Based on current battery technology and price, there is no doubt that the LiFePO4 battery is the most suitable for use as an off-grid battery. First of all, there is the issue of cost, which is also an option that most people will pay attention to. In the case of long-term off-grid, the default battery is generally used for a long time, that is, the working time of the battery will basically be more than 10 years. The LiFePO4 battery cycle life is very long, 10 years is not a big problem, you can always enjoy the benefits of LiFePO4 batteries during the life, although the upfront cost is higher. But there is no doubt that you can recoup the cost in a few years and continue to have fun for the rest of the time.