Persever 2Pack 4.0AH for Worx WA3520 20-Volt MAX Lithium Battery WA3578 WA3525 WA3575 Cordless

1.CE Certified, and Tested by Manufacturer to Match OEM Products. 2.Tested to Work with Original or OEM Charger. 3.Overload Protection, Long-lasting Performance and Durable. 4.All-Weather Performance. Delivers fade-free power in extreme jobsite conditions. 5.Good After Service. We provide a wonderful shopping experience, if you have any problems please contact us. We will solve your problem within 24 hours.