Volt Dropper
Volt Booster
Double Adapter
Replenisher
Volt Mini
Volt Rapid
Black Friday 2026 · United Kingdom · our only deal this BFCM
50% off
every bundle.
All six. Half price.
Ends Monday 30 Nov
Final hours. Ends in
00days
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4.9 from 1,723 reviews30-day returns2-year warranty
Pick your bundle.
Every one is half price. The badge tells you who each one suits. Choose your battery brand on the bundle page.
Which bundle is right for you?
Every bundle comes in your battery brand. Pick the one that runs what you need.
| Feature |  Black Friday BundleMost popular · Founder's choice |  Max BundleComplete kit · best value |  Replenisher BundleBest small kit |  Accessories BundleAlready own a Dropper? |  Starlink BundleNewest bundle |
|---|---|---|---|---|---|
| Runs 12V (fridge, lights, pumps) | Yes | Yes | Yes | Optional | No |
| Runs 240V (240V appliances) | No | Yes | No | No | No |
| USB-C laptop and Starlink power | No | Yes | No | Optional | Yes |
| Double battery runtime | Yes | Yes | No | Yes | No |
| Recharge batteries in the car | Yes | Yes | Yes | Yes | No |
| Black Friday price | £131.99 | £184.99 | £105.99 | £92.99 | £105.99 |
| Buy | Get this one | Get this one | Get this one | Get this one | Get this one |
Every bundle comes in Makita, Milwaukee, DeWalt, Ryobi, Ozito, Bosch, AEG and more. Not sure which batteries they run? Check the compatibility guide or send us a photo.
Out there with our customers
Real customers, real trips. Follow along.
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Will it run your gear?
Runtime calculator
Step 1 - Choose your product
Will it run your gear?
Runtime calculator
⚡ The Volt Dropper
18V → 12V · 10A max · Adjustable 5–13V
1 What are you running?
2 The details
−20°C - freeze+20°C - ambient
3 Your tool batteries
4 Conditions
-
Tips to extend your fridge runtime
- Keep the lid closed - decide what you're grabbing before you open it.
- Keep it in the shade and off hot metal trays - direct sun makes the compressor work overtime.
- Give the compressor vents airflow - don't bury it under swags and bags.
- Pre-cool on 240V at home and load it with already-cold food & drinks.
- An insulating cover helps on scorchers - so does cracking it open less at midday.
How we calculate it - check our maths
A guide only - real runtime depends on your exact gear, battery health and weather.
Will it run your gear?
Runtime calculator
⚡ The Volt Booster
240V · 180W max · Pure sine wave
1 What are you running?
2 Good to know
3 Your tool batteries
-
How we calculate it - check our maths
A guide only - real runtime depends on your exact gear, battery health and load.
How long to top up?
Charge-time calculator
⚡ The Volt Replenisher
12V/24V in · 18–21V · 2A charge
1 Your battery size
2 Starting charge
3 How many batteries?
Charges one battery at a time - multiple packs charge one after another.
-
How we calculate it - check our maths
A guide only - real charge time depends on battery condition, temperature and your vehicle’s output.
Power both ways
Power & charge calculator
⚡ The Volt Rapid
100W USB-C PD · in & out
1 Are you charging or discharging?
2 Your tool battery size
3 What are you powering?
3 Your USB-C charger
-
How we calculate it - check our maths
A guide only - real figures depend on your device, charger, battery health and temperature. The Rapid powers or charges one direction at a time.
Do the maths
See your runtime double
⚡ Double Battery Adapter
two 18V packs · parallel · with your Volt Dropper
1 Your battery size (each pack)
2 What are you running (via the Dropper)?
1 battery-
→
2 batteries-
How we calculate it - check our maths
A guide only - runtime depends on your exact gear, battery health and conditions. Always pair two matching packs.
How much can you charge?
Charge calculator
⚡ The Volt Mini
18W · USB-C PD + USB-A QC
1 Your tool battery size
2 What are you charging?
-
How we calculate it - check our maths
A guide only - real numbers vary with device battery size, charge level and your battery’s health.
What customers say about the kit
4.9
1,250 verified reviews of the products in this kit
Order during the sale and it is under the tree before Christmas.Every order is tracked. VAT and duties paid.
VAT and duties paidThe price you see is the price you pay. No customs charges or handling fees at your door.
2-year Volt warrantySale or not, same cover
30-day returnsChange your mind, send it back
Real peopleSend a photo of the battery, we confirm the fit
Black Friday questions
Will it fit my batteries?
Every bundle comes brand-matched: Makita, Milwaukee, DeWalt, Ryobi, Ozito, Bosch, AEG and more. You pick the brand on the bundle page and only the right fit goes in the cart. Not sure? Check the compatibility guide or send us a photo of the battery.
How long will it run my fridge?
A 5Ah 18V battery runs a 40L compressor fridge for roughly a night; two batteries on the Double Adapter doubles that. Run your own numbers in the runtime calculator.
Will it arrive before Christmas?
Yes. Order during the sale and it is there before Christmas. Every order is tracked.
Do I need a code?
No. Every bundle is already half price on the site and at checkout until Monday 30 Nov.
Is anything else on sale?
No. The bundles are our only deal for all of Black Friday and Cyber Monday. Single products stay at their normal price, so the bundle is the way to get the kit for less.
Returns and warranty?
30-day returns and the 2-year Volt warranty apply to every bundle, sale or not.