Hisen 5kW wall mounted energy storage lithium battery using grade A LiFePO4 cells to ensure the highest safety values and lifecycle, the BMS protects the battery from temperature, current, voltage, SoC and SoH anomalies. Offering a capacity range of 5-102kWh in 5kWh increments, it can be used to support reliable power for all types of equipment and systems. 1. How do you guarantee quality? Quality first. Always a pre-production sample before mass production. Always final Inspection before shipment. 2.What are your main products? We mainly manufacture Hybrid Solar Inverter, Residential Energy Storage System, and Commercial & Industrial Energy Storage System. 3. What can you buy from us? Solar Energy System, Solar Panels, Hybrid Inverter, LifePo4 Battery, Power Generator 4. What's the warranty period? For the sample, within 7-10 days, and the bulk production within 15-45 days. 5. What services can we provide? Accepted delivery terms: FOB, CFR, CIF EXW, FAS,CIP, FCA, DDP, DDU. Accepted payment type: T/T, L/C, WesternUnion 6. Are you a factory or a trading company? We are a factory with more than ten years of experience in the production of solar energy series products. You are welcome to visit our factory. 7. Can you print our company logo on the nameplate and packaging? Yes, we can do it according to your design. 8. Can you support OEM and field installation? Yes, as a professional solar system manufacturer, we can provide customers with OEM and on-site installation, full support and assistance services. 9. What certificates you have? Inverter: Battery: EN 62619 EN 63056 EN62932-2-2, UN38.3, MSDS.