Fast-Charge Controllers – MAX712 and MAX713

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

Fast-Charge Controllers - MAX712 and MAX713

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

MAX712, MAX713: Typical Operating Circuit

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

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