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.
If you don't have one leave the car running for about an hour-If it goes dead again then you have to accept the battery's no good. If you live in a cold climate you definitely need a new battery before the next cold season. IF the battery's in fair shape it should take a full charge in about 4 hours or less.If it takes longer-the battery's no good. Source(s): Been doing this over 30 yrs.eport Abuse. On a good battery. I would still drive it home and put it on a slow charge for as long as 24 hours 4 a deep saturating charge. If the battery is 4 years or older, take it yo a shop and have it tested.