The L14V Lithium Ion (Li-Ion) rechargeable battery is built for the Redcat Classroom Audio Systems. Redcat systems purchased after June 1, 2016, have a door on the back of the system that can be removed to house this new battery. Charging is accomplished by the use of the 24V/1.75A power supply that accompanies all Redcat systems. Battery life is 12 hours on a single charge. This battery pack carries a 1-year warranty.