Power Sonic 12 Volt 5-Amp Rechargeable Battery

"Power Sonic" 12-Volt rechargeable battery pack with included cable to give extra power to any OS sound lectern. 8 hour life plugged in while not speaking; 4 hours while speaking. Recharges overnight. Efficiently powers any Oklahoma Sound lectern Battery life lasts four hours when speaking When plugged and not speaking the battery has an eight hour life Battery recharges overnight for your convenience; the lectern doesn't need to be turned on to charge The connecting cable is included so the battery can be used right away on your Oklahoma Sound lectern 10 Year Warranty 5 lbs