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Battery Charger Circuits

High Voltage Battery Charger Circuit

Last Updated on July 25, 2026 by Swagatam 62 Comments

high voltage battery charger circuit compressed

In this post I have explained a simple automatic High Voltage Battery Charger Circuit which can be used for an automatic charging control of any preferred high voltage battery bank such as a 360V battery bank. The idea was requested by “resonance”. Circuit Objectives and Requirements Circuit Diagram The Design The figure above shows a […]

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

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

100V to 450V Solar Battery Charger Circuit with Automatic cut-off using MOSFET

Last Updated on July 24, 2026 by Swagatam Leave a Comment

Hello friends, today we will discuss about a very interesting high voltage solar panel battery charger circuit. Many people ask how to safely charge battery from high voltage PV panels like 100V to 450V. So today I am explaining the complete step by step working of this circuit. Power On and Initial SCR Latching Assuming […]

Filed Under: Battery Charger Circuits Tagged With: 100V, 450V, Automatic, Battery, Charger, Solar

LC Resonance Calculator for EV Battery Charger Circuits

Last Updated on July 11, 2026 by Swagatam Leave a Comment

This calculator helps estimate resonant frequency or compensation capacitor for a wireless EV charging primary coil. It is for first-step design and learning, not final tuning… Calculator by homemade-circuits.com EV Wireless LC Resonance Calculator EV Wireless LC Resonance Calculator Calculate: Resonant Frequency (Hz)Capacitance (µF)Inductance (µH) First Value: Primary Inductance µHCapacitance µFFrequency Hz Second Value: Primary […]

Filed Under: Automobile Electronics, Battery Charger Circuits Tagged With: Battery, Calculator, Charger, EV, Tool, Wireless

Battery Deep Discharge Protection Circuit

Last Updated on June 11, 2026 by Swagatam 119 Comments

preventing battery from deep discharge compressed

In this post I have explained how to build a battery deep discharge protection circuit which can be used for protecting any type of battery from over discharge through a connected load. Normally, we are mostly worried about battery getting over charged, and forget about a situation where the battery can get over discharged by […]

Filed Under: Battery Charger Circuits Tagged With: Battery, Deep, Discharge, Protection

Automatic Battery Full Cut-Off Latching Circuit with Trickle Charging

Last Updated on June 3, 2026 by Swagatam Leave a Comment

In this post I will explain one useful SCR relay battery overcharge cut off circuit, which also has automatic latching and small trickle charging feature, so now when battery becomes fully charged then charger disconnects automatically, but still a tiny current keeps going into battery slowly. Main Features Main interesting thing here is the SCR […]

Filed Under: Battery Charger Circuits Tagged With: Automatic, Battery, Charging, Full, Latching, Trickle

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