With the popularity of cordless tools, the battery has become a necessity. With so many options to choose from, it’s easy to get confused. But each type of battery has its own unique characteristics.
So you might be interested to learn the tool battery capacity comparison.
Charging time takes more on higher amp per hour batteries. Hence, 6Ah takes the most time. Due to capacity, a 6Ah battery lasts way longer. But the discharge rate of a 6Ah is also the highest. The 2Ah battery size is the smallest, so it’s the 2Ah battery is the lightest battery in this comparison.
But, this information is just the tip of the iceberg. We need to dive deeper for a better understanding of each battery.
So, let’s go through this article for a better understanding.
2Ah vs 3Ah
Let’s see the difference between 2Ah vs 3Ah at a glace:
| Factors | 2Ah | 3Ah |
| Weight | 0.80 Pounds | 1 Pound |
| Charge Time (From 0%) | 20mins | 35mins |
| Battery Capacity | 2 Amp per Hour | 3 Amp per Hour |
| Battery Size | Smaller | Bigger than 2Ah |
| Battery Runtime | 1-2 hours | 1-3 hours |
| Discharge Rate | 2 times the battery charges | 3 times the battery charges |
| Nominal Voltage | 3.6 V | 3.6 V |
| Temperature | Lower | More than 2Ah |
Let’s talk about the weight of each battery first. You might be wondering, does weight matter for an Ah battery? Well, absolutely it does. Because weight can become an obstacle to your accuracy of using a tool.
2Ah tool battery typically weighs around 0.8 Pounds. On the other hand, the 3Ah tool battery weighs around 1 pound. 3Ah batteries are almost 20% to 30% heavier.
Now comes the power difference between 2Ah and 3Ah. A 2Ah battery will provide 2 amps for an hour or 1 amp for two hours. Nevertheless, a 3Ah will provide 1 amp for 3 hours or 3 amp for 1 hour.
So, it’s clear that a 3Ah battery can provide more power for a longer period. Now, let’s talk about the discharge rate.
A 2Ah battery discharge rate is lower than a 3Ah battery discharge rate. But, it depends on the C rate. For example, a 2Ah battery with a 1C rate will discharge at 2AmpsX1=2A. With the same C rate, a 3Ah battery will discharge at 3AmpsX1=3A.
So, it is clear that the 3Ah battery will have a higher discharge rate.
DEWALT 20V MAX Battery, Compact 2.0Ah (DCB203)
- Compact Lithium Ion pack of DEWALT 20V battery provides up to 33% more capacity than standard 20V MAX* battery packs
- 3-LED fuel gauge system of DEWALT battery allows immediate feedback on state of charge
- No memory and virtually no self-discharge for maximum productivity and less downtime
- Lightweight design and quick 35-minute charge time
- Compact Lithium Ion pack provides up to 33% longer run-time
- 3-LED Fuel Gauge System
- Lightweight design and quick 35 minute charge time
- Compatible with the entire Line of DEWALT 20V MAX Tools
Now comes the nominal voltage. It means the average voltage of a cell. Both 2Ah battery and 3Ah battery has the same nominal voltage, which is 3.6v. So, both batteries will work the same.
A 2Ah battery’s operating temperature is lower than a 3Ah battery. Temperature is particularly important for Ah batteries. Because it affects the working rate. If the temperature is too high, your battery may supply less power.
Lastly, let’s talk about the cost. When comparing the prices of 2Ah and 3Ah batteries across different brands, such as Dewalt, Makita, Milwaukee, and Bosch, there are notable variations in the price ranges.
The price range varies from brand to brand, even within brand. Like the cost of DeWalt 2Ah vs 3Ah differs, also the price of Makita 2Ah vs 3Ah.
Can I Use A 3Ah Battery Instead Of An 2Ah?
Yes, you can use a 3Ah battery instead of a 2Ah battery. Both the 2Ah and 3Ah batteries have the same nominal voltage, so they will work the same.
In fact, many manufacturers design their products to be compatible with different battery capacities. For example, Bosch 12v 2Ah vs 3Ah will work the same and can be used interchangeably.
