasitic drain could extend to turning on the trunk and glove box lights which typically.
Let s look at common problems causing a battery to drain and ways to fix them.
What can cause a car battery to drain.
Car batteries can die for a huge range of different reasons and there s always the chance that whatever went wrong won t go wrong again.
But when your car battery keeps dying over and over again it s a pretty safe bet that there s an underlying problem that needs to be dealt with before you end up.
Some parasitic drain is normal your battery delivers enough energy to keep things like your clock radio presets and security alarm operational at all times.
If your car radio or alarm system needs a code to reactivate it after cutting battery power make sure you know the code to turn it back on.
What may drain a car battery when it s off however are things such as interior lights door lights or even bad fuses.
The amperage battery drain test requires disconnecting one of the battery cables.
Many of us wonder what causes car battery to drain.
Also the reminder about switching the plugs to 10a or 20a to keep from frying your multimeter was much appreciated.
Modern cars are full of electronics and problems with drained batteries are more frequent.
Car alarms installed by the automaker don t usually cause trouble but aftermarket car alarms are a different story.
Finally make sure the car battery you re using for this test is fully charged.
However if there s an electrical problem such as faulty wiring poor installation and defective fuses parasitic drain can exceed what s normal and deplete the battery.
