Nitecore Li Ion Rechargeable 21700 Battery 5300mah 3.6v Utility Key This dash kit makes radio CPS529 This dash kit makes radio replacement simple and comes with a built in pocket that is located below the 2" radio to fill the extra space in the radio opening 20 200Nm Digital Torque Wrench Revolutionary and powerfully upgraded As a patent product developed by NITECORE the 21700 I series battery is a proprietary 21700 rechargeable Li ion battery featuring dual way output with positive and negative polarities at both ends and a high energy density The internal resistance is therefore greatly reduced to offering a direct energy conversion to power the device Safety Features Microporous barrier protects delicate internal components