Cordless pool robots have largely overtaken corded models in the last few years, but "battery-powered" covers everything from budget vacuums to Beatbot's flagship AquaSense X. Here's what actually separates them, backed by real UK specifications rather than generic marketing claims.
Battery-powered vs corded: what's actually different?
Corded robotic pool cleaners run continuously from a mains-powered transformer via a long cable. They never run out of charge mid-clean, but the cable tangles, drags across the pool floor, and limits how far the robot can reach in irregularly shaped pools. Battery-powered (cordless) robots run on an internal lithium battery, so they move freely to every corner of the pool with no cable to manage — the trade-off is a finite runtime per charge.
Is there a cordless vacuum for swimming pools?
Yes — this is now the mainstream option rather than a niche one. Every current model in Poolbot's range (Sora P3, Sora P7, AquaSense 2 Pro, AquaSense 2 Ultra, AquaSense X) is fully cordless, running on a rechargeable battery rather than a mains cable.
How long do pool cleaner batteries last?
Two different things get asked here — runtime per clean, and battery lifespan over years of use.
Per clean: Poolbot's range delivers up to 5 hours of floor cleaning on a single charge across every model. The premium AquaSense range extends this further for surface skimming — up to 11 hours on the AquaSense 2 Pro, up to 10 hours on the AquaSense 2 Ultra and AquaSense X. A full recharge takes roughly 4.5 hours on every model.
Over time: like any lithium battery, expect a gradual reduction in runtime after hundreds of charge cycles — this is normal wear, not a fault. It's why the main body (battery, motor, PCB, sensors) carries a 2–3 year warranty depending on model, while faster-wearing consumables (filter basket, roller brush) carry a separate 3-month warranty. Full terms are on our Warranty Policy page.
Are battery-powered pool cleaners worth it?
For most UK pools, yes — the practical benefits outweigh the limitations:
- No tangled cable — full, unrestricted access to every part of the pool, including steps and corners a corded unit struggles to reach cleanly.
- No outlet required poolside — charge indoors, carry it out, drop it in.
- Faster setup and storage — no cable to coil and store separately.
The main limitation is runtime on very large pools — if your pool exceeds the model's rated coverage (3,200–4,300 sq ft depending on model), you may need two shorter sessions rather than one continuous clean. For the vast majority of UK domestic pools, a single charge comfortably covers the full pool.
What is the best battery-powered pool cleaner?
It depends on pool size, charging preference and budget:
| Model | Battery | Floor / Surface runtime | Charging | Price |
|---|---|---|---|---|
| Sora P3 | 10,000 mAh | 5 hrs / — | Plug-in cable | £998 |
| Sora P7 | 10,000 mAh | 5 hrs / 7 hrs | Plug-in cable | £1,428 |
| AquaSense 2 Pro | 13,400 mAh | 5 hrs / 11 hrs | Wireless dock | £1,948 |
| AquaSense 2 Ultra | 13,400 mAh | 5 hrs / 10 hrs | Wireless dock | £2,740 |
| AquaSense X | 13,400 mAh | 5 hrs / 10 hrs | AstroRinse™ dock | £3,999 |
If wireless charging and longer surface runtime matter to you, the AquaSense range's dock-based charging is the more convenient day-to-day experience versus plugging in a cable each time. See the full spec breakdown on our model comparison page.
Why does the bottom of my pool still get dirty a few days after vacuuming?
This is usually a chemistry problem rather than a cleaning-frequency one. If fine debris or a cloudy film reappears within days of a clean, the most common causes are: chlorine or mineral sanitiser levels running low (allowing algae to establish), poor filtration turnover, or organic debris (pollen, dust) settling faster than expected in warm weather. Running your robot more often helps, but it isn't a substitute for testing and balancing your water — a robot removes debris that's already there, it doesn't prevent algae from forming in unbalanced water.
Bottom line
Cordless is now the practical default for UK pools — every model Poolbot sells is battery-powered for exactly this reason. Which one to choose comes down to pool size and how much surface-skimming and charging convenience you want to pay for. Browse the full Beatbot range or check our Buyer's Guide to match a model to your pool.
