40-Volt Lithium-Ion 4.0 Ah Battery

The RYOBI 40V 4.0 Ah Battery is the perfect addition to your RYOBI 40V collection. This 4.0 Ah battery gets 2X more runtime than the RYOBI 40V 2.0 Ah Compact Battery while delivering the same fade-free power and performance. All RYOBI 40-Volt batteries come with an on-board fuel gauge to display remaining runtime. This battery works with all RYOBI 40-Volt tools and chargers. Backed by a 3-year warranty, there’s never been a better time to consider cordless.