2Ah vs 4Ah
Check out the difference between 2Ah and 4Ah at a glance:
| Factors | 2Ah | 4Ah |
| Weight | 0.80 Pounds | 1.2 Pounds |
| Charge Time (From 0%) | 20mins | 43 mins |
| Battery Capacity | 2 Amp per Hour | 4 Amp per Hour |
| Battery Size | Smaller | Bigger than 2Ah |
| Battery Runtime | 1-2 hours | 1-4 hours |
| Discharge Rate | 2 times the battery charges | 4 times the battery charges |
| Nominal Voltage | 3.6 V | 3.6 V |
| Temperature | Lower | More than 2Ah |
A 2Ah battery is almost 35% lighter. The size also varies in both the power tool batteries. By now you know a 4Ah battery has a higher power capacity than 2Ah battery. It’s not surprising that a 4Ah battery lasts two times longer than a 2Ah battery. This implies that a 4Ah battery takes more time to charge than a 2Ah battery.
Source: ubuy.com
However, a 4Ah battery also discharges twice the 2Ah battery. At 1C rating, 4Ah battery discharges at 4Amps. Which is twice the 2Ah battery.
The nominal rating of both the battery is the same. So, you won’t be getting any difference here. But, a 4Ah battery gets hotter than 2Ah battery if used for a long period.
Lastly, a 4Ah battery is more expensive than a 2Ah battery.
Freeman PEL2AHB 20V 2AH Lithium-Ion Replacement Slide Battery for Cordless Tools
- 20V 2Ah lithium-ion slide battery provides long lasting power for cordless tools
- Compatible with Freeman’s P12IW Cordless and Brushless 20 Volt 1/2″ Impact Wrench, PE20V2118G Cordless 20 Volt 2-in-1 18-Gauge 2″ Nailer and Stapler, PE4118GF Cordless 20 Volt 4-in-1 18-Gauge 2″ Flooring Nailer and Stapler, and PEL4ABC 20 Volt Electric Lithium-Ion Quick Battery Charger
- Long lasting 20 volt lithium-ion battery fully charges in 45 minutes
- Three indicator lights show how much charge remains in battery
- Overheating and overcharging protection extend the life of the battery
Are 2Ah And 4Ah Batteries Interchangeable?
Yes, 2Ah and 4Ah batteries are generally interchangeable. Despite the difference in physical size, they can be used interchangeably in many cases. This means that you can use a 4Ah battery in a device that originally came with a 2Ah battery, and vice versa.
2Ah vs 5Ah
Here’s how 2Ah and 5Ah batteries differ:
| Factors | 2Ah | 5Ah |
| Weight | 0.80 Pounds | 1.4 Pounds |
| Charge Time (From 0%) | 20mins | 50mins |
| Battery Capacity | 2 Amp per Hour | 5 Amp per Hour |
| Battery Size | Smaller | Bigger than 4ah |
| Battery Runtime | 1-2 hours | 1-5 hours |
| Discharge Rate | 2 times the battery charges | 5 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | Lower | More than 4Ah |
The weight of a 5Ah battery is 50% heavier than a 2Ah battery. It can be very hard for you to handle a tool.
Regardless of weight if you become comfortable with 5Ah batteries then good news! You will get more runtime and higher power with a 5Ah battery. But, the charging time is more for a 5Ah battery than for a 2Ah battery.
The nominal power is slightly higher for a 5Ah battery than for a 2Ah battery. This means you can have higher efficiency using a 5Ah battery. A drilling machine with a 5Ah battery is 10% faster than a 2Ah battery.
The efficiency rate varies, but in all cases, a 5Ah battery will be more efficient. So, considering to buy a 5Ah battery already? Well, hold your horses! The discharge rate of a 5Ah battery is 5Amps (1C rated). Nevertheless, the discharge rate of the 2Ah battery is 2Amps (1C rated). So, the discharge rate is more than twice for a 5Ah battery.
Battery Runtime for each battery types
The operating temperature of a 5Ah battery is hotter than a 2Ah battery. Also, the battery size is bigger than a 2Ah battery. So, a tool with a 2Ah battery may not support a 5Ah battery.
Lastly, the cost. A 5Ah battery is again more expensive than a 2Ah battery.
