DeWalt battery charge times range from 30 minutes to over 3 hours, depending on the battery size, chemistry, and charger model you use
A small 1.3 Ah DeWalt lithium-ion battery charges in roughly 30 to 45 minutes on a fast charger. A standard 2.0 Ah battery takes 45 minutes to an hour. Larger batteries — 4.0 Ah, 5.0 Ah, and 6.0 Ah — take 1.5 to 3 hours on a standard charger, though fast chargers can cut that time in half. The exact time depends on three things: the amp-hour rating of the battery, whether you are using a standard or fast charger, and the charger's wattage.
DeWalt makes several charger types, and they charge at different speeds. A standard charger (usually 60 watts) is slower but gentler on the battery. A fast charger (typically 90 to 145 watts) cuts charge time significantly. The newest models, like the FlexVolt chargers, can charge some batteries in under an hour even at larger capacities. If you buy a battery and charger as a kit, the charger included is usually matched to that battery size, so you will get reasonable charge times out of the box.
Key Takeaways
- Small batteries (1.3 to 2.0 Ah) charge in 30 minutes to 1 hour on any charger; larger ones (5.0 to 6.0 Ah) take 1.5 to 3 hours on a standard charger.
- Fast chargers cut charge time roughly in half compared to standard chargers, so a 5.0 Ah battery might charge in 1.5 hours instead of 3.
- The charger wattage matters as much as the charger type — a 145-watt fast charger will charge faster than a 90-watt one.
- DeWalt batteries within the same voltage family (20V, 60V FlexVolt) can use the same charger, but charge times will vary by battery size.
Standard chargers versus fast chargers
A standard DeWalt charger typically delivers 60 watts and is designed to charge batteries safely without generating excess heat. On a standard charger, a 2.0 Ah battery takes about 50 minutes, a 4.0 Ah takes roughly 90 minutes, and a 5.0 Ah takes 2 to 2.5 hours. These chargers are often included free with tool kits and work well if you are not in a hurry or charge overnight.
A fast charger — such as the DeWalt DCD740C or DCD771C2 models — delivers 90 to 145 watts and cuts charge time by 40 to 50 percent. The same 5.0 Ah battery that takes 2.5 hours on a standard charger might take 1.25 to 1.5 hours on a fast charger. Fast chargers cost more upfront but are worth the investment if you use your tools regularly and cannot afford downtime between jobs.
DeWalt also makes dual-chemistry chargers that work with both lithium-ion and nickel-cadmium batteries, though these are less common now. Stick with lithium-ion batteries and chargers if you are buying new — they charge faster, hold a charge longer, and weigh less.
Charge times by battery size and charger type
The table below shows typical charge times for common DeWalt battery sizes on both standard and fast chargers. These times assume the battery is at room temperature and the charger is functioning normally. Actual times may vary slightly depending on the specific charger model and battery age.
| Battery Capacity | Standard Charger (60W) | Fast Charger (90–145W) |
|---|---|---|
| 1.3 Ah | 30–40 minutes | 15–25 minutes |
| 2.0 Ah | 45–60 minutes | 25–40 minutes |
| 4.0 Ah | 90–120 minutes | 45–60 minutes |
| 5.0 Ah | 120–150 minutes | 60–90 minutes |
| 6.0 Ah | 150–180 minutes | 75–120 minutes |
Cold batteries charge more slowly — a battery at 32°F may take 50 percent longer to charge than one at 70°F. DeWalt chargers have built-in temperature sensors that slow the charge rate in cold conditions to protect the battery. If you work outdoors in winter or store batteries in an unheated space, plan for longer charge times during cold months.
Why charge time matters for your workflow
If you own one battery, charge time directly affects how long you wait between jobs. A single 5.0 Ah battery on a standard charger means a 2.5-hour wait if the battery dies mid-project. On a fast charger, that same battery is ready in 1.5 hours. For professionals or anyone who uses tools daily, this difference adds up to real time lost.
