5 things to know before selecting a power tool

If you’re looking for a new power tool, there are few terms you need to know that may influence which one you buy. Here’s a look at five of the most common things you’ll hear when you’re shopping for power tools.

Corded or Cordless?

The main difference here is power versus convenience. Corded tools are more powerful but need to have a nearby source of electricity. You can use a cordless tool anywhere but they may find the heavier duty jobs a struggle.

Tools that benefit from the power of being corded are the hard working ones like circular saws, sanders and angle grinders. Smaller tools such as drills and impact drivers are easier to use if they are cordless as the power cord can get in the way. Battery technology in cordless tools is getting better all the time and is now being used in tools that were traditionally operated by other means, for example chainsaws and lawnmowers.

What are Brushless Power Tools?

Brushless tools use a different type of motor that unlike conventional motors doesn’t require brushes. The current, drawn from the battery in a brushless tool, varies according to how hard the tool has to work, while the motor in a brushed tool goes full speed no matter what it’s doing. This means a fully charged battery in a brushless tool will last longer so you can get more done between charges. The motor in a brushless tool also has less moving parts meaning less wear and tear, so the tool lasts longer.

drill

Lithium-ion Powered Tools

All new cordless tools are powered by Lithium-ion (also Li-ion) batteries, which use lithium to store the charge in the battery. They have a number of advantages compared to earlier batteries:

  • Less weight – Lithium-ion batteries are lighter so carrying and using the tool is a lot easier
  • No memory – Lithium-ion batteries can be charged at any time. You don’t have to wait for the battery to be fully drained first, like you did with older batteries
  • More power – newer Lithium-ion batteries run with a higher voltage meaning higher draining devices can use batteries instead of mains power
  • What Does Amp-Hour Mean?

    Amp-hour is the term used to rate how much charge a battery can hold. It is commonly seen as “ah” or “Ah” on the battery with a number before it. The higher the number, the longer the battery will last before it needs to be charged. The trade-off is that batteries with high amp-hours are larger – and therefore heavier – than those with low ones.

    drill

    What's a Skin?

    A “skin” is the term for a cordless tool without a battery. The range of tools that one type of battery will fit is huge and getting bigger all the time. Once you’ve bought a tool that comes with a battery and charger, you can just buy the “skin” of your next tool and the same battery will fit it. This enables you to expand your tool box without paying for batteries you don’t need.

    Our Tip

    Get some great advice on how to select tools for your tool box.

    low water garden

    Planning & Projects How to create a low-water garden ‘Dry’ or ‘low-water’ gardening is a real art and, when done right, will provide you with an inviting landscape that uses very little water.

    Finished artificial green garden wall behind garden bench 02:05

    Planning & Projects How to create a green wall using artificial hedge Green walls are all the rage at the moment, but buying and maintaining one can be costly. Why not have a go at creating your own using pieces of artificial hedge – it looks great and will last the distance. Here’s how.

    reducing water

    How To Save Water How to reduce water usage Whether indoor or outdoor, there are lots of ways to be smart about water usage. And there are some simple actions that can make a big difference to your water bill.

    ring doorbell 01:53

    Doors How to install a ring doorbell The Ring video doorbell is a wireless doorbell which allows you to see who is at your front door. Find out how to install the Ring video doorbell yourself.

    a tree lit up with solar lights around it 01:46

    Garden Lighting How to install solar lights in your garden Solar lights are a great way to illuminate your pathways and highlight your garden beds at night. Install them yourself with these easy steps.

    how to organise your pantry 02:52

    Shelving & Storage How to organise your pantry Create an organisational system in your pantry with these handy storage hints. Trust us – its life changing!

    front door 01:31

    How To Paint How to paint your front door Make an entrance every darn day of the week by painting your front door a bold, enticing colour!

    how to hang pictures

    Walls The best way to hang pictures on a wall Learn the tricks to hanging your wall decor so it looks good – and doesn’t damage the plasterboard. Create an effortless-looking display by taking the time to consider spacing, proportion, frame styles and colour palettes.

    Health & Safety

    Please make sure you use all equipment appropriately and safely when following the advice in these D.I.Y. videos. You need to be familiar with how to use equipment safely and follow the instructions that came with the equipment. If you are unsure, you may feel it is safest to consult an expert, such as the manufacturer or an expert Bunnings Team Member.

    Grave health hazards are linked to asbestos, which may be in homes built up to 1990. Health hazards may result from exposure to lead-based paints in older materials and copper chromium arsenic (CCA) treated timber. For information on the dangers of asbestos, lead-based paint and CCA treated timber and tips for dealing with these materials contact your local council's Environmental Health Officer or visit our Health & Safety page. You can also use a simple test kit from Bunnings to indicate the presence of lead-based paint.
    Top of the content