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Charger

BQ24295 Smart Battery Charger IC with Boost + OTG

Last Updated on May 29, 2025 by Swagatam Leave a Comment

This BQ24295 IC is like a super smart charger chip. This one is not just for charging battery, but also doing many other jobs like boost converter, USB detection, power path control, and even OTG (host power supply). So we can say that this is a full battery charging and power management IC. Let us […]

Filed Under: Battery Charger Circuits, Datasheets and Components Tagged With: Battery, Boost, BQ24295, Charger, OTG, Smart

Real MPPT Solar Charger Circuit Using Arduino, LCD, and Manual/Auto Switch

Last Updated on May 19, 2025 by Swagatam 13 Comments

So in this article we are trying to make a true MPPT solar charger project using Arduino which will charge a 12V battery from a solar panel and will use MPPT logic to always extract maximum power from the solar panel. That means that even when sunlight changes, we try to adjust PWM duty cycle […]

Filed Under: Arduino Projects, Solar Controller Circuits Tagged With: Arduino, Charger, LCD, MPPT, Real, Solar

3-Step Automatic Fast Battery Charger/Controller Circuit

Last Updated on April 30, 2025 by Swagatam 268 Comments

3stepbatterychargercircuit

Generally it is noticed that while charging batteries people hardly pay any special attention toward the procedures. For them charging a battery is simply connecting any DC supply with matching voltage with the battery terminals. A fast battery charger circuit charges a battery with enhanced speed so that it is charged in less time than the specified period. […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Controller, Fast, Step

12V Battery Charger Circuits [using LM317, LM338, L200, Transistors]

Last Updated on January 18, 2025 by Swagatam 200 Comments

317CIRCUIT

In this article I will be discussing a list of simple 12V battery charger circuits which are very easy and cheap by its design yet extremely accurate with its output voltage and current specs. All the designs presented here are current controlled meaning their outputs will never go beyond a predetermined fixed current level. UPDATE: […]

Filed Under: Battery Charger Circuits Tagged With: 12V, Battery, Charger, Circuits, LM317, LM338

9 Simple Solar Battery Charger Circuits

Last Updated on January 6, 2025 by Swagatam 526 Comments

garden2Blight

Simple solar charger circuits are small devices which allow you to charge a battery quickly and cheaply, through solar panels. A simple solar charger circuit must have 3 basic features built-in: In this post I will comprehensively explain nine best yet simple solar battery charger circuits using the IC LM338, transistors, MOSFET, buck converter, etc […]

Filed Under: Solar Controller Circuits Tagged With: Battery, Charger, Circuits, Simple, Solar

Make this 18V Cordless Drill Battery Charger Circuit

Last Updated on January 3, 2025 by Swagatam 60 Comments

pcb

In this post I have explained how to build and use a 18V battery charger circuit for a cordless drill machine. The idea was requested by Mr. Chibuzo. Technical Specifications The Design Whether it’s a lead acid battery, a Ni-Cd or a Li-ion, this multipurpose battery charger shown below can be applied for any of […]

Filed Under: Battery Charger Circuits Tagged With: 18V, Battery, Charger, Cordless, Drill

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