Switchless NiCd-NiMH Battery Charger
This circuit may be used to replace the single current limiting resistor often found in dirt cheap battery chargers. The alternative shown here will eventually ...
Grid Powered Battery Charger
This circuit lets you keep the appliances plugged into your inverter. It won`t make the wind blow or the clouds go away, but it will keep your batteries safely ...
Ni-MH Ni-Cd Adjustable Constant Current Charger
Ni-Cd Ni-MH Adjustable Constant Current Battery Charger Circuit This is a Adjustable Constant Current Ni-MH or Ni-Cd battery charger circuit. It can be used to ...
USB car charger circuit
This USB car charger circuit adapter from car cigar socket project is a DC DC power converter that safely converts the 12V car battery voltage into stable 5V. T...
Simple Ni-Cd Battery Charger
This Ni-Cd battery charger is a circuit based on the regulator IC lm317.This circuit is very simple and uses minimum components. By varying value of resistor R1...
Simple Battery State Indicator
Many a time the outdoor audio or video recording becomes imperfect due to a ˜dying battery. If the battery voltage is less than 9V for a 12V recorder, the outp...
NiCAD Battery Charger with Current and Voltage Limiting
The following diagram is the schematic diagram of Ni-CAD Battery Charger circuit which featured with current and voltage limiting to keep the battery lifetime. ...
Low Cost Universal Battery Charger Schematic
Here the simple and low cost NiCd and NiMH battery charger: Schematic diagram: Note: I is 1/10 of the batterys charging capacity. For example if battery has a r...
Lead-Acid Battery Charger
The following diagram is the circuit diagram of Lead-Acid battery charger. This circuit provides an initial voltage of 2. 5 V per cell at 25 ƒ to quickly charg...
Battery Charge Nominal Discharge Indicator Circuit
12V Battery Charge Nominal Discharge (Low) Indicator Circuit This circuit monitors car battery voltage. It provides an indication of nominal supply voltage as w...
Adjustable Regulated Battery Charger
This battery charger circuit is regulated and adjustable to make this circuit able to charge the mosto NiCAD battery. This circuit will work for single cell or ...
9V NiCd battery charger
Using this electronic circuit diagram can be designed a very simple charging circuit for NiCd batteries. This electronic charger allows simultaneous charge of f...
200mA/Hour & 12V NiCAD Battery Charger
The following diagram is the schematic diagram of 12V NiCAD battery charger with charging rate of 200mA/Hour. This NiCAD battery charger circuit charges the bat...
12 Volt Gel Cell Charger
12 VOLT GEL CELL CHARGER BY Recently, a fellow amateur waslooking for a gel cell charger which would first charge at afixed rate and then later switch to a tric...
LED 12 Volt Lead Acid Battery Meter
LED 12 Volt Lead Acid Battery Meter Circuit In the circuit below, a quad voltage comparator (LM339) is used as a simple bar graph meter to indicate the charge c...
Car and Motorcycle Battery Tester
Car and Motorcycle Battery Tester Circuit Going camping nowadays involves taking lots of electronic equipment whether for day to day running or for fun and ente...
External Battery Discharger
The UBA is limited to discharging up to 2. 5A per channel. This discharge rate is adequate for testing 99% of the batteries on the market. It is not sufficient ...
Battery Backups in Consumer Electronics
Most people don`t know it, but there are usually over a dozen, battery backup systems in your home already. The average American around 18 battery backed up dev...
Solar charging a Nokia N95
One of the coolest parts of working on the Yahoo Purple Pedals project was figuring out how we could get the bikes as far off the grid as possible. Once we deci...
Solar Charger Build
Whatever past project these were used in obviously required three cells to be wired in parallel with a rather large (4700 uF) capacitor on a perf board. There w...