Which Power Tool Batteries are the Best?
In today’s market, there are many power tool brands to choose from, each offering a range of features and benefits. One of the most important aspects to consider when selecting power tools is the battery that drives them. After all, what good is a power tool without the power? In this guide, we’ll unpack all the key features of a power tool battery such as voltage, capacity, and charge time, so that you have all the information to make an informed decision.
What are the Different Types of Power Tool Batteries?
There are four main types of power tool batteries: Lithium-Ion (Li-Ion), Graphene, Nickel-Cadmium (Ni-Cd), and Nickel-Metal Hydride (Ni-MH). Ni-Cd and Ni-MH batteries have largely been phased out in favour of newer technologies like Li-Ion. Li-Ion batteries have become the standard in the power tool industry due to their high energy density, lightweight nature, and lack of memory effect (loss of capacity over time). Graphene batteries are an emerging technology that promises even greater energy density and faster charging times than Li-Ion batteries. While some brands are yet to catch on, they represent the future of power tool battery technology.
Li-Ion
Pros:
Long battery life
Fast charging
High energy density
Lightweight
No memory effect
Cons:
Sensitive to extreme temperatures
Graphene
Pros:
Extremely fast charging (within 20 minutes*)
High energy capacity
Long lifespan (4x the cycle life of a Li-Ion battery*)
Very lightweight
Outstanding temperature control (10x slower temperature rise-up*)
Cons:
Costly
Not yet widely available across brands
What are the Key Features of a Power Tool Battery?
Voltage
Voltage (V) determines the power output of the battery. Higher voltage generally means more power. For example, 12V batteries are typically used in lightweight, compact tools designed for less demanding tasks. They are ideal general household use. 18V batteries are the most common in professional-grade power tools. They provide high power output, making them suitable for heavy-duty applications such as construction.
Battery Capacity (Ah)
Battery storage is measured in ampere hours (Ah) and indicates how long a battery can run before needing a charge.
An 18V power tool connected to an 18V battery uses 1Ah per hour. Therefore, if it’s running on the 4Ah DXB4 Li-Ion battery, it will have a run time of 4 hours load pending. If it’s running on the 5Ah GXB5 Graphene battery, it will have a run time of 5 hours load pending. Of course, this is just a rough estimate. The real run time will depend on how the tool is used.
Extending Your Battery Life
Looking after your batteries gives them the longest life possible. Store them in a cool, dry place, and be sure to protect the pins in the battery terminals of your power tools so that your batteries and tools can connect properly. It’s also best for battery health to keep your batteries charged when storing them.
Choosing the Right Battery for Your Needs
Factors to Consider
Voltage and Capacity:
Higher voltage batteries deliver more power, while higher amp-hours (Ah) mean longer runtime.
Compatibility:
Ensure the battery is compatible with your power tool model, as some manufacturers use proprietary designs.
Weight and Ergonomics:
Lightweight batteries can reduce user fatigue, especially for extended use.
Charging Time:
Consider fast-charging options to minimize downtime.
Durability and Longevity:
Look for batteries with impact-resistant housings and protection circuits.
Type of Battery:
Lithium-ion (Li-ion) batteries are popular for their high energy density and lack of memory effect.
Intended Use:
Consider the frequency and intensity of your tasks when selecting battery capacity.
Budget:
Li-ion batteries may have a higher upfront cost but can offer long-term benefits.
Interchangeable Battery Platforms:
Many brands offer platforms where one battery can power multiple tools, saving cost and time.
By carefully considering these factors, you can select the Replacement power tool battery that best meets your needs and ensures optimal performance for your projects.