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.
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.
Best For
- Existing Worx PowerShare users
- Anyone building a multi-tool Worx setup
- Regular users who value reliability over the lowest price
- Anyone who wants to avoid the uncertainty of third-party batteries
Why It’s Worth Buying
- Reliable, fade-free performance across compatible Worx tools
- One battery, many tools through the PowerShare system
- Built-in protection and dependable fit
- Good long-term durability from my own use
What to Keep in Mind
- More expensive than many third-party batteries
- Standard charging can be slow with the basic charger
- Larger 4.0Ah and 5.0Ah batteries add weight to lighter tools
Bottom line: If you already use Worx PowerShare tools, the official 20V battery is the sensible long-term choice. It costs more than many third-party alternatives, but the dependable fit, wide compatibility and proven longevity make the extra spend worthwhile.
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
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.
PowerShare Battery Performance Across My Worx Tools
I use Worx PowerShare batteries across several garden tools, which gives a useful picture of how battery demand changes between lighter trimming jobs and higher-draw tools such as mowers and scarifiers.
| Worx Tool | Battery Setup | My Typical Use / Runtime | Review |
|---|---|---|---|
| WG163E Grass Trimmer | 1 × 20V | Around 40–45 mins for lighter trimming and edging | Read the WG163E review → |
| WG543E Leaf Blower | 1 × 20V | Around 30–35 mins; higher drain at stronger airflow | Read the WG543E review → |
| WG264E Hedge Trimmer | 1 × 20V | 50+ mins during routine hedge maintenance | Read the WG264E review → |
| WG324E Pruning Saw | 1 × 20V | Around 30–35 mins; varies heavily with branch size | Read the WG324E review → |
| WG779E Lawnmower | 2 × 20V | Runtime varies with grass length, density and terrain | Read the WG779E review → |
| WG252E Pole Hedge Trimmer | 1 × 20V | 50+ mins during lighter hedge maintenance | Read the WG252E review → |
| WG855E.9 Scarifier | 2 × 20V | Runtime varies with depth, moss/thatch density and lawn conditions | Read the WG855E.9 review → |
What this shows: PowerShare works particularly well when you own several Worx tools. Lighter tools such as hedge trimmers are relatively easy on the battery, while higher-draw machines such as the mower, blower and scarifier naturally use considerably more power.
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?
If you already use Worx PowerShare tools, the official Worx 20V battery is an easy recommendation. It delivers reliable, fade-free power, works across a wide range of compatible tools, and my own batteries have continued performing well after several years of regular use.
The main drawbacks are the higher price compared with third-party batteries and relatively slow charging with the standard charger. However, for regular Worx users, the dependable fit, built-in protection and wider PowerShare compatibility make the extra cost worthwhile.
Verdict: if you want a battery you can rely on across your Worx tools, I’d stick with the official PowerShare battery.
