Battery charger indicator based LM393

Battery charger indicatorDescription of battery charger indicator:
The circuit above will make your simple battery charger look sophisticated. This circuit is a charging indicator for battery charger. Its used to check whether the battery is charging or not.  Voltage comparator LM393 IC is the heart of this  Battery charger indicator circuit.

D1 LED stays lit when there are at least 25 milli-amps of current which flows to the battery. This circuit is designed specifically for 12V battery with a load current of 1A. With a little modifying component values​​, load current and voltage can be changed.

Battery charger indicator parts list :

R1 : 1M
R2 : 2.2K
R3 : 1 ohm 0.5 W
R4 : 10K
R5 : 1K
D1 : 1N5819
D2 : Led
IC1 LM393

Power supply is an electronic device that supplies electric energy to an electrical load. The primary function of a power supply is to convert one form of electrical energy to another and, as a result, power supplies are sometimes referred to as electric power converters. Some power supplies are discrete, stand-alone devices, whereas others are built into larger devices along with their loads. Examples of the latter include power supplies found in desktop computers and consumer electronics devices.

Tags: battery charger indicator Battery charger indicator circuit charger indicator circuit indicator for battery charger LM393

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  1. author

    Andry5 years ago

    if i want to use this schematic for battery charger indicator but with 7.5 Volt. what component that i must change?


    • author

      Paul4 years ago

      Hi, did you have any luck adjusting resistor value for this circut? I’m looking to build a 6v equivalent.

      Let me know, thanks in advance.