So today's article we are going to make Auto cut lithium-ion battery charger circuit. By the way last year I made a circuit that can charge a lithium-ion battery and after a full charge, the indicated green LED and on the charging time circuit indicate red LED but there was a problem with that circuit there was no auto cut option.
What happens if Lithium battery does not have a auto cut option?
If you are charging a lithium-ion battery and the circuit doesn't have the auto cut option then it is dangerous. Because the circuit only indicates that your battery is fully charged. now, this is your responsibility to remove the battery after full charge because that circuit doesn't have auto cut option. It will continuously charge the battery even after the green LED will be glowing This thing makes it dangerous. & If you forget for a long time battery can explode at any time.So that's why I make an upgraded version of the previous circuit and it's come with an auto cut option. This battery charger circuit provides the automatic cut off the facility when the battery gets fully charged.
So what are you waiting for..???
let's see which components we need for making this auto-cut lithium-ion battery charger circuit. For building this project, the below components are needed. These are easily available in the market.
Components -:
BC547 Transistor or Any NPN Transistor
10K Resistor
1K Resistor *2
10K Preset
10Uf 50V Capacitor
Red & Green LED
5V Relay
Before the use of the circuit, you need to adjust the auto cut-off voltage range for the auto cut
This adjustment is done by the 10k preset and a multimeter connected with the output terminals that go to the battery. First, you have to give the power supply in the circuit and move the preset till the green LED is ON. Once the auto cut voltage is set the circuit is ready to use.
Working of Auto Cut-Off Battery Charger Circuit:
In the above circuit, whole charging is driven by BC547 Transistor and relay during charging the circuit takes Input form charger circuit shown above. After the battery reaches a certain level the transistor BC547 is Tuned ON and it's driving a relay that turns on and changes the COM pin's Link from NC to NO which is connected to the Green LED that will start glowing after the relay change over indication the battery charging completion.
So today's article we are going to make Auto cut lithium-ion battery charger circuit. By the way last year I made a circuit that can charge a lithium-ion battery and after a full charge, the indicated green LED and on the charging time circuit indicate red LED but there was a problem with that circuit there was no auto cut option.
What happens if Lithium battery does not have a auto cut option?
If you are charging a lithium-ion battery and the circuit doesn't have the auto cut option then it is dangerous. Because the circuit only indicates that your battery is fully charged. now, this is your responsibility to remove the battery after full charge because that circuit doesn't have auto cut option. It will continuously charge the battery even after the green LED will be glowing This thing makes it dangerous. & If you forget for a long time battery can explode at any time.So that's why I make an upgraded version of the previous circuit and it's come with an auto cut option. This battery charger circuit provides the automatic cut off the facility when the battery gets fully charged.
So what are you waiting for..???
let's see which components we need for making this auto-cut lithium-ion battery charger circuit. For building this project, the below components are needed. These are easily available in the market.
Components -:
BC547 Transistor or Any NPN Transistor
10K Resistor
1K Resistor *2
10K Preset
10Uf 50V Capacitor
Red & Green LED
5V Relay
Before the use of the circuit, you need to adjust the auto cut-off voltage range for the auto cut
This adjustment is done by the 10k preset and a multimeter connected with the output terminals that go to the battery. First, you have to give the power supply in the circuit and move the preset till the green LED is ON. Once the auto cut voltage is set the circuit is ready to use.
Working of Auto Cut-Off Battery Charger Circuit:
In the above circuit, whole charging is driven by BC547 Transistor and relay during charging the circuit takes Input form charger circuit shown above. After the battery reaches a certain level the transistor BC547 is Tuned ON and it's driving a relay that turns on and changes the COM pin's Link from NC to NO which is connected to the Green LED that will start glowing after the relay change over indication the battery charging completion.
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