The practical solution is to own two batteries and one fast charger. While one battery charges, you use the other. This approach costs more initially but eliminates downtime and extends battery life because neither battery is charged and discharged constantly. A second 5.0 Ah battery costs $60 to $100, and a fast charger costs $50 to $80 — a reasonable investment if your tools are part of your work. For occasional users, a standard charger and one battery are usually sufficient. Charge overnight or between weekends, and you will not notice the longer charge time.
Factors that slow down charging
Cold temperatures are the biggest culprit. DeWalt chargers automatically reduce the charge rate when a battery is below 50°F to prevent damage. A battery at 32°F might take twice as long to charge as one at 70°F. If you work in winter or store batteries in an unheated garage, expect slower charging and plan your work schedule accordingly.
An old or degraded battery also charges more slowly. Lithium-ion batteries lose capacity over time — a battery that is two years old will not hold as much charge as a new one, and it may charge more slowly as well. If a battery that once charged in 90 minutes now takes 2 hours, the battery is likely aging and will soon need replacement. You can test this by charging the same battery on a different charger to rule out charger problems.
A charger that is not functioning properly will also extend charge times. If your charger is plugged into a weak outlet or an extension cord, it may not deliver full power. Always plug the charger directly into a wall outlet. If charge times suddenly increase and the battery is not cold or old, the charger may be failing and should be tested or replaced.
DeWalt FlexVolt and 60V batteries
DeWalt's FlexVolt batteries are 60-volt packs that can also run on 20-volt tools by automatically stepping down the voltage. These larger batteries charge more slowly than 20-volt packs because they hold much more energy. A 6.0 Ah FlexVolt battery on a standard charger takes 3 to 4 hours. On a fast charger, it takes 1.5 to 2 hours.
FlexVolt chargers are designed specifically for these larger batteries and deliver higher wattage — often 145 watts or more. If you own FlexVolt tools, use a FlexVolt-compatible charger to get the fastest charge times. Mixing charger types (using a 20-volt charger on a FlexVolt battery, for example) will result in slower charging or may not work at all. Always check the voltage rating on both the battery and charger before connecting them.
Extending battery life while charging
Lithium-ion batteries last longer if you do not let them fully discharge before recharging. Charge your battery when it reaches 20 to 30 percent capacity, not when it is completely dead. This habit extends the overall lifespan of the battery by 20 to 30 percent and keeps your tools ready when you need them.
Avoid charging in extreme heat or cold. Ideally, charge batteries between 50°F and 85°F. Charging a hot battery (one you just used) can shorten its life. Let the battery cool for 15 to 30 minutes before putting it on the charger if you have been using it continuously. Store batteries in a cool, dry place when not in use — a battery stored in a hot garage or shed will lose charge faster and degrade more quickly than one stored indoors at room temperature. If you do not use your tools for months, store the batteries at 40 to 60 percent charge, not fully charged or fully drained.
Frequently Asked Questions
Can I use a DeWalt charger from one voltage family on a battery from another?
No. A 20-volt charger will not work on a 60-volt FlexVolt battery, and vice versa. Each voltage family has its own charger connector. Using the wrong charger can damage the battery or charger. Always match the charger voltage to the battery voltage.
Does leaving a battery on the charger overnight damage it?
No. DeWalt chargers have automatic shutoff that stops charging once the battery is full. You can leave a battery on the charger indefinitely without harm. However, for long-term storage of more than a month, remove the battery from the charger and store it separately in a cool place.
Why is my battery charging slower than it used to?
Cold temperature is the most common reason — batteries charge 50 percent slower below 50°F. If the battery is warm and still charging slowly, the battery may be aging or the charger may be failing. Try charging the battery on a different charger if you have one available to rule out charger problems.
What is the difference between a 1-hour charger and a 30-minute charger?
The wattage. A 30-minute charger delivers more power (usually 145 watts) than a 1-hour charger (usually 90 watts). The faster charger costs more but cuts charge time in half. For daily users, the faster charger pays for itself in convenience and reduced downtime.