Lithium battery can serve you for decades, to be certain, use Protection and Monitoring tools. Our self developed original Czech product, CPM, does just that. Make your Lithium battery last longer, simply, with fractional costs compared to similar solutions. See online at our e-shop: https://www.ev-power.eu/GWL-Modular/GWL-Cell-Performance-Monitor.html GWL CPM Module is an easy-to-use and effective three-level solution for the protection of the LiFePO4 and LTO batteries from excessive discharge or overcharge. The GWL CPM module helps your applications and makes the operation of LiFePO4/LTO battery packs easier, more reliable and safer. - Compatible with 4-16 LiFePO4/LTO cells - Expands the lifetime of the battery pack - Cell voltage indication range 1.7 – 4.09V - Low operating consumption 0.65 W - Able to control three bi-stable relays for charger, load and emergency backup - Built-in battery emergency disconnection and shutdown - Minimum and maximum voltage outputs and much more... Protect the battery pack and keep it running. Find out more at https://www.ev-power.eu/GWL-Modular/ You can, too, follow us on Facebook (https://facebook.com/gwlcompany/) or Twitter (https://twitter.com/GWLPower) for more frequent updates.