This battery is equipped with advanced Lithium-Ion cells that deliver fade-free power throughout the entire discharge cycle. Unlike traditional Ni-Cd batteries, the Powercraft 9144 maintains consistent maximum voltage until the charge is fully depleted, ensuring that your power tools operate at peak performance from the start of the job to the finish. Additionally, it features a lightweight design that reduces user fatigue and has no "memory effect," allowing you to top up the charge at any time without damaging the battery life. Astalavr Work - 3.79.94.248