Battery Charger Circuits

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 […]

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 […]

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 […]

This high current battery charger circuit is a simple yet effective with automatic cut off at a preset voltage. The TIP35 transistor acts as a voltage follower ensuring that the charging voltage is stable and constant making it suitable for charging high capacity lead acid batteries. What is a High Current Battery Charger Circuit: A […]

Want to make your own charger for lithium ion (Li-ion) batteries, like the ones in phones and laptops? It can be a fun way to learn how electronics work. This article will show you how to build a basic charger using a common chip called the IC LM317. We will also talk about how batteries […]