Battery Charger Circuits

Battery Monitor Circuit

Here is a battery monitor circuit which can be used to monitor the voltage of 12V lead acid batteries such as car batteries. The circuit is built around the LM3914 IC...

USB Car Charger

This is a project of a mini USB car charger circuit. The circuit can charge USB devices with car battery...

Automatic NiMH Battery Charger Circuit

Circuit of a full automatic NiMH battery charger using positive integrated voltage regulator IC 7805 which is porviding a constant current to charge the batteries...

Multiple NiCd & NiMH Battery Charger Circuit

A very interesting and useful circuit of a multiple nicd & nimh battery charger circuit which can charge batteries of many electronic devices for example radio, mp3 players, cellular phones...

USB Charger

This is a portable battery powered USB charger circuit. This circuit is able to charge your PDAs, Ipods, Mp3 players and any device that plug in to a computer USB to charge...

NiCd Battery Charger Circuit

This is a NiCd battery charger circuit. This circuit can charge 12V nicd battery pack. But you can also charge 6V and 9V battery packs...

Lead Acid Battery Charger Circuit

lead acid battery charger schematic using the famous IC LM 317. The circuit provides the correct voltage to charge the 12v sealed lead acid battery or 12v SLA battery...

Solar Battery Charger Circuit

Here is a  solar battery charger schematic which can charge 12 volt SLA batteries. This solar battery charger circuit has auto cut off function so it will automatically stop charging when the battery become full charge...

Li Ion Battery Charger Circuit

This is a circuit of a simple single cell li ion battery chager. This lithium ion battery charger circuit uses a LP2931 regulator IC...

Car Battery Charger

This is a schematic diagram of a full automatic 12v battery charger for charging the batteries of automobiles etc. This circuit has a maximum 2 amperes charging rate...

NiCd Battery Charger Schematic

The circuit is able to charge 2.4V, 4.8V, and 9.6V NiCd batteries. The LM317T IC showed in this NiCd battery charger schematic is use to regulate...

6V 4.5AH Battery Charger Circuit

Here is a 6V 4.5 AH battery charger circuit which is able to charge 6V 4.5 AH lead acid batteries. The schematic is very simple and using only few components...

6V Battery Backup Circuit

The project shown here is a 6V battery backup circuit. The circuit is easy to build and work as a mini UPS for 6V devices.

AlkalineBattery Charger

A good designed circuit of a Alkaline battery charger. The interesting thing of this circuit is that it uses a led that will show the charge of battery by blinking, when you connect a totally discharged battery the LED blink faster but when the battery charging process starts the LED blinking speed will dicrease slowly and completely stop when the battery will fully charged.

1.5 Volt DC to DC Converter

This is a circuit of dc to dc converter, this is a versatile circuit and can be use for many purposes in this diagram LT1073 is used for 1.5 volt to 5 volt conversion, voltage can be taken from any size of 1.5 volt battery for example AA or AAA.

Single Cell 1.5A Li-Ion Battery Charger

A miniature low dropout lithium-ion battery charger circuit using LTC1731.

AA Battery Solar Charger

A useful circuit of a solar charger, the circuit charges AA or AAA type battries. The best charging power achieved by placing the circuit in direct sun light. This circuit can be also use for powering any equipment like radio, disk man or palm etc which uses AA or AAA type batteries.

9V Battery Backup Circuit

This 9V battery backup circuit will work as a mini UPS. The circuit will instantly convert to battery power if the input voltage is absent...

DIY Solar Cell Phone Or USB Charger

Here is the schematic of a simple DIY solar cell phone or USB charger circuit. This solar USB battery charger circuit can be used to charge...

Simple Battery Monitor

Here is a project of a simple battery monitor circuit. The circuit will monitor the voltage of 12 and 9V batteries and indicate by activating an LED when the battery level will...

Automatic Battery Charging Timer

This is a project of a universal automatic battery charging timer circuit. The circuit is able to charge many types of batteries from 5 to 12 volt...

Battery Level Monitor Using TL071 IC

The figure below shows a very useful project of battery level monitor using TL071 IC. The circuit is simple and easy to build and using...

Low Battery Voltage Cutoff Or Disconnect

Here is a very useful project of low battery voltage cutoff or disconnect circuit. Rechargeable batteries deliver very good performance and life if we take care of...


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