Original DeWalt DCB204 Battery (OEM Option)
Genuine DeWalt 4.0Ah 20V MAX lithium-ion battery for everyday use.
Buy Original DeWalt DCB204 Battery
Compatible Replacement Batteries for DeWalt DCB204
Genuine batteries, chargers and kits for this platform
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Before you buy: check that the size, fitting/bore and maximum-rated speed marked on the accessory match what your tool’s manual specifies. We have not physically tested these products; listings are compiled from published specifications. These are affiliate links.
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Which batteries fit which tools — cross-brand, adapters & Ah, decoded.
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Ready to Replace Your DeWalt DCB204 Battery?
Related Guides
- Every DeWalt 20V MAX Battery Compared
- Every DeWalt 20V MAX Tool and Which Batteries Fit
- DeWalt 20V MAX Charger Compatibility Guide
- DeWalt POWERSTACK vs Standard Battery
- How Long Do Power Tool Batteries Last?
Frequently Asked Questions
Is the DCB204 enough battery for professional use?
The DCB204 (4.0Ah) is adequate for light to moderate professional use — drilling, fastening, and intermittent cutting. For sustained heavy-duty work like continuous sawing or grinding, the DCB205 (5.0Ah) or DCB206 (6.0Ah) are better choices as they deliver longer runtime before recharging.
Can I mix DCB204 batteries from different brands in the same tool?
Only packs made for DEWALT 20V MAX fit DEWALT 20V MAX tools; other brands’ packs need an adapter, which we do not recommend. Third-party DEWALT-fit packs physically fit, but DEWALT does not approve them.
How many DCB204 batteries do I need?
Two packs and one charger let you use one while the other charges. On DEWALT’s DCB115 charger the DCB204 charges in 60 minutes, against 75 minutes for the 5.0Ah DCB205 (DEWALT charge-time table).
What does the XR label mean on DeWalt batteries?
DEWALT uses XR as a range name for its 18V packs (sold as 20V MAX in North America). We have not found a DEWALT statement defining XR or comparing cell grades, so we make no claim about the cells.
Video Guide
Key Specifications
| Specification | Details |
|---|---|
| Nominal Voltage | 18V (20V MAX) |
| Capacity | 4.0 Ah |
| Watt-Hours | 72 Wh |
| Chemistry | Lithium-Ion |
| Weight | Not stated in our DEWALT sources (the UK 4.0Ah DCB182 is 0.61 kg) |
| Battery Indicator LED | Yes |
| Compatible Platform | DeWalt 20V MAX Series |
Signs Your DCB204 Battery Needs Replacing
Lithium-ion batteries degrade naturally over time. Here are the key signs that your DeWalt DCB204 battery needs replacing:
- Rapid discharge: The battery drains noticeably faster than when it was new, even after a full charge. If a battery that once lasted an hour now dies in 20 minutes, capacity has degraded significantly.
- Charges but dies quickly under load: The battery appears to charge fully but shuts off within minutes when powering demanding tools. This indicates internal cell failure where the battery can no longer deliver sufficient current.
- Excessive heat during use or charging: While some warmth is normal, a battery that becomes uncomfortably hot during operation or on the charger has damaged cells. Excessive heat is both a symptom and a cause of further degradation.
- Physical swelling or damage: Any visible bulging, cracking, or deformation of the battery casing means the cells inside have failed. Stop using a swollen battery immediately and dispose of it safely at a recycling point.
- Charger error indicators: If your DeWalt charger flashes error lights or refuses to charge the battery entirely, it has detected a fault. Most modern chargers include diagnostic features that identify damaged batteries.
- Age: lithium-ion packs lose capacity with age and use. If an older pack’s runtime has clearly dropped, replacement is worthwhile.
OEM vs Third-Party Replacement Batteries
When replacing your DeWalt DCB204, you have two main options: genuine DeWalt batteries or third-party compatible alternatives. Both will physically fit and power your tools, but there are meaningful differences worth considering.
| Factor | Genuine DeWalt | Third-Party Compatible |
|---|---|---|
| Typical Price | £50-90 | £25-50 |
| Cell Quality | DEWALT genuine pack | Varies by manufacturer |
| Warranty | DEWALT UK: 1 year; batteries are excluded from the 3-year registration extension (POWERSTACK excepted) | Varies by seller |
| Safety Certifications | Built and certified to DeWalt’s own standards, with UKCA/CE marking | Varies by seller. Markings such as UKCA or CE are the manufacturer’s own declaration, not independent proof of testing — check who the responsible manufacturer or importer is before buying |
| Expected Lifespan | Not published by DEWALT | Not published |
| Performance Consistency | Made for DEWALT 20V MAX tools | Compatible, slight variation possible |
Choose genuine DEWALT batteries if you use your tools professionally and depend on them for income: you get a pack DEWALT makes and supports, with a known warranty route.
Third-party batteries can suit homeowners and occasional users who want a lower cost; quality varies, so check the seller and warranty. You can often buy two third-party packs for the price of one genuine unit.
How to Get the Most from Your Replacement Battery
Follow these care tips to maximise the lifespan and performance of your new DeWalt DCB204 replacement battery:
- Charge fully before first use: DEWALT’s manuals say to charge lithium-ion packs fully before first use.
- Storage: DEWALT’s manuals recommend a cool, dry place at room temperature, out of the charger; for long storage, store the pack fully charged and never completely depleted.
- Avoid temperature extremes: DEWALT says not to store or use packs where the temperature may fall below 4 °C or reach 40 °C or more. Never leave batteries in a hot vehicle or in direct sunlight.
- Leaving it on the charger: DEWALT’s manuals say a fully charged pack may be used straight away or left in the charger.
- Use a DEWALT charger listed for the pack: DEWALT’s 20V MAX charger list includes the DCB112, DCB115 and DCB118; check the charger manual’s battery list.
How we compile this guide
We cross-reference compatibility details against manufacturer specifications where available, official tool manuals, and the physical standards that govern fitment (bore sizes, arbor diameters, voltage platforms, connector types). We prioritise primary sources over retailer listings, flag anything we can’t confirm, and re-verify the data on a regular cycle. Where we give a buying recommendation, we tell you the reasoning — not just the link. More on our method →
