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.
Report Abuse. If the battery is a sealed one then it should be OK. A full charge should take about 12-18 hours. If it will not start your car after that then it is dead and you will need a trip to Halfords to replace it.Matthew Myatt Â· 6 years ago.ating Newest Oldest. Best Answer: Depending on your charging system and battery capacity, it could take between 6 and 12 hours. It is better not to let them go flat though.