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Charger

Parallel Battery Charger Circuits Explained

Last Updated on May 17, 2026 by Swagatam 19 Comments

In this post I have explained two methods of connecting batteries in parallel. The first one below deals with changeover circuit using SPDT switches to charge multiple batteries individually or collectively. These may be connected in parallel using a single battery charger and through a manual SPDT changeover switch bank. The seconds design talks about […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Circuits, Explained, Parallel

48V Solar Battery Charger Circuit with High/Low Cut-off

Last Updated on May 17, 2026 by Swagatam 225 Comments

48vsolarbatterychargercircuit

In this post I have explained a 48V solar battery charger circuit with high, low cut-off feature. The thresholds are adjustable through individual presets. The idea was requested by Mr. Deepak. Technical Specifications Hi Swagatam, Thank you for UPS relay circuit. I am trying to build it very soon. I will update you the result […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: 48V, Battery, Charger, High, Solar

12V, 5 Amp SMPS Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 500 Comments

12v2B52Bamp2Btransformerless2Bbattery2Bcharger2Bcircuit

In this article we study a simple flyback based converter design which is implemented as an SMPS 12V, 5amp battery charger power supply, without using a iron core transformer. How it Works The proposed 12V, 5 amp smps battery charger circuit employs a flyback converter topology which results in the required smps based high current, […]

Filed Under: Battery Charger Circuits, SMPS and Converters Tagged With: 12V, Battery, Charger, SMPS

Regulated Car Battery Charger Circuit for Garage Mechanics

Last Updated on May 17, 2026 by Swagatam 91 Comments

car battery charger for garage mechanics

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 for charging all types of car and motorcycle battery overnight with minimum effort. This charger is specially suited for garages since it has a rugged […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Garage, Mechanics, Regulated

Simple Ni-Cd Battery Charger Circuits Explored

Last Updated on May 17, 2026 by Swagatam 116 Comments

Nicd Charger circuit

In this post I have explained 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 recommended that the charging process is halted or cut off as soon as it reaches the full charge level. Not following this […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Circuits, Explored, Simple

Op Amp Battery Charger Circuits with Auto Cut Off

Last Updated on May 17, 2026 by Swagatam 412 Comments

In this post I have explained a two op amp IC 741 and LM358 based auto cut off battery charger circuits which are not only accurate with its features but also allows a hassle free and quick setting up of its high/low cut-off threshold limits. High current batteries can e also charged using these circuits. […]

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

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