Start with the model numbers on your tool, battery and charger: DeWalt battery compatibility depends on the specific product family, so a familiar voltage label alone is not enough. DeWalt says FLEXVOLT batteries work with its 20V MAX tools; the DCB612 12Ah FLEXVOLT pack is listed for 20V MAX, 60V MAX and 120V MAX tools, and all 20V MAX chargers. For charging, the DCB1104 and DCB1404 support 12V MAX, 20V MAX and FLEXVOLT packs, while the DCB118 supports 20V MAX and FLEXVOLT. Check the exact model documentation before buying or connecting a pack.
How to check whether a DeWalt battery fits your tool
Use the battery and tool model numbers—not just the color, shape or a voltage marking—to confirm a match. DeWalt’s FLEXVOLT system page says FLEXVOLT batteries are compatible with DeWalt 20V MAX power tools. That is useful platform-level guidance, but it should not be treated as proof that every battery works in every DeWalt tool or that every charger accepts every pack. The specific product page and manual are the better check for a particular combination.
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- Find the tool’s battery-family marking and model. Record the model printed on the tool or in its documentation, along with its stated battery family, such as 20V MAX or 60V MAX.
- Read the battery label and product page. Confirm the pack’s exact model and listed tool compatibility. For example, DeWalt lists the DCB612 12Ah pack for 20V MAX, 60V MAX and 120V MAX tools.
- Check the charger separately. A pack fitting a tool does not by itself establish charger compatibility. Find the charger model and compare its documented supported battery families and pack list.
- Use the model-specific manual when the labels leave a question. DeWalt’s DCB1104 instruction manual includes a compatibility table. Follow the complete table applicable to your charger rather than relying on a partial list or a general family name.
For the DCB1104, the manual’s 20V MAX/FLEXVOLT group includes DCB201, DCB203, DCB204, DCB205, DCB206, DCB208, DCB230, DCB240, DCB606, DCB609, DCB612 and DCB615, among other packs. This is not presented as the complete compatibility list; consult the manual for every applicable model and any restrictions.
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DeWalt’s voltage-label note also matters when comparing tools: “MAX” is the maximum initial voltage measured without a workload, and the nominal value is lower. A 20V MAX label and an 18V nominal description do not, by themselves, mean two product classes are incompatible. Compatibility still needs to be established for the specific tool, battery and charger.
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FLEXVOLT and 20V MAX: what the compatibility claim means
DeWalt’s FLEXVOLT battery-system overview explicitly states that FLEXVOLT batteries are compatible with DeWalt 20V MAX power tools. For the DCB612, DeWalt’s product page names 20V MAX, 60V MAX and 120V MAX tools, and says the pack works with all 20V MAX chargers.
Those are specific manufacturer statements, not a blanket rule for every FLEXVOLT pack, tool and charger combination. Do not infer that a 20V MAX charger supports all batteries across a different family simply because one pack is documented as compatible. Compare the exact charger model’s own supported-pack information, and check the battery’s product page and tool manual if the combination is not stated clearly.
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Also distinguish tool compatibility from charger compatibility. They are separate questions: a battery may be specified for use in a tool family, while the charger must still be explicitly listed for that pack or family. The safest buying decision is made only after checking both sides of the connection.
What runtime claims do—and do not—tell you
DeWalt describes the DCB612 as a 12Ah battery and says that, when used with 20V MAX tools, it provides “up to 6x the runtime” compared with its DCB201 1.5Ah pack. This is DeWalt’s product-page claim, accessed in October 2026, with that named comparator and tool family. It is not an independent test result or a promise that the pack will last six times as long in every tool, material or job.
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The cited product information does not give a universal runtime in hours, nor does it supply controlled runtime measurements across particular tool and workload combinations. A reader therefore cannot responsibly turn the “up to 6x” statement into a fixed workday estimate. If you need to plan how many packs a job requires, use evidence for the exact tool and workload rather than applying this comparison as a guaranteed multiplier.
Capacity labels help identify the pack and provide a buying distinction, but the cited official sources do not translate the DCB612’s 12Ah rating into a number of hours for a given task. Treat capacity and runtime as related buying considerations, not as interchangeable promises of a known job duration. Compare the manufacturer’s stated capacity and any runtime claim together with its stated conditions and comparator.
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Compare the documented battery and charger options
| Option | What DeWalt lists | Best fit based on documented features | Important qualification |
|---|---|---|---|
| FLEXVOLT DCB612 12Ah battery | 20V MAX, 60V MAX and 120V MAX tool compatibility; all 20V MAX chargers | More capacity for a tool combination DeWalt lists as compatible | “Up to 6x the runtime” is DeWalt’s comparison in 20V MAX tools against the DCB201 1.5Ah pack; it is not a universal runtime figure. |
| DCB1104 charger | 4A; 12V MAX, 20V MAX and FLEXVOLT batteries | A single charger when the listed family coverage and compactness matter | DeWalt says it is 15% smaller than its DCB115 4A charger; the cited page does not provide a size measurement or charger time for every pack. |
| DCB118 fast charger | 8A; 20V MAX and FLEXVOLT packs; internal fan | A higher-rate single-port charging option for a supported pack | DeWalt qualifies the rated output as a maximum for packs designed to charge at that rate. |
| DCB1404 multiport charger | 4A; four ports; 12V MAX, 20V MAX and FLEXVOLT batteries | Charging several compatible packs in one charger | Published example times are “as little as” 32 minutes for four 2Ah 20V MAX packs and 67 minutes for four 4Ah packs. |
The models and specifications above come from DeWalt’s official product information: DCB1104, DCB118 and DCB1404, alongside the DCB612 page linked above. Product-page details were accessed October 8, 2026. Specifications and product availability can change; confirm the current listing and manual for the exact model before purchase.
