Battery handling, charging and discharging all have the potential for serious injury to persons and damage to property. Lithium batteries should NOT be left unattended while being charged as THEY CAN CATCH ON FIRE. Proper precautions should be taken before charging Lithium batteries such as having a fire extinguisher ready and placing the batteries in a fire safe container. RADIO CONTROLED HELICOPTERS AND ALL PRODUCTS RELATED TO THEM ARE NOT TOYS AND SHOULD BE HANDLED WITH GREAT CARE. When purchasing and using these products, the user agrees to accept responsibility for all such risks, and not holding the battery manufacturer or retailers/distributor responsibility for injury and/or crash damage or loss of kits, or accessories, parts and materials that occurs during the use of any radio-controlled model.