HULKMAN Sigma 1 Amp Automatic Car Battery Charger & Maintainer for $37 April 13, 2022 at 07:00PM

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Expires April 14, 2122 23:59 PST
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Just plug the power cord into the wall, and you're ready to go. This battery charger/maintainer handles all of the details for you. It's got a durable case with internal cooling fan. You get LEDs for the current charging stage and status, as well as temperature during charging. It's innovative, built-in microprocessor technology constantly monitors battery voltages, assuring that the correct amount of power is flowing to your battery.

  • Universal adaptive charging. Five tailored charging modes charge 99.9% of lead-acid batteries
  • Impressive LED screen display. Well-designed 2.7-inch user interface screen
  • AI harge ptimizer. AI Smart Maintainer automatically maintains the battery level without user intervention
  • 360° bad battery diagnosis & repair. Automatically detects battery sulfation & acid stratification & recovers the battery and its power
  • 5 smart system protections. Ensures security & reverse-polarity protection, stabilizing charging performance & prolonging battery life



  • Color: Black
  • Dimensions: 2.4"H x 1.7"L x 3.9" W
  • Screen: 2.7" LED screen (w/ 13 icons)
  • Input Voltage Range: (100VAC-240VAC)
  • Input Frequency: 50-60Hz
  • Charge Modes: 6V / 6V AGM / 12V / 12V AGM / 12V Lithium
  • 12V Super Repair Mode: Yes
  • Output Current: 1A
  • Operating Temperature: -20℃ to 40℃
  • Safety Protections: high-temp protection, short-circuit protection, over-current protection, over-voltage protection, and reverse-polarity protection


  • HULKMAN Sigma 1 Charger
  • Battery Eyelets
  • Battery Clamps
  • User Manual

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