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Amazon.com: DR. BATTERY 916-3020 4UR18650F-1-QC192 Laptop Battery for Acer Aspire 5510 Series 5000 Series 3000 Series 3500 Series 1680 Series 1650 Series 1640 Series TravelMate 4000 Series [14.8V / 65Wh] : Electronics
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Amazon.com: DR. BATTERY 916-3020 4UR18650F-1-QC192 Laptop Battery for Acer Aspire 5510 Series 5000 Series 3000 Series 3500 Series 1680 Series 1650 Series 1640 Series TravelMate 4000 Series [14.8V / 65Wh] : Electronics