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Mr Swagman
DeWalt-Compatible Volt Step Down PRO – 18V to 12V Power Supply
Pickup currently not available
Clip this onto a DeWalt 18V XR battery and you have 12V power at camp: 15A for a fridge through the Anderson plug, a 12V socket for lights, fans or a pump, and 65W USB-C for a laptop, phone or Starlink Mini. At night it charges phones and runs a 12V light or fan for the swag without starting the car.
Outputs
- 12V Anderson plug, 15A continuous (about 20A peak for roughly 8 minutes)
- 12V cigarette socket, 10A
- USB-C PD3.0, up to 65W
- USB-A, 5V 2.4A
Fridge runtime
At temperature, a 12V fridge draws about 1 amp on average, so a 12Ah battery gives roughly 12 hours. Pre-cool the fridge first; hot weather shortens runtime.
Before you buy
- Fits DeWalt 18V XR slide-on batteries. Battery not included.
- Low-voltage, over-current and short-circuit protection built in.
- Don't use dual-battery adaptors, and never combine two batteries at different charge levels. Both can damage the batteries.
- For lights, fans and smaller loads, the 18V to 12V Power Supply is a lighter-duty option.
Charge and connect
- DeWalt-Compatible Volt Step Down PRO + Auto Charger Bundle
- DeWalt-Compatible Auto Charger – 12/24V In-Car Battery Charger
- USB-C to 20V DC Cable for Starlink Mini
Specifications
- Input: 18–21V (DeWalt 18V XR battery)
- Outputs: 12V Anderson 15A; 12V cigarette socket 10A; USB-C PD3.0 65W; USB-A 5V 2.4A
- Maximum: 15A continuous, about 20A peak for roughly 8 minutes
- Protection: low voltage, over-current, short circuit
- Battery: not included
DeWalt is a trade mark of its owner. This is an aftermarket product, compatible with DeWalt 18V XR batteries but not made, approved or endorsed by DeWalt.
Get more from it
Pairs with Starlink Mini
Run a Starlink Mini off USB-C with our USB-C to DC cable while the Anderson plug powers the fridge.
Swap, don't stop
Carry a second charged battery and swap it in when the first runs low.
Charge on the drive
Top up batteries between camps with an in-car Auto Charger, or get both in the PRO + Auto Charger Bundle.
Pairs well with
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Frequently asked questions
Does it come with a battery?
No. It fits the DeWalt 18V XR batteries you already own. A bigger battery (higher Ah) runs your gear for longer.
How long will it run a 12V fridge?
At temperature, a 12V fridge draws about 1 amp on average, so a 12Ah battery gives roughly 12 hours, and a 5Ah battery about 5 hours. Pre-cool the fridge first; hot weather shortens runtime.
Can I run more than one thing at once?
Yes. The Anderson plug, 12V socket and both USB ports work together, up to 15A in total (about 20A for short peaks of roughly 8 minutes).
How are Off-Grid Power products delivered?
They're sent from our Australian warehouse partner, separately from our swags and awnings, so if you order both you'll receive more than one parcel.
- Shipping is free within Australia when your Off-Grid Power products total over $200. Below that, shipping is calculated at checkout.
- Orders placed before midday on a business day are usually dispatched the same day; later orders go the next business day.
- Most deliveries arrive within 1 to 6 business days of dispatch. Regional and remote areas can take longer.
- You'll get tracking details by email once your order is on its way.
Off-Grid Power products can't be picked up from our Marcoola store.
Can I return an Off-Grid Power product if I change my mind?
Yes, within 30 days of delivery.
- It must be unused, in its original condition and packaging, with proof of purchase.
- Contact us first. We'll give you the return address, which is different from our Marcoola store. Items sent back without approval may not be accepted.
- You pay the return freight, and the original shipping cost isn't refunded.
- A 5% restocking fee is deducted from your refund.
We don't do direct exchanges: return the item and place a new order for the one you want.
What if it arrives faulty or damaged?
Check your order when it arrives. If anything is faulty, damaged or not what you ordered, stop using it and contact us within 14 days of delivery with your order number and photos.
Off-Grid Power products are covered by the consumer guarantees under the Australian Consumer Law. Where a fault is confirmed, we'll arrange a repair, replacement or refund and cover the reasonable return freight. Our 12-month Mr Swagman warranty covers our own camping gear, not the Off-Grid Power range.