How Do You Build An Uninterruptible Power Supply?
An uninterruptible power supply, or UPS, is crucial to protecting critical data that would be otherwise lost in the event of a power outage. Here’s how to build your own uninterruptible power supply. Choose your batteries. As weight generally isn’t an issue, a UPS almost always uses lead acid batteries, due to their low price and high capacity. Sealed Lead Acid (SLA) batteries are easily found, cheap, and easy to use. However, wet cell batteries can give much superior performance. Due to their hydrogen venting and need for topping up, wet batteries should only be used by those familiar with their characteristics. Select a power supply to charge the batteries with. Unless the charger is particularly sophisticated (and expensive), it will likely be a “float” charger that delivers constant voltage equal to the particular battery’s fully-charged voltage. This means that you will have to manually top-up your batteries’ charge by increasing the voltage for a few hours every 6 months. Check t
