what happens when battery is fully charged?
Sign Up to our social questions and Answers Engine to ask questions, answer people’s questions, and connect with other people.
Login to our social questions & Answers Engine to ask questions answer people’s questions & connect with other people.
Lost your password? Please enter your email address. You will receive a link and will create a new password via email.
Please briefly explain why you feel this question should be reported.
Please briefly explain why you feel this answer should be reported.
Please briefly explain why you feel this user should be reported.
UPS use different charging regimes to charge batteries and when a battery reaches full charge, its tendency is to draw very little current.
The main difference to note with UPS using lead-acid batteries (currently most do) is the voltage that the batteries are charged at is 13.5 -13.7VDC per battery. This is referred to as “Standby” use where the battery is tricle charged most of the time.
The other type of charging is referred to a “Cycle” (such as a car, forklift or golf buggy for example) where once the battery is charged ( to around 14.5VDC) where the charger switches off and the device can be disconnected for use until the battery runs flat and needs to be connected to the charger again. This type of charging takes a few hours to less than a day as the battery would become damaged if kept at this voltage by the charger for an extended period of time.
A ‘yes’ to the four answers. The purpose of a UPS is to provide interim power for an object when the normal power supply suddenly fails, whether it be a bench box or a huge battery bank. A small UPS provides power for a short period so items like a PC can be shut down. They can also run emergency lighting systems. Larger ‘UPS’ systems can be found in power stations and switching stations for ‘cold starting’ or as the permanent d.c. for operating switchgear and as back-up during total power cuts.
Clouding the issue now are people buying a UPS as a portable power supply and not keeping it permanently plugged into the live mains as it should be.