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Battery

BQ24295 Smart Battery Charger IC with Boost + OTG

Last Updated on May 18, 2026 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

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

Last Updated on May 17, 2026 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

NiMH Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 63 Comments

NiMHCharger

A single state-of-the-art chip, a transistor and a few other inexpensive passive components are the only materials required for making this outstanding, self regulating, over charge controlled, automatic NiMH battery charger circuit. Let’s study the whole operation explained in the article. Main Features: How the Charger Circuit Works Referring to the diagram we see a […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, NiMH

One Transistor Automatic Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 104 Comments

simplestbatterychargercircuit

This one transistor cheap battery charger circuit is designed to automatically switch OFF the supply to the battery as soon as the battery has reached its full charge level. A very simple single transistor automatic battery charger circuit is I have I have explained in this article, which uses just a single transistor for the […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charger, Transistor

Self Regulating Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 263 Comments

In this post I have explained how a neat little self regulating automatic battery charger circuit can be made using just two inexpensive transistors. This circuit will automatically regulate the charging supply to the battery depending on its charge level, by switching the input supply ON and OFF periodically. How it Works As can be […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Regulating, Self

Lead Acid Battery Charger Circuits

Last Updated on May 17, 2026 by Swagatam 324 Comments

highcurrentbatterycharegrcircuit

The lead acid battery charger circuits I have explained in this article can be used for charging all types of lead acid batteries at a specified rate. This article explains a few lead acid battery charger circuits with automatic over charge, and low discharge cut off. All these designs are thoroughly tested and can be […]

Filed Under: Battery Charger Circuits Tagged With: Acid, Battery, Charger, Circuits, Lead

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