Power-Sonic PS-640 6V/4.5AH Sealed Lead Acid Battery w/ F1 Terminal (also works with SL Weber Upstart) Looking for reliable performance from your SL Weber Upstart UPS Backup? Our SL Weber Upstart battery will provide you the performance and dependability that you demand for your UPS Backup. With an efficient rating of 6V Volt and 4.5 , you never have to worry about being too far from an ac outlet. Our line of SL Weber Upstart batteries are precision-engineered and rigorously tested for voltage, capacity, compatibility and safety to exceed original equipment manufacturer specifications. With an industry leading warranty and customer service, you can’t go wrong. ... More Info
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