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Battery Charger Circuits

PWM Solar Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 211 Comments

SMPSchargercircuit

This simple, enhanced, 5V zero drop PWM solar battery charger circuit can be used in conjunction with any solar panel for charging cellphones or cell phone batteries in multiple numbers quickly, basically the circuit is capable of charging any battery whether Li-ion or Lead acid which may be within the 5V range. Using TL494 for […]

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

High Current Li-Ion Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 205 Comments

universalli ionchargercircuit

In this post I have explained a high current Li-Ion battery charger circuit which can be used for charging any high current, such as 2S3P, 3S2P battery packs. It can be also used for charging other similar high Ah rated Li-ion battery from a car or a truck battery. The idea was requested by Mr. […]

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

Battery Charging Fault Indicator Circuit

Last Updated on May 17, 2026 by Swagatam 130 Comments

li ionfaultindicator

In this article I have explained a battery status indicator circuit which can be also used as a battery charging fault indicator circuit. The idea was requested by Mr. Faizan. The Design The idea presented here takes care of all the parameters required for charging a battery ideally and safely. Referring to the shown battery […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charging, Fault, Indicator

Super Capacitor Charger Theory and Working

Last Updated on May 17, 2026 by Swagatam 241 Comments

supercapacitorchargercircuit

In this post I have explained a super capacitor charger circuit for charging super capacitors which converts a 12V car battery voltage to an elevated 16V for charging a bank of super capacitors. The idea was requested by Miariver. Super Capacitor for Peak Power Compensation  First thanks for keep publishing this blog is very helpful, […]

Filed Under: Battery Charger Circuits Tagged With: Capacitor, Charger, Super, Theory, Working

Battery Charger for Positive Earth Cars

Last Updated on May 17, 2026 by Swagatam 4 Comments

positive battery charger circuit

The post presents an 6v or 12v battery charger circuit for positive earth cars which could be used for upgrading 6V positive earth cars, facilitating an external 12V battery to be used in them along with the existing 6V battery with a common positive earth body. The idea was requested by Mr. Joe Ceretti. 6V […]

Filed Under: Automobile Electronics, Battery Charger Circuits Tagged With: Battery, Cars, Charger, Earth, Positive

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

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