Simple 18650 Battery Charger Circuit Diagram

You can use this circuit to charge 12v sla battery or 12v gel cell battery and so on.

Simple 18650 battery charger circuit diagram. Charging li ion battery can be critical a li ion battery as we all know needs to be charged under controlled conditions if it s charged with ordinary means could lead to damage or even explosion of the battery. If the battery is partially discharged full charge will be attained in one hour. I was hoping sir can help me on how to make a solar charger smart. Here is a tried and tested sample circuit of a li ion battery charger that can be used to charge any 3 7v li ion battery using a 5vdc usb solar panel power supply.

Here is the circuit diagram of a simple and straight forward 12 v battery charger circuit with diagram. I am an electric and electronics final year student. It gives 12 volt and 5 amps current for quick charging of the battery. Power bank circuit diagram.

The circuit uses a 0 14 volt 5 ampere step down transformer and a 10 amps bridge rectifier module to convert ac to dc. I mean both theory and pcb circuit. Simple 12 volt battery charger circuit diagram designed by using few easily available components and this circuit is suitable for different types of batteries needs 12 volt. A battery charger is a device used to put energy into a secondary cell or rechargeable battery by forcing an electric current through it.

Let us dive into the project by taking a look at the circuit diagram or rather the connection diagram of this diy solar battery charger for 18650. Now a days so many rechargeable batteries are coming like 1 2 v 3 7 v 4v 6v 9v 12v 24v etc you can check all types of battery charger circuit diagram at this page. My final year thesis is portable smart solar battery charger for li ion battery 3 7v 1200mah from solar panel 5v 1000mah which have leds indicator overvoltage and overcurrent protection etc. This circuit can be used to charge all type of 12v rechargeable batteries including car batteries.

The term 18650 cell is due to the cell dimension it is cylindrical in shape with 18mm diameter and height of 65mm. Below is the circuit diagram for our power bank. You can use mobile charger or computer usb as input. The second simple design explains a straightforward yet precise automatic li ion battery charger circuit using the ubiquitous ic 555.

The circuit is nothing but a 12v dc power supply with an ammeter for monitoring the charging current. All the components which i will list out in the next section are very easy to acquire and are easily available in local electronics stores you can get them online as well. As we can see its fairly easy to make a power bank with li ion battery tp4056 module and a boost converter. This is a very simple li ion battery charger circuit diagram with auto cut off current control features.