What if charger is smart? and if it fills battery by itself and keeps it full, but not too much. That is what Automatic Battery Charger with Trickle Charger Circuit does. It has part that checks battery power. If battery is low it sends power to fill. When it is full it gives little power […]
Battery Charger Circuits
Simple Automatic Battery Charger Circuit using One Transistor
This post shows very easy way to make Simple Automatic Battery Charger Circuit using One Transistor and with few parts. This circuit charges battery by itself like small machine. It uses only one transistor, one resistor and one LED. Good for charging 9V battery where LED shows when charging. But this is basic charger with […]
How to Find the Charging Current of a Battery
To charge battery safely we need right amount of electricity like current. It is the same like plant needs right water. Most people use multimeter to check this but not everyone has it. In this article for How to Find the Charging Current of a Battery is easy trick without tool: Circuit Working: Parts List: […]
Simple Li-ion Battery Capacity Tester Circuit
Imagine we have a phone battery but how long does it really last? This Simple Li-ion Battery Capacity Tester Circuit is like a battery health checker. It shows how much power our Li-ion battery like in phones or laptops can still hold. It helps us know if the battery is getting weak and needs change. […]
Simple Cell Phone Charger Circuit using 1.5V Battery
This Simple Cell Phone Charger Circuit using 1.5V Battery is one special charger we can take anywhere but there is no need to plug. We can charge phone anytime. It uses normal AA or AAA battery same like in TV remote. Inside, it have part which make weak battery power strong so phone can be […]
NiMH Battery Charger Circuit
This NiMH Battery Charger Circuit is like special water can for NiMH batteries which are the same batteries inside camera, toy and other devices. Normal charger maybe not be so good for these batteries but this NiMH charger circuit give just right power and make battery work good and last long time. Circuit Working: Parts […]