When i leave my car parked and off for more than a month i often have to charge/replace the battery. However when i disconnect the battery it somehow lasts way longer. I cant think of anything that is on all the time when my car is parked (no alarms, remotes)
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Your car has a computer that draws power, it usually goes into sleep mode after a set amount of time. Your car stereo has memory that is kept active by the battery. You may have a short somewhere that is draining off your battery. If your car isn’t going to be driven for a long time it’s best to start it every so often. Also you can use a battery tender to keep it charged, I use one on my lawn tractor during the winter months to keep it charged up. Make sure to use an actual battery tender and not some cheap Walmart charger.
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