Led Emergency Light Circuit With Battery Overcharge Protection

The circuit charges the battery as far as it has a voltage below the threshold limit.

Led emergency light circuit with battery overcharge protection.

A 12v 7 2ah battery can be used to light up to 100 leds. You can find the circuit here. That does not make it good but its easy and cheapish and works reasonably well. So i took the lamp for checking repairing.

Here the circuit for a 6v automatic battery charger circuit with overcharge protection led charging indicator and current limiting feature. Below is a lead acid battery charger circuit found in very similar form all over the web. Over charging is taken care and protected by t1. The circuit controls the charging of the battery by taking feedback of the voltage across the battery terminals.

Automatic led emergency light with under voltage cut off protection. Hope with the above guide line you can make your light work successfully. This led emergency light circuit can be divided into two parts. This is manifested by the light emitting diode led which turned on when the battery is fully charged.

All current ratings and voltage ratings are perfectly calculated with basic and clear instructions. A further modified version is also available where under voltage cut off protection is provided for the led emergency light circuit. One part is the led lamp light circuit and the other is the battery charger circuit. Here you can see the whole story in images.

First part is used to drop down the 220v ac voltage into 8v regulated dc with the help of transformer and bridge rectifier. Light led strip etc when input power is removed. Since this circuit diagram does not have battery overcharging protection it is advisable to connect a 13v zener diode across battery terminals. Automatic led emergency lamp circuit with overcharge protection for 12v lead acid battery.

And second part consists of relay and rechargeable battery which is used to lighten the leds during power failure. The design objectives were accomplished because the lantern can successfully provide a relatively good illumination for over three hours and the battery over charge protection circuit prevents the battery from being over charged. With this circuit over night the battery will get charged fully. The article describes an led emergency light circuit with advanced features such as over charge battery cut off day time auto disable and need less to say that the circuit switches on the leds automatically when ac mains fails and reverts to charging mode when power is restored.

The post explains an led emergency light circuit with sophisticated capabilities such as over charge battery cut off day time auto disable and need less to say that the circuit switches on the leds instantly when ac mains goes wrong and reverts to charging mode when power is renewed.