Quick tutorial video how to start with the LiFePO4 (LYP) cells. Learn and see the 13 steps. See how to make the first check-up and the initial charging. About Winston cells: Large capacity LiFeYPO4 prismatic cells. Thundersky – Winston Battery famous yellow cells. More than 18 years on the market. Thousands of satisfied customers. Easy assembly using the large screw terminals. Performance 10000 cycles. Warranty 10 years. Life-span 30 years. Simple. Safe. Secure. About GWL: GWL/Power is the European distributor for Thundersky - Winston Battery cells. Quick delivery for the cells to all of Europe and also around the world. GWL/Power provides support and solutions for DC power systems. Large warehouse in the center of Europe. Fast shipping in 2 to 3 days. Links and References Winston cells: https://www.ev-power.eu/Winston-40Ah-200Ah/ Terminal connectors: https://www.ev-power.eu/Winston-terminals/ LiFePO4 Chargers: https://www.ev-power.eu/Chargers-6V-to-36V/