EtrenankUS models and electrical market
DeWalt DCB205 vs DCB204: capacity and compatibility
Compare the documented 5Ah DCB205 and 4Ah DCB204 batteries, verify their shared US platform, and distinguish capacity from measured runtime.
The short answer
DCB205 is DeWalt's 20V MAX 5Ah battery [1]. DCB204 is the 4Ah model documented as the included battery in DeWalt's DCS356M1 kit [2]. Both catalog records belong to the US 20V MAX system. The capacity difference does not create a different voltage platform, and it does not by itself guarantee a particular runtime on a tool.
Capacity is the clearest documented difference
| Model | Stated capacity | Catalog relationship |
|---|---|---|
| DCB204 | 4Ah | 20V MAX battery |
| DCB205 | 5Ah | 20V MAX battery |
Five divided by four is 1.25, so DCB205 has 25% more stated amp-hour capacity. That figure is an arithmetic comparison of labels, not an Etrenank bench test. We have not measured mass, temperature, output under load, cycle age, or work completed per charge. Do not rewrite the ratio as “25% more work” without a tool-specific test under defined conditions.
Check the tool and charger separately
Open the exact tool model and confirm a documented battery relationship. Then check the charger-to-battery relationship independently. Compatibility with one 20V MAX tool does not establish that every old or specialized charger supports both packs. Manufacturer manuals and the exact charger page remain the deciding evidence. An undocumented pair should stay unknown.
Confirm the package you intend to buy
This comparison concerns single battery models, not two-packs, starter kits, or seller-created bundles. DeWalt's DCB205 page lists a single DCB205 in its included contents [1], while the DCB204 evidence here comes from a kit page [2]. Match the retailer's full SKU, quantity, and included charger before purchasing. Etrenank has no live price feed, so neither model is ranked as the better deal.
- Choose DCB204 only when the exact 4Ah model and package match your need.
- Choose DCB205 only when the exact 5Ah model and package match.
- Use the comparison tool for recorded fields, not inferred performance.