DieHard Manuals & User Guides

דיהאַרד is an iconic American brand renowned for its high-performance automotive batteries and power solutions. Originally established by Sears in 1967 and now owned by Advance Auto Parts, DieHard has built a legacy on reliability and durability, marketing products designed to operate in the toughest weather conditions. While best known for vehicle batteries, the brand's extensive catalog includes intelligent battery chargers, jump starters, inverter generators, portable power stations, alkaline batteries, work boots, and flashlights.

Modern DieHard products feature advanced technologies such as microprocessor-controlled charging for AGM and Gel batteries, as well as circular economy manufacturing processes for lead-acid batteries. Whether for automotive maintenance, emergency backup power, or job site utility, DieHard aims to provide 'Life' to your devices and vehicles. Support and warranty services for the brand are primarily handled through the Advance Auto Parts and Carquest network.

• What does a flashing green light mean on my DieHard battery charger?

  On most DieHard microprocessor-controlled chargers, a rapidly flashing green light indicates the battery is actively charging. A slowly flashing green light typically means the charger is in maintenance or float mode, keeping the battery fully charged.

• Can I use my DieHard charger on AGM or Gel batteries?

  Yes, most modern DieHard automatic chargers are designed for 12V lead-acid batteries, including Standard, AGM, and Gel types. Always check the specific mode or switch settings on your device.

• How do I obtain warranty service for a DieHard product?

  Since the acquisition by Advance Auto Parts, warranty claims for DieHard batteries and products are generally handled at Advance Auto Parts or Carquest locations. Legacy Sears products may have different support paths; verify your model's terms.

• My DieHard generator is overloaded; how do I reset it?

  If the overload indicator is red but the engine is running, disconnect all electrical loads, reduce the total power draw, and then press the reset breaker button on the control panel to restore output.

• How do I use the Engine Start feature on my charger?

  פאַרבינדן די קלamps properly to the battery, select the 'Engine Start' setting, and wait for any required countdown. Crank the engine for no more than 3-5 seconds. If it fails to start, allow the charger/battery to cool before trying again.