Our cutting-edge MaxLithium technology gives you the same great features of any lithium-ion battery - with 80% more runtime than an 18V model! Forget about self-discharge as you will experience full power until the end of the battery charge. Don't worry about leaving this battery on the charger because there is no memory effect. This 24V MaxLithium" battery is our most powerful and longest-lasting battery ever offered! 'Designed for: WG167 - WG923 Also compatible with: WG165 - WG265 - WG565