Noiposi 2 pcs Fireproof Explosionproof Silver Lipo Battery Safety Bag for Charge & Storage 185x75x60mm large size The battery charging in Lipo safe bag in order to reduce Hazardous events This flame retardant bag is a convenient way of safeguarding your LiPo batteries during charging, transit, and storage. Enough room for multiple batteries at once Easy to Open/Close & Very Secure Velcro Closure. Never leave charging battery unattended.(If you want to buy syma lipo battery,you can check this ASIN:B01GPUPPXK ) (If you want to buy hubsan lipo battery,you can check this ASIN:B01CN5LH1K)