Milwaukee M18 18-Volt Lithium-Ion XC Extended Capacity Battery Pack 5.0Ah
- Product will either come in original packaging that is in less than perfect shape and has been opened to inspect contents or will come in non-retail packaging (brown/white box or white/clear bag). Laden with REDLINK Intelligence to provide optimized performance and overload protection using total system communication between tool, battery and charger
- Advanced design minimizes heat buildup, protects the pack from drops and vibrations, and diverts water away from electronics
- Onboard fuel gauge displays remaining run time for less downtime on the job
- All-weather performance: delivers fade-free power in extreme job-site conditions (below 0F/-18C)
- Recharges in 90 minutes or less
Can I Use A 5Ah Battery Instead Of 2Ah?
Yes, you can use a 5Ah battery instead of a 2Ah battery in many cases. While there may be differences in physical size, 5Ah batteries are generally interchangeable with 2Ah batteries.
2Ah vs 6Ah
The difference between 2Ah and 6Ah batteries is as follows:
| Factors | 2Ah | 6Ah |
| Weight | 0.80 Pounds | 2 Pounds |
| Charge Time (From 0%) | 20mins | 55mins |
| Battery Capacity | 2 Amp per Hour | 6 Amp per Hour |
| Battery Size | Smaller | Bigger than 5ah |
| Battery Runtime | 1-2 hours | 1-6 hours |
| Discharge Rate | 2 times the battery charges | 6 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | Lower | More than 5Ah |
The 6Ah battery is the heaviest battery in this comparison. It’s almost 80% to 90% heavier than a 2Ah battery. So, you need to have a steady hand for using a 6Ah battery.
Moving on, a 6Ah battery has a higher capacity than a 2Ah battery. So, the charge time is more for a 6Ah battery than for a 2Ah battery. It takes about an hour from 0%-100%.
Because of such an amperage supply, a 6Ah battery is the most efficient one. It can do work almost 20% more efficiently than a 2Ah battery.
However, the discharge rate is higher for a 6Ah battery. It discharges at 6Amps (1C rating) which is three times more than a 2Ah battery. So, in the long run, a 6Ah battery can cause issues.
KUNLUN 40V 6.0Ah Lithium-ion Battery for Ryobi 40-Volt
- Battery Type: Lithium-ion | Voltage: 40V | Capacity: 6000mAh | Removable & Rechargeable | High capacity battery for extended run time. Please note: let the battery cool down before recharge;
- This battery compatible for ALL RYOBI 40-Volt lithium-ion tools (string trimmer, lawn mower) and chargers, including RY40200 RY40403 RY40204 RY40530 RY40460 RY40180 RY40250, and OP403A OP401 ZROP401 OP400A RY40440;
- OP4050A OP4015 OP4026 OP40201 OP40261 OP4030 OP40301 OP4040 OP40401 OP4050 OP40501 OP40601;
- Built-in 4 LED lights on the battery that indicate the remaining power for user convenience and over-molded edges for impact protection;
- The lithium-ion battery is CE, FCC, ROHS certified, built-in over-charge, over-discharge, over-voltage, over-current, and over-heating protections, safety for the battery and your RYOBI 40-Volt collection.
As we mentioned before, it takes longer to fully charge a 6Ah batteries. However, you can significantly cut the time short using our recommender Li-ion battery chargers:
These chargers will get your batteries ready to roll in no time!
Like a 5Ah battery, a 6Ah battery may not be interchangeable with a 2Ah battery. Because the battery is bigger in size. Also, compatibility can be an issue.
In the end, a 6Ah battery is almost as expensive as a 5Ah battery. But, a 6Ah battery is more expensive than a 2Ah battery per usual.
That’s everything regarding the in-depth comparison. Whenever you use a power tool, always follow the power tool safety measures.
