The PowerWalker LiFe Battery System is a modular and scalable lithium-ion battery pack, suitable for all our solar inverters. The energy storage system or ESS, is lightweight and compact, it charges at a high rate, and is designed to last between 6000-8000 charge cycles; perfect for long term projects. The lithium-ion technology guarantees safety and reliability. The back-up time works linearly, so you will get what you have! The ESS, together with our solar inverters will function as a centralized power solution: - store solar power into the batteries, - save money by using the stored energy for self-consumption (night-time), and - use it as a power back-up when the powergrid fails. Works with all PowerWalker solar solutions – One ESS for all!