Enhance the performance and longevity of your lithium cell pack with our 61mm PVC Heat Shrink Sleeve in Blue, available at Tronix365. One of the best ways to seal your battery is by using heat shrink. It can protect your battery from short circuits, seal your battery against the weather and add a professional look to your DIY battery. While PVC heat shrink offers excellent protection, it's important to note that it can become brittle over time and may crack at the edges or sharp corners. Trust Tronix365 to provide you with innovative electronics solutions and the highest quality components for all your technical needs.