As a gardener who uses Worx tools daily, I rely on these batteries every single day — often swapping between two or three to power through longer sessions. Over the seasons, I’ve seen what these batteries can handle and where they start to show wear.
That’s where the Worx 20V lithium battery comes into play — a reliable option for anyone who needs lasting power from their cordless kit. It’s a mainstay in the Worx PowerShare range and a trusted pick for home users and pros alike. If you’re still weighing up the tools themselves, we’ve also covered whether Worx tools are any good in a full breakdown.
This review is based primarily on my own Worx 20V 4.0Ah PowerShare Pro battery, which I use across several Worx garden tools. Other capacities are mentioned for comparison, but runtime, weight and charging time vary between battery and charger models.
Worx 20V Lithium Battery at a Glance
Before getting stuck into the nitty-gritty of performance and comparisons, here’s a quick look at what the Worx 20V lithium battery actually offers.
Key Specs at a Glance
- Voltage: 20V Max (18V nominal)
- Battery Type: Rechargeable lithium-ion
- Amp-Hour Options: 2.0Ah, 4.0Ah, and 5.0Ah
- Compatibility: Works across the Worx PowerShare range
Why That Matters
- 20V Max power keeps things consistent, even when you’re putting your tools through their paces
- Bigger Ah = longer runtime — ideal for chunkier jobs or tools that need a bit more juice
- Lithium-ion cells hold strong all the way down — no power fade halfway through the job
- PowerShare system means one battery can run everything from your drill to your trimmer
So whether you’re new to the Worx lineup or building out a tool setup bit by bit, the Worx 20V lithium battery gives you a solid, no-fuss starting point that can grow with your PowerShare tool kit.
Real-World Performance
So, how does the Worx 20V lithium battery hold up once it’s out of the box and into the job?
In day-to-day use, it delivers reliable, fade-free power across a solid mix of cordless tools. Whether you’re tidying up the lawn or clearing paths with a blower, you’ll find it holds its charge well — even when pu
Tested Tools (Using the 4.0Ah Battery)
- Worx WG163E Cordless Grass Trimmer: Around 40–45 minutes of runtime per charge
- Worx WG543E Cordless Leaf Blower: Roughly 30-35 minutes of strong airflow
- Worx WG264E Hedge Trimmer: Typically 50+ minutes of trimming time
- Worx WG324E Compact Pruning Saw: Delivers 30–35 minutes of cut time depending on material
- Worx WG779E Lawnmower (40V): Uses dual 20V batteries — runtime varies by load and terrain
- WG252E WORX 18V Cordless Pole Hedge Trimmer: Uses a single 20v battery, typically 50+ minutes of trimming time
My Reviews for the tested products
My Experience After Three Years
Plenty of folks report that even after a year or two of regular use, these batteries keep showing up. Of course, if you’re hammering through a full day with high-draw tools, you’ll likely cycle through a couple. But the performance stays steady right through.
The real win? The PowerShare system. Swapping batteries between tools keeps the job flowing without waiting on charge time. That makes the 20V setup a practical, no-faff solution for busy DIYers and gardeners alike.
If you’re after dependable runtime and solid power with no voltage wobbles mid-task, the Worx 20V lithium battery ticks all the right boxes.
Charging the Worx WA3644 4.0Ah Battery
I own and use all three of the chargers below with my WA3644 4.0Ah PowerShare Pro batteries. These are the approximate charging times I experience in normal use:
| Charger | Setup | Approximate charging time |
|---|---|---|
| WA3880 2A charger | One WA3644 battery | 2 hours |
| WA3883 dual-port charger | One WA3644 battery | 1 hour |
| WA3883 dual-port charger | Two WA3644 batteries | 2 hours |
| WA3867 6A rapid charger | One WA3644 battery | 45 minutes |
Charging can take slightly longer when a battery is particularly hot or cold. After demanding work, I allow the battery to cool before placing it on the charger.
Tool Compatibility & PowerShare Benefits
One of the biggest perks of the Worx 20V lithium battery is how much ground it covers. Thanks to the Worx PowerShare system, you can run a whole fleet of tools off just one battery — no faff, no fuss.
What is PowerShare?
