Newpowa 1000W Solar Kit(4pcs 250W) is a preferred choice for customers interested in installing their own off-grid solar panel system. This solar kit is ideal for various off-grid applications and pairs well in RVs, trailers, van/airstream conversions, and traffic systems. Kit with battery is optional. Kit Includes 4x 250W Monocrystalline High-efficiency Solar Panel For 12V System (NPA250S-15I) 1x Frigate 40A MPPT Solar Charge Controller With Bluetooth built-in (NPR-FG40-24M) 1x 20ft 10AWG cable W/(R/B) (NPC-20RB) 1x 3ft 12AWG cable w/ring terminals and fuse protection (NPRV-3) 1x 1ft flexible branch parallel connection set (m/ff)(f/mm) (NPC-46) 4x Universal flat mount z-bracket set (NPB-UZ) 2x LEOCH 12V 100A Deep Cycle AGM Battery(LPL12-100)(Optional) Warranty Solar: 2 year limited material and workmanship warranty 10 year 90% output warranty 25 year 80% output warranty Controller: 1-year limited material and workmanship warranty Shipping policy Newpowa offers free shipping for all domestic orders (48 states). Your order will be shipped within 3-5 business days from the date payment is cleared plus transit time, ships from Southern California. Please note that we are unable to ship to PO Box addresses for any size of solar panels. Upon shipment, a tracking number will be provided.