The EGO 56-Volt Lithium-ion Rapid Charger monitors and controls each cell in the battery pack to control temperature for maximum battery life. The active cooling fan system and advanced communication with the battery supports rapid charging without overheating. The rapid recharge capability ensures limited downtime with any battery in the EGO platform. All EGO out door power equipment comes with a 5-year limited warranty and 3-year limited warranty on EGO POWER+ System battery packs and chargers. Please contact EGO Customer service Toll Free at 1-855-EGO-5656 any time you have questions or warranty claims.