One of the most expensive items on your electric utility bill in areas with hot summers is the cost of operating a central air conditioner. If your unit doesn't have the correct amount of refrigerant, this cost can be even higher. Here are some steps to help you charge your home central air conditioner. Steps.
The more discharged that a battery is, then the longer it will take to recharge it. Usually it takes several hours to effectively recharge a battery. If a battery is very discharged then it can take up to 12 hours or more to recharge it. While recharging a battery, if the battery becomes hot when you touch it then stop charging it. Slow charge: It is best to slow charge the battery.
Mostly, @Anonymous got it right, but a few details. Idling a car for 5-10 minutes will not recharge a battery. It MIGHT replace a bit of the charge lost to starting it in the first place, but even that is iffy. The alternator in your car will need to hit, roughly, 2000 engine rpm to push a charge back to the battery.Keep the top of the battery clean, not just the posts.dling a car for 5-10 minutes will not recharge a battery. It MIGHT replace a bit of the charge lost to starting it in the first place, but even that is iffy.