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40v 2.5 Ah Lithium Battery

Available by Feb. 3

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A powerful, fade-free, high quality 40v battery to power all of your Atlas™ 40v tools.

Due to popular demand this product is currently out of stock, but will be back in stock by Feb 3. Order now to reserve your unit.

Compare to
Ryobi OP4020A at $99.00. Save 39%

Expected to Ship Feb. 3

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Product Overview

The Atlas™ 40v battery platform performs better than gas - no dangerous fumes, no gas and oil mixing, no engine maintenance. The 40v battery delivers 2X the power and runtime. Designed for rapid charging, this battery has a built-in fuel gauge that displays remaining power.

  • Powers all Atlas™ 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.


Battery capacity
2.5 Ah
Battery type
Lithium Ion
Battery voltage (volts)
Charge time
1h 26 min (40v/2A charger), 1h 8 min (40v/5A charger)
Shipping Weight
1.71 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.