3Ah vs 4Ah
A 3Ah battery differs from a 4Ah battery in the following ways:
| Factors | 3Ah | 4Ah |
| Weight | 1 Pound | 1.2 Pounds |
| Charge Time (From 0%) | 35mins | 43mins |
| Battery Capacity | 3 Amp per Hour | 4 Amp per Hour |
| Battery Size | Bigger than 2ah | Bigger than 3ah |
| Battery Runtime | 1-3 hours | 1-4 hours |
| Discharge Rate | 3 times the battery charges | 4 times the battery charges |
| Nominal Voltage | 3.6 V | 3.6 V |
| Temperature | More than 2Ah | More than 3Ah |
The main difference between them is in their capacity, measured in Amp-hours (Ah), with one at 3Ah and the other at 4Ah. This means the 4Ah battery can store more energy and potentially provide a longer runtime.
Additionally, the batteries differ in weight, with 3Ah battery weighing 1 pound and the 4Ah one 1.2 pounds. The charge time for the batteries also varies, with one requiring 35 minutes to charge from 0% and the other taking 43 minutes.
The discharge rate is different as well, with the 4Ah battery discharging at four times the rate of its charge.
VANTTECH 2PACK LBXR20 20V 3.0Ah
- Type: Lithium ion | Voltage: 20V MAX | Capacity: 3.0Ah/3000mAh | Watt: 60Whh
- 100% Compatibility for Black & Decker 20v max power tools LST201 LBXR20 LB20 LBX20 LBXR2020-OPE LB2X4020 LBXR20B-2 BDCDMT120 CHH2220 LDX120C LDX120SB LGC120 LHT2220 LST120 LST220 LSW20.
- Highest quality standards, integrated microchip prevents overcharging and lengthens battery life.
- No memory effect. It can be charged or discharged as needed without loss of capacity. Built-in integrated microchip prevents overcharging and other malfunction to prolong battery life.Our products are CE/FCC/RoHS certified, tested by manufacturer to match or exceed specifications of OEM products.
3Ah vs 5Ah
The following characteristics distinguish a 3Ah battery from a 5Ah battery:
| Factors | 3Ah | 5Ah |
| Weight | 1 Pound | 1.4 Pounds |
| Charge Time (From 0%) | 35mins | 50mins |
| Battery Capacity | 3 Amp per Hour | 5 Amp per Hour |
| Battery Size | Bigger than 2ah | Bigger than 3ah |
| Battery Runtime | 1-3 hours | 1-5 hours |
| Discharge Rate | 3 times the battery charges | 5 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | More than 2Ah | More than 4Ah |
The battery capacity of the 3Ah battery is lower than the 5Ah battery, meaning it can store less energy. The 5Ah battery also has a larger physical size. In terms of weight, the 1.4-pound battery is heavier than the 1-pound battery.
The charge time for the 3Ah battery is 35 minutes, while the 5Ah battery takes 50 minutes to fully charge. When it comes to battery runtime, the 5Ah battery can provide power for a longer duration, ranging from 1 to 5 hours, whereas the 3Ah battery lasts for 1 to 3 hours.
DEWQKI Upgraded 3.0Ah 20V Battery DCB203
- 3000mAh high capacity battery, provide more power,last longer time, make you work more effective;
- Lithium no memory effect, can be charged or discharged as needed without loss of capacity
- This 2-Pack 20v batteries with 3-LED Fuel Gauge System allows immediate feedback on state of charge.
- Built-in integrated microchip prevents overcharging, self-discharge and lengthens battery life.
- Comply with FCC RoHS and CE security testing standards.
The discharge rate is also different, with the 5Ah battery able to handle higher usage demands, being able to charge up to 5 times.
Finally, there are variations in nominal voltage and temperature tolerance between the two batteries. These factors contribute to the overall differences in performance, size, capacity, and cost between the two batteries.
3Ah vs 6Ah
3Ah batteries differ from 6Ah batteries in the following ways:
| Factors | 3Ah | 6Ah |
| Weight | 1 Pound | 2 Pounds |
| Charge Time (From 0%) | 35mins | 55mins |
| Battery Capacity | 3 Amp per Hour | 6 Amp per Hour |
| Battery Size | Bigger than 2ah | Bigger than 5ah |
| Battery Runtime | 1-3 hours | 1-6 hours |
| Discharge Rate | 3 times the battery charges | 6 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | More than 2Ah | More than 5Ah |
These two batteries differ in several key aspects.
