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LENOVO ThinkPad T420si Series Laptop Battery, ThinkPad T420si Series batteries

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	Product ID: 1003763 Battery Chemical: Li-ion Battery Voltage: 11.1V Battery Capacity: 5200mAh Battery Color: black Type: replacement (learn more) Warranty: 12 months

11.10 V, 3900 mAh batteries for LENOVO ThinkPad T420si Series

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	Product ID: 1002592 Battery Type: Li-ion Battery Voltage: 11.1V Battery Capacity: 3900mAh Battery Color: Black Type: original (learn more) Warranty: 12 months

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This LENOVO replacement battery pack is a 5200mAh, 11.1, rechargeable, removable, Li-ion battery designed to work with LENOVO ThinkPad T420si Series. The Hi-Quality battery meets or exceeds original manufacturer specifications for the LENOVO ThinkPad T420si Series Laptop Battery in quality, durability, and performance. Li-ion batteries do not suffer from the memory effect. They generally last between 300-500 charge/discharge cycles. All laptop batteries are tested for 100% quality control assurance. This battery for LENOVO ThinkPad T420si Series includes a one year warranty. We offer a 30 day money back guarantee and fast shipping on all of our products.