Harbor Freight Tools


80V 2.5 Ah 40V 5.0 Ah Lithium-Ion Battery

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A powerful, fade-free, high quality 40 and 80V and 40V battery to power all of your ATLAS™ tools.

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One battery, two voltage settings. Use this high performance lithium-ion battery with ATLAS™ 80V tools for ultimate power and performance. Install the battery in an ATLAS™ 40V tool and it intelligently switches voltage, giving up to 2X runtime over a 40V 2.5 Ah battery.

  • Powers ATLAS™ 80V and 40V tools
  • Fuel gauge displays state of charge
  • Rapid charge time
  • Industry leading quality Li-ion battery cells individually balanced and tested to meet the highest performance requirements
  • Thermal control extends life and runtime by minimizing heat
  • Impact resistance prevents failure from drops and vibration

Important Information

  • Battery only, requires ATLAS™ 40/80V Dual Voltage Battery Charger or Rapid Charger, sold separately. This item can only be shipped within the 48 contiguous states via Standard Ground Shipping.

Battery capacity
2.5 Ah (80V), 5.0 Ah (40V)
Battery type
Battery voltage (volts)
40 and 80
Charge time
45 Minutes
Shipping Weight
26.45 lb.
Note: Specifications are approximate and subject to change

We guarantee this product to be free from defects in materials and workmanship 90 days from the date of purchase. Limitations apply.