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Battery Charger Circuits

Smart Buck-Boost MPPT Solar Charger Circuit for 12V 24V Battery

Last Updated on May 17, 2026 by Swagatam 2 Comments

In this post we are going to learn how we can make one real working smart solar battery charger circuit which can do MPPT charging. We are using Arduino Nano as the brain for controlling everything. We will also use INA219 sensor module so that we can read the solar voltage and current properly. And […]

Filed Under: Battery Charger Circuits, Solar Controller Circuits Tagged With: Boost, Buck, Charger, MPPT, Smart, Solar

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

DIY Power Bank using T856-C Module? How to Connect

Last Updated on July 24, 2026 by Swagatam 9 Comments

So here we are talking about one small board called T856-C. We use this little module when we want to make one DIY power bank at home, like those we use to charge phones and other USB things. It can charge one 3.7V Li-ion battery like 18650 and also give us 5V output to run […]

Filed Under: Battery Charger Circuits Tagged With: Bank, Connect, Module, Power, T856

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

Accumulators Explained [Rechargeable Batteries]

Last Updated on May 17, 2026 by Swagatam 10 Comments

accumulator with electrolyte and electrodes

Unlike dry batteries, whose stored electrical energy can only be used once, accumulators have the immense advantage of reversibility, which translates into the possibility of a series of charge/discharge cycles. This means that they can undergo a series of charge/discharge cycles. They are found in applications that may require more power, such as starting the […]

Filed Under: Battery Charger Circuits Tagged With: Accumulators, Batteries, Explained, Rechargeable

Laptop Power Bank Circuit

Last Updated on May 17, 2026 by Swagatam 63 Comments

laptop power bank configuration compressed

In this post I have explained how to build a simple laptop power bank circuit which can be used for charging a laptop battery during travelling or during outdoor trips. This device can be specifically useful on situations or places where an AC mains outlet is unavailable or difficult to find. Why Laptops Need a […]

Filed Under: Battery Charger Circuits Tagged With: Bank, Laptop, Power

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