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Accumulators Explained [Rechargeable Batteries]

Last Updated on March 11, 2023 by Swagatam Leave a Comment

Unlike dry batteries, whose stored electrical energy can only be used once, accumulators have the immense advantage of reversibility, which translates into the possibility of a series of charge/discharge cycles. […]

Filed Under: Battery Chargers

Laptop Power Bank Circuit

Last Updated on June 8, 2022 by Swagatam 15 Comments

The following post explains how to build a simple laptop power bank circuit which can be used for charging a laptop battery during travelling or during outdoor trips. This device […]



Filed Under: Battery Chargers

Gel Cell Battery Charger Circuit [Constant Current, Constant Voltage]

Last Updated on May 9, 2022 by Swagatam 34 Comments

In this post we will learn what are gel cell batteries and also learn how to build a specialized charger for charging a gel cell battery, with full calculations. The […]

Filed Under: Battery Chargers

3 LED Battery Level Indicator Circuit

Last Updated on September 5, 2021 by Swagatam 15 Comments

The proposed 3 LED battery level indicator can be typically used for monitoring a 12 V lead acid battery charge level, through 3 distinct LED illumination. The entire circuit is […]

Filed Under: Battery Chargers

Battery Deep Discharge Protection Circuit

Last Updated on July 21, 2021 by Swagatam 54 Comments

In this post we learn how to build a battery deep discharge protection circuit which can be used for protecting any type of battery from over discharge through a connected […]

Filed Under: Battery Chargers

Types of Batteries Explained [NiCd, NiMH, Lead Acid, Li-Ion]

Last Updated on March 28, 2022 by Swagatam Leave a Comment

In this post we discuss the main types of batteries that are widely used in today’s world for almost all important applications, ranging from cars, automobiles mobile phones, airplanes, industries, […]

Filed Under: Battery Chargers

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