[10-Year Lifespan] Cooperating with EVE, a premium brand manufacturer of LiFePO4 batteries, their A+ grade batteries make our 100Ah LiFePO4 batteries last up to 10 years, 3 times longer than ordinary lead-acid batteries, up to 20,000 cycles, and support 4S4P - use capacity up to 20.48kWh.[Comes with Low Temperature Protection] HumsiENK 12V 100Ah LiFePO4 battery can work in a constant temperature range (-4â to 158â / -20â to 70â). It will automatically shut down at low temperatures, no need to be afraid of the weather.[Secure and Reliable] HumsiENK LiFePO4 battery has a built-in advanced BMS (battery management system) that provides multiple protection functions, including overcharge protection, over-discharge protection, overcurrent protection, and short circuit protection. This ensures the secure operation of the battery while extending its service life.[Large Capacity Battery Pack] This set of 100Ah LiFePO4 batteries can be connected in series or parallel, with a voltage of 24V and a capacity of 2560Wh, providing long-lasting battery life without the need to frequently charge your RV or golf cart.[Fast Charging and Efficient Output] The HumsiENK LiFePO4 battery is equipped with advanced charging technology, which can charge quickly and save time. At the same time, it provides efficient power output, which can store power for your home or work equipment for a long time.[Lightweight and Easy to Install] HumsiENK lithium batteries can adapt to various styles of RV layouts, and the installation process is simple and plug-and-play. The light weight makes it easy for you to move and use.[5-Year Guarantee] If you have any product-related issues or questions, please find us via email and directly reach our support team via email, we will help you solve it within 24 hours.ABS