Storing LIPO C Supplement Properly for Best Results LiPo Guard Large Case (190x85x70mm) for Charging and Storage for R C or RC Team Integy KOS32310XS XS Lipo Charging Case Storage Case 180x80xH100mm Koswork R C Model Expandable Heated Lipo Sleeve USB C COLCASE Upgraded Fireproof Explosionproof Lipo Safe Bag for Lipo Battery Storage and Charging , Large Space Highly Sturdy Double Most Lipo battery chargers have a Storage mode. If you dont plan on using them in the next few days it is always best to bring your batteries down or up to storage voltage (approx 3.8v per cell).