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Battery Charger Circuits

Battery Charger Circuit using Fixed Resistors

Last Updated on May 17, 2026 by Swagatam 30 Comments

hystresist

This universal automatic battery charger circuit is extremely versatile with its functioning and can be adapted for all types of battery charging and even for solar charge controller application. Universal Battery Charger Main Features A universal battery charger circuit must have the following main features included in it: 1) Automatic battery full charge cut-off, and […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Fixed, Resistors

Arduino based Battery Over Discharge Protection Circuit

Last Updated on May 17, 2026 by Swagatam 37 Comments

over2Bdischarge2Bprotection

In this post, I will show how to construct a over discharge protection circuit for 12v battery using Arduino   which can protect 12V SLA battery against over discharge, and also protect the connected load from over voltage in case of overcharged battery is connected. Understanding Battery Charge/Discharge Rates All the batteries have natural decline, […]

Filed Under: Battery Charger Circuits Tagged With: Arduino, Based, Battery, Discharge, Over, Protection

Camper, Motorhome Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam Leave a Comment

offshore 2

In this post I have explained a battery charger circuit specifically designed for camper and motorhome applications, so it can serve as an effective camper/motorhome battery charger circuit operating through any shore power supply source. The idea was suggested by “music girl”. Battery Charger for Motorhomes Based on this customized battery charger circuit I would […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Camper, Charger, Motorhome

Triac Battery Charger Circuit

Last Updated on May 17, 2026 by Swagatam 57 Comments

triac battery charger circuit 750x445

A triac based battery charger replaces a normal relay for automatically cutting off power to the battery very efficiently. In this post I have explained a simple a battery charger circuit using a triac auto shut-off facility. The circuit can be used for charging any high current, high AH types battery with a full-charge auto […]

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

How to Select the Right Charger for Li-Ion Battery

Last Updated on May 17, 2026 by Swagatam 3 Comments

licharger

In this discussion we try to learn the right procedure for selecting a charger for a Li-ion battery. The question was raised by Mr. Akshay. Li-Ion Charger Related Question I have a 5000mAh Li-ion battery. Can i select a charger for my Li-ion battery having the following specifications, the product is available on ebay? I […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charger, Right, Select

Use this Battery for 50 Years without Charging

Last Updated on May 17, 2026 by Swagatam 4 Comments

betavolt battery

A novel battery technology, developed by Beijing-based firm Betavolt, has been introduced. It boasts an astounding 50-year lifespan without the need for maintenance or charging. With 63 radioactive isotopes contained in a module the size of a penny, this ground-breaking nuclear battery is a leader in the field of atomic energy miniaturization. https://twitter.com/Byron_Wan/status/1746801325722239367/photo/1 Advancements in […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Charging, without, Years

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