4Ah Replacement Compatible for Dewalt 20V MAX Battery with High Capacity Batteries Cordless Power Tools 20 Volt DCB201 DCB203 DCB204 DCB205 DCB206 DCD DCF DCG Series Cordless Drill Power Tools（Y）

What It Is

This is an aftermarket 20V MAX 4Ah lithium-ion battery, designed as a replacement or spare for DeWalt cordless power tools, including drills, saws, and other outdoor equipment like string trimmers and blowers.

Fitment & Compatibility

• Voltage & Chemistry: Works with all DeWalt 20V MAX (not 18V NiCd) tools and chargers. It is not compatible with DeWalt 12V, 60V FlexVolt, or 40V XR systems.
• Model Numbers: Listed as compatible with DCB201, DCB203, DCB204, DCB205, DCB206 batteries, and DCD/DCF/DCG series tools. Always verify your tool’s voltage input (20V MAX) before buying.
• Physical Check: This is an aftermarket (non-OEM) battery. It may be slightly larger or have a different fit than genuine DeWalt batteries. If your battery slot is tight (e.g., on some compact drills or blowers), test fitment or measure the battery compartment depth (approx. 5.5” x 3” x 2.5”).
• Charger: Works with any DeWalt 20V MAX charger (DCB115, DCB107, etc.), but charging time may vary.

Key Things to Know

• Capacity vs. OEM: 4Ah is a middle-ground capacity. It offers longer runtime than a 2Ah battery but is heavier and bulkier. Expect roughly 40-60% more runtime than a standard 2Ah pack.
• Build Quality: Aftermarket batteries often use less robust cells and plastic. Some users report shorter lifespan, slower charging, or overheating under heavy load (e.g., continuous mowing or drilling). Check recent reviews for failure rates.
• No Fuel Gauge: This model lacks a built-in LED charge indicator (found on genuine DeWalt DCB204). You must check charge via tool power or charger.
• Warranty: Aftermarket batteries typically carry only a 30-90 day warranty vs. DeWalt’s 3-year OEM warranty. Factor this into your purchase.

Should You Buy It

Buy this if you need a spare battery for light-to-moderate use (driving screws, trimming, occasional drilling) and want to save money over OEM. Skip it if you rely on your tool for daily heavy work, need a fuel gauge, or want long-term reliability—invest in a genuine DeWalt DCB204 instead.