Charging a Li-ion battery does not need big smart charger, but we can do it with one small 555 timer chip; also this 555 Pulse Generator Li-ion Battery Charger Circuit makes fast little pulses that charge the cell gentle and safe. Anyone can build this circuit with very few parts and with very low cost, […]
Battery Charger Circuits
Low Cost 1.2V AA Ni-MH Solar Battery Charger Circuit
This project shows about a Low Cost 1.2V AA Ni-MH Solar Battery Charger Circuit, as it works with small cheap solar panel and charges the battery safely in sunlight; also it uses only solar panel, diode, resistors and two transistors. Furthermore, these parts are few which are easy to find and circuit protects battery from […]
Solar Water Pump Circuit using Battery and MOSFET
In my earlier article I showed about solar water pump circuit using relay, that design works, but relay makes clicking sound and relay contacts can burn after long use. So now here is the new version and this project is Solar Water Pump Circuit using Battery and MOSFET instead of relay, as MOSFET has no […]
Solar Water Pump Circuit using Battery and Relay
This project is about Solar Water Pump Circuit using Battery and Relay; it uses one 18V 20W solar panel, two small 12V batteries, one relay and diodes. The circuit can run a 12V DC water pump and battery stores power from solar panel and relay controls when pump run; also it is a very simple […]
Simple Solar Battery Charger Circuit
Sun gives free energy every day and we can catch this energy and store in small batteries; also this Simple Solar Battery Charger Circuit does this job with very few parts. Just one solar panel, one diode and four NiMH cells, with no complex electronics and no hard wiring and is good for beginners, students […]
USB Powered Small Battery Charger Circuit
Here is a super easy USB powered battery charger circuit, which requires no microcontroller or fancy parts; hence, we can build it using just a simple resistor, a diode, and NiMH cells. Also, good for learning, good for small projects and is safe for small rechargeable cells and great for DIY makers. Circuit Working: Parts […]