Firstly, the battery capacity varies, with one battery having a capacity of 3Ah and the other having a capacity of 6Ah. This means that the latter battery can store twice as much energy as the former.
Secondly, the weight differs, with one battery weighing 1 pound and the other weighing 2 pounds. The heavier battery likely has a larger size and capacity, contributing to its increased weight.
ARyee 6.0Ah 18V P108 Battery Replacement for Ryobi
- High Capacity: 6000mAh
- Voltage:18V
- Battery Type: lithium ion, long running performance.
- Built-in Protection against overcharging, over discharge, over current, provides short circuit protection and steady voltage circuit.
- Remaining capacity display, 4 LED display.
- Alows user to monitor battery charge, Avoid excessive use and improve working life
Thirdly, the charge time also varies, with one battery taking 35 minutes to charge from 0% to full, while the other battery takes 55 minutes. The former battery charges faster than the latter.
Other differences include the discharge rate, nominal voltage, temperature range, battery size, runtime, and cost. The battery with higher specifications usually provides better performance but may come at a higher price.
Although 6Ah batteries are priced at a higher range, it can be different based on brands. Like the price range can vary between makita 3ah vs 6ah batteries and bosch 12v 3ah vs 6ah batteries.
4Ah vs 5Ah
The following are the differences between 4Ah and 5Ah batteries:
| Factors | 4Ah | 5Ah |
| Weight | 1.2 Pounds | 1.4 Pounds |
| Charge Time (From 0%) | 43mins | 50mins |
| Battery Capacity | 4 Amp per Hour | 5 Amp per Hour |
| Battery Size | Bigger than 3ah | Bigger than 4ah |
| Battery Runtime | 1-4 hours | 1-5 hours |
| Discharge Rate | 4 times the battery charges | 5 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | More than 3Ah | More than 4Ah |
In terms of battery capacity, the 5Ah battery has a higher capacity than the 4Ah battery, meaning it can store more energy. Additionally, the 5Ah battery has a longer runtime, capable of powering devices for up to 5 hours compared to the 4-hour runtime of the 4Ah battery.
The 5Ah battery also has a higher discharge rate, allowing it to charge devices more times before depleting. Furthermore, the 5Ah battery weighs slightly more at 1.4 pounds compared to the 1.2-pound weight of the 4Ah battery.
GreenWorks 29472 G-MAX 40V Li-Ion 4Ah
- 40V LITHIUM-ION BATTERY – 4.0Ah battery provides 50% more capacity than the standard 2.0Ah battery pack. No memory and virtually no self-discharge for maximum productivity and less downtime
- COMPATIBLE WITH 60 plus TOOLS – Compatible with all Greenworks 40V products
- LED FUEL GAUGE – Integrated 4 LED fuel gauge provides immediate feedback on state of charge
- FAST CHARGE TIME – Charges in 1 hour with rapid charger and charges in 2 hours with standard charger
- 3 YEAR WARRANTY – Protect your investment with the Greenworks 3-year warranty. Note : Battery style and color may vary
- Diagnostic LED’s indicates when the charging process has completed
Lastly, the 5Ah battery has a higher nominal voltage of 4V compared to the 3.6V nominal voltage of the 4Ah battery.
The cost of these two batteries can depend based on brand. For example, 4ah vs 5ah ryobi battery can be different from 4ah vs 5ah battery DeWalt or Milwaukee 4ah vs 5ah.
4Ah vs 6Ah
Batteries with 4Ah and 6Ah capacities differ in the following ways:
| Factors | 4Ah | 6Ah |
| Weight | 1.2 Pounds | 2 Pounds |
| Charge Time (From 0%) | 43mins | 55mins |
| Battery Capacity | 4 Amp per Hour | 6 Amp per Hour |
| Battery Size | Bigger than 3ah | Bigger than 5ah |
| Battery Runtime | 1-4 hours | 1-6 hours |
| Discharge Rate | 4 times the battery charges | 6 times the battery charges |
| Nominal Voltage | 3.6 V | 4 V |
| Temperature | More than 3Ah | More than 5Ah |
These two batteries differ in several key aspects. Firstly, the 4Ah battery has a lower capacity compared to the 6Ah battery, meaning it can store less energy. Consequently, the 4Ah battery has a shorter runtime of 1-4 hours, while the 6Ah battery can last up to 1-6 hours.
