If you’re new to DIY and thinking about buying a cordless reciprocating saw, one of the most important things to understand is how long the battery will last. This guide is written just for beginners in the UK and will help you choose the right saw by explaining battery run times, what affects them, and how to get the best performance.
What Is Battery Run Time?
Battery run time simply means how long your saw can work on a full charge. This depends on:
- The size of the battery (measured in Ah or amp-hours)
- The power of the saw (measured in volts, like 12V or 18V)
- What you’re cutting (wood uses less power than metal)
Common Battery Types & How Long They Last
Here’s an easy-to-read table showing how long different batteries usually last for typical DIY jobs:
| Battery Type | Voltage | Amp-Hours (Ah) | Light Jobs (e.g., wood) | Heavy Jobs (e.g., metal) |
|---|---|---|---|---|
| Small | 12V | 1.5Ah | 10–15 minutes | 5–7 minutes |
| Medium | 12V | 4.0Ah | 25–30 minutes | 12–15 minutes |
| Standard | 18V | 2.0Ah | 15–20 minutes | 8–10 minutes |
| Stronger | 18V | 4.0Ah | 30–40 minutes | 15–20 minutes |
| Long-Lasting | 18V | 5.0Ah | 40–50 minutes | 20–25 minutes |
| Extra Power | 18V | 6.0Ah+ | 50–60+ minutes | 25–30+ minutes |
💡 Tip: If you’re doing occasional DIY tasks around the house, a 4.0Ah or 5.0Ah 18V battery is a great choice. It gives you decent run time without adding too much weight.
What Affects Battery Life?
Several things can make your battery last longer or run out faster:
- What You’re Cutting
Softer materials like wood are easier to cut than metal or nails. - Blade Type
Using the right blade for the job makes cutting faster and easier. - Saw Speed Settings
Running your saw on high speed all the time uses more power. - How You Use It
If you stop and start instead of cutting non-stop, the battery lasts longer. - Battery Quality
Higher Ah batteries from trusted brands like Makita, DeWalt, Bosch, or Milwaukee tend to perform better.
Recommended Beginner Models in the UK (2026)
Here are a few DIY-friendly reciprocating saws you can get in the UK, with decent battery life:
- Makita DJR186Z 18V LXT – Great for home use with a 4.0Ah or 5.0Ah battery.
- DeWalt DCS367 18V XR – Compact and powerful; ideal for cutting wood and pipes.
- Bosch GSA 18V-LI C – Lightweight and beginner-friendly with good vibration control.
Most of these are sold “body only”, meaning you need to buy the battery and charger separately.
How to Get the Most from Your Battery
Here are some simple ways to make your battery last longer:
- Use the correct blade for the material you’re cutting.
- Let the saw rest after long cuts—don’t force it.
- Keep your batteries charged but not overcharged.
- Store batteries indoors at room temperature.
- Buy a spare battery if you plan to work for longer periods.
Final Thoughts
If you’re just getting started with DIY, a cordless reciprocating saw is a great tool to have. It’s perfect for cutting wood, plastic, pipes, and even nails. Just make sure to choose the right voltage and battery size for the type of work you’re doing. For most beginners, a 4.0Ah or 5.0Ah 18V battery offers the best mix of power and run time.