About this item *NEW MODEL* – Replaces Model 1622PS FEATURES: This 1800 Watt Pure Sine wave battery backup is compact; it’s designed to operate up to 15 amps & comes with indicators for power output, battery charge, & battery replace. COMPACT & DURABLE: The 1733 battery backup is housed in rugged aluminum & comes in a compact size; supports full pump capacity & can be easily installed; it offers a silent & clean operation WHAT YOU NEED: For functionality of the battery backup, connect a 12Volt deep cycle marine battery (purchased separately) with a capacity rating between 90 & 200 ampere hours; battery cables included BRAND PROMISE: We take pride in our rugged, built-to-last products & offer a 2-year factory warranty on our sump pump battery backup system; made & serviced in the USA