*36 MONTHS WARRANTY The gel energy is fully maintenance-free, the battery maintenance cost is too low and it offers an extra solution for marine vehicles. It provides an exact solution to the problem of acid drain from the battery. It can work even if it is partially broken, and also gives excellent results in vibrant working conditions. Even if it is not immediately charged, it can be completely recovered through the deep cycle. It has low internal resistance. It provides energy storage for the later use of alternative energy sources (sun, wind, etc.).