YKS Lipo Battery Guard Safe Sleeve/Bag for Charge & Storage (Sliver, 7" x 9") RC Lipo Battery Safety Fireproof Guard Charge & Storage Bag. The safest way to charge and store your batteries. This Guard Bag is made from Fiber. Very safe, fireproof and environment-friendly. Size: 180 x 230mm / 7 x 9in (W x L). Thickness: 6mm. Weight: 90g / 3.17oz.