"Extend the run time for your compatible Solar Generator Power Station using the Champion Power Equipment 1638-Wh Lithium-Ion Power Station Expansion Battery. You can pair up to 10 expansion batteries per power station (not included) to add 16.3 kWh capabilityideal for supplying off-grid power while camping or enjoying the RV lifestyle without gas, engines, or harmful emissions. Extra batteries provide backup for a few essential items in your home or can be used to power your pellet grill or sound system while tailgating. Easy Connect DC Solar Charge Harness has 3 MC4 connectors, and an APP port to use your solar panel to charge your battery directly. MPPT solar controller maximizes the amount of power the battery harnesses from the sun. AC wall power or solar power delivers 440W of charging power; use both at the same time and get 880W of charging power. AC plus DC charges the battery in just 2.3 hours with 80% power in a little more than half that time. The advanced lithium-ion battery technology frees you from fuel dependency, providing reliable, fade-free power with low-battery protection. 1638-Wh lithium-ion Power Station expansion battery includes AC charge cable, AC/DC charging module, battery connection cable, and Easy Connect DC Solar Charge Harness. Compatible with Champion power station models 100593 and 100594. Mfrs. 3-year or 1000-cycle limited warranty. Dimensions: 13.4""L x 10.2""W x 6.7H. Weight: 24.9 lb.Manufacturer model #: 201107. Chain up to 10 expansion batteries per power station Easy Connect DC Solar Charge Harness 3 MC4 connectors and an APP port MPPT solar controller Charge using AC wall power and solar power Up to 880W of charging power Reliable, fade-free power with low-battery protection"