• 113-7500: Clear indication from all direction.
• 113-7501: LED indication: Clear indication from all direction.

• This is 12 V automobile power supply.
• Avoid the loss of memory during the battery replacement.
• Suitable for various cars. Built-in circuit protection.
• Power diagnosis: Low power warning when the power is low.
• Mistake proofing: Prevent the wrong polarity been connected.
• Easy operation: Independent connecting wire, prevent short-circuit.
• Safe protection: Fuse within, which will protect computer from short-circuit.

• Method I.):---
  Turn off the engine and connect the cigarette lighter plug into the cigarette
  lighter socket. Connect cigarette lighter plug with the power supply.
  Connect the power supply with backup power.
  Turn on the vehicle to the "ACC" position.
  Make sure two green color indicators light up.
  If red color indicator lights up, it means backup power has low battery power,
  please replace the battery of the backup power.
  Close the door and make sure all lights on the car have switched off.
  You can now replace the car battery.

• Method II.):---
  Stop the engine and take off the key.
  Connect the power supply with the OBDII connect.
  If green color indicator lights up, processing step4.
  If green color indicator doesn't light up, it means bad connection or the
  power supply cannot locate the power circuits; please disconnect the
  power supply and try again.
  Connect the power supply with backup power.
  Make sure two green color indicators light up.
  If red color indicator lights up, it means backup power has low
  battery, please replace the battery of the backup power.
  Close the door and make sure all lights on the car have
  switched off. You can now replace the car battery.