Oct 052011
Uses MAX712/MAX713 fast charge controllers. PCB Design too. The only difference between them is the battery-fully-charged sensing method. The MAX713 is designed for NiCd batteries, while the 712 is for NiMh batteries.
Fast, smart and universal NiCd/NiMh battery charger
This is a project by Roberto Barrios at his Ham Projects EB4EQA Site.
Application Note -
The MAX712 terminates fast charge by detecting zero voltage slope, while the MAX713 uses a negative voltage-slope detection scheme.
Fast-Charge Controllers – MAX712 and MAX713
Some Specs
- Charge 1 to 16 Series Cells
- Supply Battery’s Load While Charging (Linear Mode)
- Fast Charge from C/4 to 4C Rate
- C/16 Trickle-Charge Rate
- Automatically Switch from Fast to Trickle Charge