Simple 4v Battery Charger Circuit Diagram

So i use a 2a 12v transformer in the unregulated power supply.

Simple 4v battery charger circuit diagram. Working of ni cd battery charger circuit. In load or while in charge is 13v to 15vdc. Simple 12v battery charger with battery indicator. 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.

The battery is charged from a 230v 50hz ac mains supply. The relay does not work. You can use mobile charger or computer usb as input. Simple automatic cut off battery charger.

The circuit of a simple lm338 solar battery charger is shown below using the ic lm338. Car battery charger circuit working principle. Therefore r is set to 21ὠ to limit the current to 0 06a. You can use mobile charger or computer usb as input.

The open circuit voltage without battery appears as 1 5v which can be seen from the below. I use it for 12v 7ah battery and lower. The circuit diagram shows a simple set up using the ic lm 338 which has been configured in its standard regulated power supply mode. This is a simple car battery charger with indication.

The second simple design explains a straightforward yet precise automatic li ion battery charger circuit using the ubiquitous ic 555. A 12v battery is normally recharged at 14 2 v or 2 40v per cell. Suppose the voltage battery is 12 4v. Comes to look in the circuit.

Referring to the shown lipo battery charger circuit diagram the entire design could be seen configured around the ic lm317 which is basically a versatile voltage regulator chip and has all the protection features built in. This ac voltage is rectified and filtered to obtain an unregulated dc voltage used to charge the battery through a relay. Since the charging current for a 600mah battery will be 60ma. As the battery gets charged the terminal voltage begins increasing gradually until it reaches the set 14 2 v.

So the charging current is 2a. It can be used to charge batteries of many electronic devices for example radio mp3 players cellular phones and lots of other devices. It will not allow more than 1 5 amps across it s outputs and ensures a safe amp level for the battery. Once we attach the charger with the battery voltage drops from the actual supply 14 2 v level to the discharged level of the battery.

This is a simple 12v battery charger circuit with indicator circuit is a smart charger circuit. Multiple nicd nimh battery charger circuit a very interesting and useful design of a multiple nicd nimh battery charger circuit which can charge many different nicd and nimh batteries. This design additionally includes a twin indication system in the form of a battery. This is a very simple li ion battery charger circuit diagram with auto cut off current control features.