The smartest way to stay warm off-grid is not a bigger heater, it is heating the person instead of the air. A 12V electric blanket drawing about 50W does more for comfort per watt than any air heater and runs off your house battery all night. This guide covers the best 12V heated accessories for caravans in 2026, from the standout KickAss blanket to heated chairs and budget wearables.
Heat the Person, Not the Air
Here is the off-grid secret weapon most people miss. When you are free camping with no mains power, warming a whole caravan full of cold air is the expensive way to be comfortable. A diesel or gas heater is worth having when the mercury really drops, but for a lot of cold nights you do not need to heat the air at all. You need to heat the one thing that feels the cold, which is you.
A 12V electric blanket draws around 50W. Put that next to a 2,000W electric fan heater and the maths is not close. The blanket sips roughly 4 amps off your house battery, so it will run all night on a modest lithium setup with a bit of solar to catch up the next day. The fan heater would flatten the same battery bank in under an hour, which is why electric heaters are really a powered-site item. Heated accessories are the opposite: they are built for exactly the nights when you have no power to spare.
This is why every experienced big lapper we know carries a 12V blanket, even the ones with a diesel heater fitted. On a mild-to-cold night you skip firing the heater entirely, throw the blanket on the bed twenty minutes before you turn in, and climb into a warm one. The heater stays off, your fuel and your battery stay full, and you sleep better for it. For the price of a tank of diesel it genuinely changes how you camp in the cold.
Switch a 12V blanket on for fifteen to twenty minutes before bed, then knock it back to the lowest setting or off once you are under the covers. The bed holds the warmth and you save even that small draw overnight.
What to Look For When Buying
Heated gear is simple, but there are a few things that separate a piece you will use every night from one that annoys you or drains the battery. Here is what actually matters.
- Voltage match: buy gear that runs on the voltage you have. A true 12V (or 12V/24V) blanket plugs straight into a cigarette socket or an Anderson plug and runs direct off the battery. Do not buy a 240V household blanket and run it through an inverter, you throw away power in the conversion for no reason.
- Low draw: a good 12V blanket pulls around 40 to 55W, or roughly 3 to 4.5 amps. That is the whole point. Anything much higher and you have lost the off-grid advantage.
- Auto-timer and thermostat cut-off: a 45, 90 or 120 minute timer stops the blanket draining the battery if you fall asleep with it on, and a thermostat cut-off (around 65 degrees) stops it overheating. Both are safety and battery features worth insisting on.
- Washable, detachable controller: you will spill on it and the dog will lie on it. A controller that unclips so the blanket goes in the machine is the difference between a season and years of use.
- USB vs 12V for wearables: blankets want a hardwired 12V feed for all-night use. Wearables like hand warmers, heated vests and heated throws are better on USB, so they top up off the same power bank or USB point you already run for phones and charge on the move.
Our Top Picks for 2026
We have sorted through the 12V and battery heated gear worth buying in Australia. Here are the picks, from the one everyone should own to the budget wearables for transit days.
✔ Pros
- Tiny 4.2A draw, runs all night off battery
- Timer and 65 degree auto shut-off
- Detachable, machine-washable controller
- Runs on 12V or 24V, 8A fused
✗ Cons
- Single-blanket size, not a full double
- Polyester feel rather than cotton
✔ Pros
- Heated seat and back, three settings
- Sturdy 200kg-rated chair on its own
- Strong owner reviews
✗ Cons
- Power bank not included, not hardwired
- Premium price for a camp chair
✔ Pros
- Wanderer is larger for more bed coverage
- Drifta is a premium, well-built AU design
- Both run direct off 12V
✗ Cons
- Neither beats the KickAss on value
- Drifta costs roughly double the Best Pick
✔ Pros
- Cheap and portable
- Charge off your existing USB setup
- Hand warmers double as power banks
- Great for kids, drivers and early starts
✗ Cons
- Finite runtime between charges
- Not a substitute for a bed blanket
Quick Comparison Table
Here is how the picks stack up side by side.
| Product | Price | Power | Draw | Best For |
|---|---|---|---|---|
| KickAss 12V/24V Blanket Pick | ~$49.95 | 12V/24V | 50W / 4.2A | Everyone, all-night off-grid warmth |
| KickAss Heated Chair | ~$149.95 | USB power bank | Low | Evenings around the fire |
| Wanderer 12V Blanket | ~$49 to $69 | 12V | Low | Larger bed coverage |
| Drifta Stockton 12V Blanket | ~$89 to $99 | 12V | Low | Premium AU-designed build |
| USB Warmers & Throws Budget | ~$20 to $70 | USB | Very low | Transit days, kids, early starts |
How to Run Them Off 12V
The golden rule with heated accessories is to run them direct off 12V, not through an inverter. It is tempting to plug a 240V household electric blanket into an inverter and call it done, but you lose a chunk of power in the DC-to-AC conversion and you gain nothing. A purpose-built 12V blanket plugs straight into a cigarette socket, and the better move for a permanent setup is to wire it to an Anderson plug or a fused 12V outlet near the bed so there is no adaptor to knock loose in the night.
Draw is the number that matters when you are camping without power. A 50W blanket at around 4 amps is nothing to a lithium house battery, and even a night on the highest setting barely dents your capacity, especially if you have solar to top up the next day. This is exactly why heated gear shines off-grid where a mains electric heater is useless. If you want the full picture on sizing batteries, solar and inverters for life without power, our heating and cooling pillar guide ties it all together.
Never fold or bunch a heated blanket while it is running, and never leave one on unattended without its timer set. Bunched heating elements can create a hot spot. Lay it flat, use the auto-timer, and unplug it when you are up for the day.
None of this replaces a proper heater when the cold is serious. When you are parked up in the alpine country or a Red Centre winter night dips below zero, you will still want a diesel heater doing the heavy lifting on the air temperature. Heated accessories are the efficient companion to that, not a replacement for it, and for the majority of mild-to-cold nights they let you leave the heater off entirely.
Frequently Asked Questions
Will a 12V electric blanket flatten my battery overnight?
No. At about 50W it draws roughly 4 amps, so a full night on the highest setting uses a small fraction of a modest lithium bank. Set the timer, drop it to a low setting once you are warm, and your solar will easily replace what you used the next day.
Can I run a normal household electric blanket off an inverter instead?
You can, but do not. A 240V blanket run through an inverter wastes power in the conversion and a household unit draws far more than a purpose-built 12V one. Buy a 12V or 12V/24V blanket and run it direct off the battery.
Do I still need a diesel or gas heater if I have heated gear?
For serious cold, yes. Heated accessories warm you, not the van, so on a sub-zero alpine night you still want a heater lifting the air temperature. But for a lot of mild-to-cold nights a 12V blanket lets you skip the heater completely, which saves fuel and battery.
Are 12V heated blankets safe to sleep under?
The good ones are, provided they have a thermostat cut-off and an auto-timer, which the KickAss does at 65 degrees. Lay the blanket flat rather than bunched, set the timer, and treat it like any electrical item near the bed.
- Heating the person beats heating the air off-grid: a 50W blanket does more per watt than any air heater.
- The KickAss 12V/24V Electric Blanket is the standout buy at around $50, and every big lapper should own one.
- Run heated gear direct off 12V, never through an inverter, and insist on a timer and thermostat cut-off.
- The heated chair suits evenings outside; USB hand warmers and throws cover transit days, kids and early starts.
- None of it replaces a diesel heater in serious cold, but it lets you leave the heater off on most nights.
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