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Precise Battery Capacity Tester Circuit – Backup Time Tester

Last Updated on October 26, 2022 by Swagatam 4 Comments

The precise battery capacity tester circuit explained in the following article can be used for testing the maximum backup capacity of any rechargeable battery in real time. By Timothy John […]

Filed Under: Battery Chargers

Simple Ni-Cd Battery Charger Circuits Explored

Last Updated on September 26, 2023 by Swagatam 116 Comments

The post discusses many simple NiCd charger circuits with an automatic overcharge protection and a constant current charging. When it comes to correctly charging a Nickel-Cadmium cell, it is strictly […]



Filed Under: Battery Chargers, Mini Projects, Simple Circuits

Regulated Car Battery Charger Circuit for Garage Mechanics

Last Updated on August 28, 2023 by Swagatam 59 Comments

If you are an automotive technician, vehicle technician, or a motor mechanic, you may find this cheap yet powerful car battery charger circuit extremely handy, as it can be used […]

Filed Under: Battery Chargers

3 Smart Li-Ion Battery Chargers using TP4056, IC LP2951, IC LM3622

Last Updated on December 16, 2022 by Swagatam 60 Comments

These smart, intelligent battery charger will charge a Li-IOn battery rapidly by monitoring 3 crucial parameters, which are constant current, constant voltage and constant 25 degrees Celsius temperature. The post […]

Filed Under: Battery Chargers, Mini Projects

Multiple Battery Charger Circuit using Dump Capacitor

Last Updated on July 6, 2019 by Swagatam 61 Comments

In this article we will try to build an automatic battery charger circuit using dump capacitor concept for self detecting and charging a multiple set of batteries. The idea was […]

Filed Under: 324 IC Circuits, 555 IC Circuits, Battery Chargers

Timer Based Cell Phone Charger Circuit

Last Updated on July 6, 2019 by Swagatam 50 Comments

A simple cell phone charger with timer circuit is presented in the following article, which could be used for charging a given Mobile phone for a specified predetermined length of […]

Filed Under: 4060 IC Circuits, Battery Chargers, Timer and Delay Relay



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