Review on 2-Pack ELEFLY WA3525 Replacement Battery For Worx 20V Tools - 3.0Ah Lithium Battery Compatible With WA3520, WA3575, WA3578 by Michael Murphy

One of the batteries was DOA, and wouldn't hold a charge, but the second one was great. Much longer life than OEM version, when you run blower on low. High speed only lasts seconds. For the yard work we do, this works out fine.Company was very quick to offer a complete refund for the dead battery, since they were out of stock on replacements (and revain automatically refunded the sales tax). Refund was in my revain account within 2 days of contacting the vendor, Elefly!