LM317 Lead acid battery charger | 6V, 12V, 24V
See 4 LM317 Lead-acid battery charger circuits for 6V, 12V, and 24V battery, with automatic charging and full charged Indicator Easy to build. Read more
Lead Acid Battery Chargers
Converts power supply to automatic battery charger using SCR-CA723
This is how to modify old Lead-acid battery charger or convert power supply to battery charger in automatic. To protect over charging by CA723 and power SCR Read more
Battery full charge alarm circuit
The Battery full charge alarm circuit for a general battery charger. It is simplified circuit and cheap, use one transistor BC557 and display with 2 LED. Read more
Make cheap 6V battery charger circuit from a mobile charger
Modify cheap mobile phone charger inside is simple DC switching regulator circuit and can apply many ways, such as DC power supply Read more