Please see our delivery page for more information on potential delays caused by Royal Mail strikes.

DeWalt XR 18V Battery 4.0Ah

By DeWalt Product code: 21058 Pack size: Each

£49.98 was £69.98 Exc. VAT £41.65

Product Details

Don’t get caught out by a flat battery in the middle of a job. If you’ve got a fully-charged replacement DeWalt XR 4.0Ah battery on hand, you’ll never have to worry about any downtime – a simple switch, and you’ll be straight back to work in no time.

This battery is compatible with all tools across the DeWalt 18V XR Li-ion range, offering extended runtime and optimised power to ensure all tasks are completed quickly. It has no memory effect, so the battery doesn't have to be flat before you recharge it. Keeping it stored between jobs? No problem – self-discharge is minimal too, so it retains maximum power for longer.

• Compatible with all tools in the DeWalt 18V XR Li-ion range

• Extended runtime and optimised power to complete jobs quicker

• Battery light indicator helps you plan and manage pack charging

• No memory effect – battery doesn’t need to be flat before recharging

• Minimal self-discharge – retains its power, even in storage

• Lightweight, compact design for easy use with your power tools

• Can be charged by any DeWalt XR charger

Technical Specification
Brand DeWalt
Manufacturer ID DCB182-XJ
Voltage 18
Battery Type Li-Ion
Safety Data Sheet click here
Type Battery
Amp Rating 4
Power Source / Cordless Cordless
Batteries Included 1 x 4.0Ah
Corded or Cordless Cordless
Delivery details

Please be aware that Royal Mail strikes on 30th September and 1st October may cause a slight delay in our usual delivery timescales. We’ll do everything we can to try to avoid any impacts to our service, and apologise in advance if you experience delays receiving your order.

We recommend placing orders as early as possible, to avoid delivery delays. Alternatively, please use our Click & Collect service or visit your local store to buy your items.

DELIVERY OPTIONS (UK mainland only)

Next Day Delivery – £5.00 or FREE for orders over £25

  • Order before 9pm Monday to Thursday for next business day delivery
  • Order Friday to Sunday before 5pm for Monday delivery
  • Orders placed after Sunday at 5pm will be delivered the following Tuesday
Pre-12pm Delivery – £10.00 to arrive before 12pm on the scheduled days above
Saturday Delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 6pm Friday)
Sunday delivery – £10.00 or £5.00 for orders over £25 & FREE for orders over £75 (order by 4pm Saturday)
Times may vary for items being delivered directly from the supplier. For more information, please visit our delivery information page below.
Items over 30kg can only be delivered from Monday to Friday. If ordered before 6pm, please allow up to two business days for delivery. Orders placed after 6pm Thursday will be delivered after the weekend.
More about Delivery
Click & Collect details

Collection Details

Our opening times are 7am-8pm Monday-Friday, 7am-6pm Saturday and 9-4pm Sunday. Please check your local store is open on the store locator page, before you visit.

Once you have placed your order online, we’ll have it ready for you at the store you have selected in as little as 5 minutes. We will hold your order for 14 days, after which we will automatically generate a refund to the payment type you used to place the order.

Don’t forget your mobile number – Make sure your mobile number is added so that we can text you when your order is ready to collect. Please wait for your text or email before coming to collect your items.

If an item is eligible for Next Business Day Collection in store, the order must be placed by 9pm Monday to Thursday for collection the next day. Orders placed after 9pm on Thursday, and up to 5pm on Sunday, will be available for collection on Monday. For larger items over 30kg, please allow two business days.

DeWalt XR 18V Battery 4.0Ah is rated 4.9 out of 5 by 68.
Rated 5 out of 5 by from More juice My smaller battery ran out of power quickly when I used a circular saw. This battery gives me much more usage
Date published: 2022-05-01
Rated 5 out of 5 by from Stays charged Works well and stays charge after a lot of work
Date published: 2022-04-22
Rated 5 out of 5 by from Just the job Good sized battery for high power applications
Date published: 2021-12-13
Rated 5 out of 5 by from Dewalt 4amp Original battery are always worth the money
Date published: 2021-10-23
Rated 5 out of 5 by from Battery life and compatibility Works perfectly. Compatible with drill and charger
Date published: 2021-09-10
Rated 5 out of 5 by from DeWalt XR batteries Good battery for longer/sustained use. All existing batteries I have purchased are 2.0Ah and are good but drain quite quickly when used with saw, drill’s & multi tool.
Date published: 2021-09-09
Rated 5 out of 5 by from Good battery, lasts a long time. Bought it for my orbital sander as my smaller batteries didn’t last very long. I didn’t want to get anything too large and heavy, that would make using the sander more difficult. This is just the right balance. It lasted a couple of hours of the sander on full blast.
Date published: 2021-08-23
Rated 5 out of 5 by from DeWalt XR 18V Battery 4.0Ah The battery does what it says on the tin, as the saying goes. My husband has used it for his xr drill driver and his xr brushless combi drill and it is great.
Date published: 2021-08-16
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