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Battery Charger Circuits

Charging a Cellphone battery with a Laptop Battery

Last Updated on May 17, 2026 by Swagatam 5 Comments

cellphonechargerfromlaotpbatt 1

The post presents a simple circuit that may be used for charging a cellphone battery with a laptop battery. The idea was requested by Mr. Gyashuddin. Recharging Cellphone Battery with Laptop Battery hello sir my self md gyashuddin I want to know that it is passible to built a circuit which can ,recharge my cell […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Cellphone, Charging, Laptop

Self Optimizing Solar Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 261 Comments

solarmpptchargercircuit

In this post I have explained a simple IC 555 based self optimizing solar battery charger circuit with buck converter circuit that automatically sets and adjusts the charging voltage in response to the fading sunlight conditions, and tries to maintain an optimal charging power for the battery, regardless of the sun ray intensities. Using a […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: Battery, Charger, Optimizing, Self, Solar

Lithium Polymer (Lipo) Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 73 Comments

24vbatterychargercircuit

In this post I have explained a simple lithium polymer (Lipo )battery with over charge cut off feature. The idea was requested by Mr. Arun Prashan. Charging  a Single Lipo Cell with CC and CV I came across your work on “​Bicycle Dynamo Battery Charger Circuit” in Homemade circuit design blog. It was really informative. I […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Lipo, Lithium, Polymer

High Voltage Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 62 Comments

high voltage battery charger circuit compressed

In this post I have explained a simple automatic High Voltage Battery Charger Circuit which can be used for an automatic charging control of any preferred high voltage battery bank such as a 360V battery bank. The idea was requested by “resonance”. Circuit Objectives and Requirements I found all your circuit and projects interesting but […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, High, Voltage

Timer Based Cell Phone Charger Circuit

Last Updated on May 17, 2026 by Swagatam 70 Comments

timer2Bcharger

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 time. The idea was requested by Mr. Saad. Circuit Objectives and Requirements Could you design me this charger circuit ? Input 230V 60 Hz, and the […]

Filed Under: Battery Charger Circuits, Timer and Delay Relay Tagged With: Based, Cell, Charger, Phone, Timer

High Current Wireless Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 59 Comments

wireless

In this article I have explained regarding how to design and make your own customized high current wireless battery charger circuit using wireless power transfer concept. Introduction In many of my earlier articles I have comprehensively discussed wireless power transfer, in this article we will go a step ahead and try to learn how to […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Current, High, Wireless

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