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Battery

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

Designing a Customized Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 164 Comments

LM338 basic adjustable power supply circuit diagram

I have designed and published a variety of battery charger circuits in this website, however the readers often get confused while selecting the right battery charger circuit for their individual applications. And I have to explicitly explain each of the readers regarding how to customize the given battery charger circuit for their specific needs. This […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Customized, Designing

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

3 Smart Li-Ion Battery Chargers using TP4056, IC LP2951, IC LM3622

Last Updated on May 17, 2026 by Swagatam 60 Comments

TPelectrical

These smart, intelligent battery charger will charge a Li-IOn battery rapidly by monitoring 3 crucial parameters, which are constant current, constant voltage and constant 25 degrees Celsius temperature. The post elaborately explains 3 Hi-End, automatic, advanced, single chip CC/CV or constant current, constant voltage 3.7V Li-Ion battery charger circuits, using specialized Hi-End IC TP4056, IC […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Chargers, LM3622, LP2951, Smart, TP4056

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