These chargers are constant current, constant voltage (CCCV) “Smart” chargers for 12V LiFePO or lead-acid batteries. “Smart” chargers stop charging once it reaches 14.6V.
For safety reasons, the charger times out and stops charging after 72 hours of continuous use. This is indicated by blinking red LEDs. To activate the charger again, simply disconnect and reconnect the power cable.
