I bought two Waitley BL-1850B 5.0 AH batteries for my Makita tools in late May 2020. They worked in Summer 2020 and 2021. Very light use. Less than 10 uses each. I charged them 100% and left them next to the charger in July 2021. I needed to blow some leaves in November 2021 and neither would charge. both showed faults. I will have to throw them away. The original Makita 4.0 AH battery is going strong. no deterioration. I am very disappointed.
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