How can a deeply discharged battery be regenerated?

To reactivate a deeply discharged battery of the PROFITEST PRIME, the following two methods have proven to be effective

1. method

• Connect the power supply unit to the measuring instrument
  
• Turn on the PROFITEST PRIME (red switch) and allow it to boot up
  
• Activate the fast charge mode with the rotary switch.
• After approximately five seconds, turn off the PROFITEST PRIME
  
• Repeat this process three times
  

2. method

• Connect the power supply to the meter
  
• Turn on the PROFITEST PRIME (red switch) and allow it to boot up
  
• Activate the voltage measurement with the rotary switch
  
• After approximately five seconds, turn off the PROFITEST PRIME
  
• Repeat this procedure three times