Compatible across a wide range of Worx garden and DIY tools in the PowerShare platform. Multiple 20V batteries can also be combined to power compatible 40V and 80V tools.
Compatible Tool Types
- Grass trimmers (like the WG163)
- Hedge trimmers
- Leaf blowers (e.g. WG545)
- Drills and impact drivers
- Circular saws
- Sanders and multi-tools
It’s a proper time-saver — fewer batteries to charge, fewer chargers to keep track of, and more flexibility on the job.
Why It Works So Well
- Saves money: No need to shell out for a new battery every time you grab a new tool
- Keeps things moving: Swap batteries on the fly and carry on working
- Tidier setup: Say goodbye to battery clutter in your shed or van
If you’re building up your kit or already have a few Worx tools in the mix, the Worx 20V lithium battery and PowerShare platform make powering your tools easier, quicker, and a lot less expensive in the long run.
Longevity & Warranty
Battery lifespan varies with workload, charging frequency, storage temperature and how deeply the pack is discharged. My own batteries have been used for 3 years across several garden tools. They still perform reliably, although runtime is the first thing likely to decline as a lithium-ion pack ages.
Signs It’s Wearing Out
- You’re getting less runtime than usual
- It takes longer to charge
- It bogs down more easily under load
Battery fade is just part of the deal, but you can slow it down:
- Avoid fully draining it
- Don’t leave it sitting flat for weeks
- Steer clear of hot storage spots — like that sun-baked shed
Warranty Coverage
The WA3644 is a PowerShare Pro battery. Worx UK normally provides a three-year warranty, extendable to five years when the battery is registered within 30 days. Warranty conditions apply, and professional or trade use may not be covered.
Who Should Buy the Worx 20V Battery?
The Worx 20V lithium battery isn’t just another extra — it’s the backbone of the whole PowerShare setup. So, who’s it really for?
Spot-On For
- Worx PowerShare users: If you’re already running 20V tools, grabbing an extra battery (or two) is a no-brainer.
- Regular DIYers: Builders, handypeople, and anyone who picks up a tool more days than not.
- Gardeners: From hedge trimmers to blowers, the 20V system covers most bases without hassle.
- Anyone building their kit bit by bit: You can start with one battery and grow your tool lineup over time — no need to splash out on a full bundle every time.
Frequently Asked Questions about the Worx 20v Battery
In many cases, yes — but it depends on the brand. Some lack the built-in protections found in official models, which can lead to overheating or short lifespan. If you do buy third-party, read verified reviews and avoid anything too cheap to be true.
The official 4.0Ah model hits the sweet spot for performance and price. It lasts longer, charges reasonably fast, and runs most tools well.
With sensible use and a bit of TLC: 3 to 5 years is a fair shout.
If you’re out there grafting regularly — absolutely. If it’s more of a now-and-then thing, a third-party might get you by — just don’t expect it to go the distance.
Worx’s 20V Max batteries operate in the same nominal-voltage class commonly described as 18V, and many Worx 18V and 20V PowerShare products are compatible. However, older and discontinued tools can differ, so check the exact tool and battery model before buying rather than relying on voltage alone.
Some do, some don’t. It really depends on the brand. Check reviews first if you’re thinking of going that route.
Final Verdict: Is It Worth It?
So then — is the Worx 20V lithium battery actually worth your hard-earned cash? If you’re already using PowerShare tools, the answer’s a confident yes.
The Good Stuff
- Reliable performance across all sorts of tools
- Fade-free power from start to finish
- Solid build and built-in safety features
- Works across the whole PowerShare range — one battery, many tools
- Backed by a proper warranty and support if anything goes wrong
What Holds It Back
- Costs a bit more upfront than third-party batteries
- Standard charger is slow unless you upgrade to a faster one
The Bottom Line
If you’re using your tools regularly — or just want to build out a flexible, future-ready kit — the official Worx 20V battery delivers. You can check the latest prices and bundles on the official Worx UK site. It’s dependable, it fits like a glove, and it saves you hassle over the long run.
Verdict: If you want something that just works — go official. If you’re happy to compromise a little and save a few quid, a third-party might cover you in a pinch.