Moreover, the 6Ah battery takes slightly longer to charge, needing 55 minutes compared to the 43 minutes required by the 4Ah battery. Additionally, the 6Ah battery is heavier, weighing 2 pounds, while the 4Ah battery weighs 1.2 pounds.
DEWALT 20V MAX* XR Battery, 4.0-Ah, 2-Pack (DCB204-2)
- DEWALT 20V Battery XR Lithium Ion pack provides up to 33% more capacity than standard 20V MAX* battery packs
- 3-LED fuel gauge system of DEWALT battery allows immediate feedback on state of charge
- No memory and virtually no self-discharge for maximum productivity and less downtime
- Individual pack weights 1.42 lbs allowing user maximum run-time in a lightweight battery
5Ah vs 6Ah
5Ah and 6Ah batteries differ in the following ways:
| Factors | 5Ah | 6Ah |
| Weight | 1.4 Pounds | 2 Pounds |
| Charge Time (From 0%) | 50mins | 55mins |
| Battery Capacity | 5 Amp per Hour | 6 Amp per Hour |
| Battery Size | Bigger than 4ah | Bigger than 5ah |
| Battery Runtime | 1-5 hours | 1-6 hours |
| Discharge Rate | 5 times the battery charges | 6 times the battery charges |
| Nominal Voltage | 4 V | 4 V |
| Temperature | More than 4Ah | More than 5Ah |
The primary difference is in their capacity, with one having a 5Ah capacity and the other having a 6Ah capacity. This means the second battery can store more energy and potentially provide longer runtime.
The second difference is their weight, with the first battery weighing 1.4 pounds and the second battery weighing 2 pounds. The second battery is slightly heavier.
Additionally, the charge time for the first battery is 50 minutes, while the second battery takes 55 minutes to charge fully.
Overall, the second battery offers higher capacity and longer charge time, but it comes at a slightly higher cost and weight.
Greenworks 40V 5A Rapid Charger
- High Performance 40V Lithium-Ion Battery Charger
- Diagnostic LED charging indicator. Communicates current charge level, and any battery or charger issues
- Can be used on bench top or mounted on the wall
- Charges all Greenworks 40V battery packs (except enhanced series)
- Easy storage and easy mounting
So, Which Battery Will Be Suitable For You?
It’s finally the decision time. So, which battery will be suitable for you.
Firstly, consider the work type. For small projects 2Ah, 3Ah or 4Ah battery will be enough. Also, these are lightweight so handling the tools are easier. Nevertheless, for big projects using the higher Ah battery is recommended like 5Ah or 6Ah.
Source: greenworkstools.eu
Secondly, consider how much battery time you need. If you work almost every day, go for 4Ah, 5Ah, or 6Ah. With those batteries, you need to charge less than 2Ah or 3Ah.
Lastly, consider the power tool. Some power tools require at least a 4Ah battery. With those power tools, you cannot use 2Ah or 3Ah.
Whatever you choose, should satisfy these three factors.
Frequently Asked Questions (FAQs):
Is It Possible to Utilize A 4Ah Battery Instead of A 2Ah Battery?
Yes, you can use a 4Ah batter instead of a 2 Ah battery. However, a 4Ah battery takes a long time to charge than a 2Ah battery. So, you may have to put a stop to your project for a period.
Can A Rechargeable Battery be Overcharged?
Yes, rechargeable batteries can be overcharged. But, overcharging may cause overheating and expire sooner.
What Is The Best Power Tool Battery?
Lithium-ion batteries (Li-Ion) are the best power tool battery at this moment. Because these are the modern rechargeable battery technology to be applied with cordless power tools.
Conclusion
That’s all regarding 2Ah vs 3Ah vs 4Ah vs 5Ah vs 6Ah.
To sum it all up, when comparing battery capacities ranging from 2Ah to 6Ah, it is evident that the higher the Ah rating, the greater the energy storage capacity. The choice of battery should depend on the specific power requirements and duration of use, ensuring optimal performance for the intended application.
Have a great day!
