About this product 【Give your tools new life】The upgraded battery not only expands the battery capacity, but also improves the battery life, which will make your power tools more powerful and work longer. 100% suitable for original charger. [Wide Compatibility] Suitable for A1718A18 HPB18 tree sawing machine instead of Black & Decker BD18VB [High Capacity] High-performance battery cells ensure that all batteries are efficient, reliable, safe and of high quality. There is no memory effect and it can be charged or discharged on demand without losing capacity. [More convenient to use] Upgraded 4500mAh large-capacity replacement battery with long-lasting performance, extended battery life, and longer runtime than other batteries.”