Arduino based Battery Over Discharge Protection Circuit

In this post, we are going 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, … Read moreArduino based Battery Over Discharge Protection Circuit

Battery Full Charge Indicator Circuit using Two Transistors

This little circuit will alert the user regarding a battery reaching its full-charge level (over charge) while it’s being charged, by illuminating an LED. The circuit uses just a couple of transistors as the main active components. Main Feature The main feature of this design is not only its mini design but also its supply … Read moreBattery Full Charge Indicator Circuit using Two Transistors

Opamp Low High Battery Charger Circuit

The post discusses a two opamp low high battery charger controller circuit which is not only accurate with its features but also allows a hassle free and quick setting up of its high/low cut-off threshold limits. The idea was requested by Mr. Mamdouh. Circuit Objectives and Requirements I’ve got the idea, please bear with me, … Read moreOpamp Low High Battery Charger Circuit

18V Cordless Drill Battery Charger Circuit

In this post we learn how to build and use a 18V battery charger circuit for a cordless drill machine. The idea was requested by Mr. Chibuzo. Technical Specifications Here is the issue. I don’t have any cordless drill battery charger at all. But I have variable voltage car battery charger. I did try to … Read more18V Cordless Drill Battery Charger Circuit

How to Set IC 741 for Auto Cut-oFF

The post explains how to set or adjust an opamp 741 IC based battery charger circuit for implementing an automatic cut-off for the connected battery once it reaches the full-charge level. Since I have many such IC 741 battery charger circuits posted here, the instructions will be helpful for correctly setting up most of those … Read moreHow to Set IC 741 for Auto Cut-oFF

220V Lithium-Ion Battery Bank Charger Circuit

The post narrates an SCR based 220V Li-ion Battery Bank charger circuit with an automatic over charge cut-off feature for operating with an electric car. The idea was requested by Mr. George. Circuit Objectives and Requirements I’m George From Australia trying to convert small car into an electric car. The attached PDF show the configuration … Read more220V Lithium-Ion Battery Bank Charger Circuit