HPI Racing Plazma Pouch Lipo Safe Charging Bag. Charge your LiPo batteries with confidence using the HPI Plazma Pouch LiPo Safe Bag! The HPI Plazma Pouch is the perfect place to charge and store your Plazma LiPo batteries or any other brand of LiPo batteries. The Plazma Pouch is flameproof for protection from overcharged or damaged batteries. It is a highly recommended safety device for anyone using LiPo batteries. Use the rounded stick pack style for universal fit in most electric-powered kits and battery-powered accessories like the HPI Roto Start. The square-cornered style is great for racing kits like the Cyclone and the Vorza, which fits battery packs side-by-side.