Dewalt DW057K-2 DW059K-2 battery 18v power tool.
Rechargeable Dewalt DW057K-2, DW059K-2, battery replacement for 18v cordless impact wrench power tools plus fits all the chargers in the range.

• Dewalt DW057K-2 battery
• Dewalt DW059K-2 battery

no matter whether you are using this battery in the impact driver or the flash-light the best way is to use it a lot, they enjoy and relish the cycling of the cells, this is why trades people often get the best from them, if you use is not so frequent then charge before putting away and every six weeks if not being used.
As is with common with all rechargeable power tool batteries it will take several dispatched and use in the tool before a full capacity charge is reached, it will probably not even be noticeable but a important part of the conditioning process.

Replacement compatible battery that will fit all of the tools in the range including
DW057K-2 impact wrench
DW059K-2 impact wrench

This battery will fit all of the original chargers
Battery Type: Ni-MH, can replace the older NI-CD versions of the battery
Voltage: 18v
Capacity: 1500mAh, 1.5ah
Colour: Black
If you have a big project coming up or use the tools a lot then perhaps you might be interested in a longer lasting 3ah version, this will be capable of doing twice as much work on a single charge, the link to this extended power pack will be in the alternatives.