The Best Solar Kit in The Industry UPS Solar has always sought to use the very best materials and process practices. Get your FREE Battery quote here System Size*5kWh Fox Storage System with 2 x 2.5kWh Lithium Ion Batteries7.5kWh Fox Storage System with 3 x 2.5kWh Lithium Ion Batteries10kWh Fox Storage System with 4 x 2.5kWh Lithium Ion Batteries12.5kWh Fox Storage System with 5 x 2.5kWh Lithium Ion Batteries15kWh Fox Storage System with 6 x 2.5kWh Lithium Ion BatteriesName* First name Last Name Telephone Number*E-Mail Address* CAPTCHA This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.NameThis field is for validation purposes and should be left unchanged. High Voltage Easy Installation High Efficiency Expandable System 90% DoD HV Fox 2500 Datasheets 2.5kWh Capacity Scalable to 17.5kWh 98% Charge/Discharge Efficiency 90% Depth of Discharge Wide Temperature Tolerance Easy Installation CAN/RS485 Communication High Voltage