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Choose the DCB1104 when compactness and family coverage are priorities
The DCB1104 is a 4A charger that DeWalt lists for 12V MAX, 20V MAX and FLEXVOLT batteries. DeWalt describes it as 15% smaller than the DCB115, another 4A charger. That comparison may be useful if storage space or carrying a charger matters, but the cited product information does not establish a charging-time advantage over the DCB115 or specify that every pack charges at 4A throughout a cycle. Use the manual’s compatibility table to verify a specific pack.
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Choose the DCB118 when its supported packs and higher stated rate suit your setup
The DCB118 is an 8A fast charger listed for 20V MAX and FLEXVOLT batteries. Its internal fan is intended to help limit hot- or cold-battery delays. This thermal feature is relevant in situations where battery temperature can affect charging, but it does not mean every delay disappears or that every pack can accept 8A. DeWalt says the rated output is a maximum for packs designed to charge at that rate, so do not interpret the number as a guaranteed rate for every supported battery.
Choose the DCB1404 when several packs need charging
The DCB1404 provides four ports and is listed for 12V MAX, 20V MAX and FLEXVOLT batteries. DeWalt gives example times of as little as 32 minutes for four 2Ah 20V MAX packs and 67 minutes for four 4Ah 20V MAX packs. Those figures apply to the stated four-pack examples and are qualified as minimum (“as little as”) times; they should not be generalized to different capacities, battery families or conditions. A multiport unit is a workflow choice for keeping several packs in rotation, not evidence that every individual pack will charge in one of those example times.
A practical decision sequence before you buy
- Write down the tool model and battery family. If you are replacing a pack, capture the existing battery model too; if buying a charger, note every pack you expect to charge.
- Eliminate unsupported combinations first. Match the battery’s stated tool compatibility to the tool, then separately match the charger to the battery. If a product page lists only a family, use the model manual for the exact pack-level check.
- Decide whether your constraint is runtime or charging logistics. If a compatible pack with greater stated capacity is the priority, compare options such as the DCB612 while keeping the manufacturer’s conditional runtime claim in context. If the issue is downtime across a set of packs, compare single-port and four-port workflows.
- Choose the charger around the supported pack and use case. The DCB1104 offers 4A and broad listed family support; the DCB118 has an 8A maximum rated output for packs designed for that rate and an internal fan; the DCB1404 has four ports. Those differences matter only after compatibility is confirmed.
- Check the current official listing and instructions before ordering. Product specifications can change, and the cited material does not establish today’s price or retailer stock. Confirm that the specific battery, charger and tool appear in current documentation.
This sequence prevents a common buying mistake: selecting a battery based on a larger capacity number, or a charger based on an amp rating, before checking whether the precise models are documented as compatible.
Common compatibility and runtime mistakes
- Assuming voltage text answers every compatibility question. MAX and nominal voltage labels describe different measurement conventions; check the model’s stated battery-family compatibility rather than treating the numbers alone as a compatibility test.
- Assuming one FLEXVOLT statement covers all chargers. DeWalt’s general statement concerns FLEXVOLT use with 20V MAX tools. Charger support must be checked separately; the DCB612’s stated compatibility with all 20V MAX chargers is specific to that pack.
- Reading a maximum charging output as a constant charging speed. DeWalt qualifies the DCB118’s 8A output as a maximum for batteries designed to charge at that rate. The rating is not a per-pack charge-time guarantee.
- Treating an example time as a universal estimate. The DCB1404’s “as little as” figures apply to four packs of the stated capacities and 20V MAX family, not every pack or charging setup.
- Turning a relative runtime statement into hours. The DCB612 page’s “up to 6x” comparison names the DCB201 1.5Ah pack and 20V MAX tools. It does not provide a fixed duration for a particular task.
- Using a partial compatibility list as a complete one. The DCB1104 manual lists multiple packs, including the models named above, and indicates other entries. Consult the full table for your charger and pack.
What to verify when product information conflicts
If a retailer listing, tool label and charger manual appear to disagree, pause rather than resolving the conflict by guesswork. Confirm the exact model suffix and battery-family wording on the physical product, then use the applicable official DeWalt manual and product page. A charger’s broad family designation and a battery’s tool compatibility do not necessarily answer the same question.
These product details reflect DeWalt’s cited US pages and manual: the product pages were accessed October 8, 2026, and the DCB1104 manual result indicates publication about 2024. The claims here do not establish current pricing, local availability outside the stated product information, or a universal runtime under field conditions. For a purchase made later or in another market, check the model’s current regional documentation rather than assuming specifications are unchanged.
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