This article shows you how to build a simple circuit to protect a car battery lead acid battery when it is not being used. The circuit helps the battery stay charged for longer and keeps it healthy. Building circuits with car batteries can be dangerous. Experiment with adult supervision or someone who knows how to […]
Battery Charger Circuits
Simple Battery Saver Circuit
Some electronics, like remote controls and calculators, have a special circuit to protect the batteries. This circuit helps keep the batteries from draining too quickly if you accidentally leave the device on. But even with this circuit, the batteries will still slowly lose power over time. Objective of the Circuit The discussed battery saver circuit […]
Simple Dual Battery Charging Circuit
Ever run out of batteries for your device, but have some spares that are the wrong size? This post shows you how to build a circuit that lets you charge two different batteries using just one power source. It uses a special chip IC 555 and other basic parts to make sure both batteries get […]
Simple Constant Voltage, Constant Current Battery Charger Circuit
This article shows you how to build a smart battery charger for a 12V battery! This charger uses a common chip called the LM317 and keeps two things steady: voltage and current. Voltage: This makes sure the battery does not get overloaded. Current: This keeps the battery charging at a safe speed. What is a […]
High Current Solar Battery Charger Circuit for 12V, 24V, 48V Batteries
This post shows you how to build a solar panel charger that can work with different types of batteries. It can charge 12V, 24V and even 48V batteries by changing a small part zener diode on the circuit. This makes it a very versatile charger for many uses. What is a High Current Solar Battery […]
Simple Power Bank Circuit for Charging Mobile Phones
This article shows you how to build your own portable phone charger, like the ones you can buy at the store. This is a great way to keep your phone charged when you are out and about. These chargers come in all sizes, from small ones that fit in your pocket to bigger ones that […]