DerBlue 2pcs Fireproof Explosionproof Lipo Battery Safe Bag Lipo Battery Guard Safe Bag185x75x60mm Dimensions (LxWxD): 185 x 75 x 60mm Weight: 75g.Color: Silver.Material: Fire-proof Material Use: for safer charging and storage of batteries The safest way to charge and store your lithium battery Please note: only purchase this from DerBlue, we cann't sure other seller' quality This lipo-guard is a fireproof bag, designed to stop and contain the fire caused by incorrectly or poorly functioning lipo , especially during charging,protect your family and home from the hazard of lipo batterie charging. Use: for safer charging and storage of batteries It is large enough to place multiple batteries at once The safest way to charge and store your lithium battery This flame retardant bag is a convenient way of safeguarding your LiPo batteries during charging, transit, and storage. The fireproof bag is made of fireproof cloth. When the battery is accidentally burned or exploded, it can effectively isolate the battery from the air and achieve the purpose of fire extinguishing. It is large enough to place multiple batteries at once Hold 4 batteries (3S 2200 mah) Hold 3 DJI Mavic Pro batteries Hold 2 MJX Bugs 2 batteries Hold 1 DJI Phantom 2 batterie Dimensions (LxWxD): 185 x 75 x 60mm Weight: 75g. Color: Silver. This bag is just the right size and shape for holding four batteries (2200 mah ) while they are charging on multi-charger. NOTE:Ensure flap is sealed while charging Package includes: 2 x Lipo safe bag