JSCalc

Your power supply doesn’t convert 100% of the watts pulled from the wall. During the process, some of the AC electricity turn into heat. How … Read More

A simple component wattage estimator can’t answer the question, but a power supply headroom calculator does. It doesn’t tell you how many watts your processor … Read More

A PC’s power supply is among the last things to plan when building your system, and among the simplest to screw up. Too small a … Read More

When the grid flickers, you don’t want your work lost, so you buy a UPS. But there’s a trap in its specs that waits for … Read More

The primary question around backup power is “how long will it last?” That’s where a UPS runtime calculator comes in. If it gets me through … Read More

The single most important part of constructing an off grid solar system is sizing the battery bank. This is because during the day, solar panels … Read More

Sometimes a battery won’t start your device and you might feel frustrated, but remember: it wasn’t “bad luck,” it was because the battery self-discharged. That … Read More

All batteries are inefficient. Charging up any kind of storage system result in inefficiencies. These include losses due to voltage, heat, and chemical resistance. These … Read More

A battery are really just a bunch of cells, each one containing an ideal voltage source and a secret resistor. As soon as you use … Read More

How many times will your battery pack be able to move energy around and last? How long? Datasheets include a cycle life rating as a … Read More