Building the S1 into a van, RV or boat with a
S1 Dry Flush Sealing Toilet – 12V (No Battery)
$1,500.00 USD
Version
This version of the S1 Dry Flush Sealing Toilet has no internal battery and runs straight off your rig's power. There's nothing to charge and nothing to remember.
Inside, it's the same S1. Solids and liquids stay separate, and one push of a button heat-seals your solids in a bag. No composting, no layering, no blue juice.
How do you power the S1 without a battery?
All it needs is your rig's 12V system. The S1 comes with its own power cable, so you just wire it into your house (leisure) battery with a fuse and you're ready to go.
The sealer pulls a short burst of current when it seals, so cable size matters. If you need to extend the run, use the cable size below for your run length, and fit the fuse as close to the battery as you can.
The battery-free S1 runs on 12V only. It isn't compatible with 24V systems, and it can't be plugged into a household socket. If you want a toilet you can use away from your rig's power, the battery-powered S1 is the one for you.
Your S1 Dry Flush Sealing Toilet, two high barrier liners, and the power cable for wiring into your 12V system.
Patent-pending, because nobody else has figured this out yet.
Not sure your electrical setup is up to it? Get in touch and we'll help you work it out.
- Dimensions: D X W X H: 17.0" x 15.2" x 16.5"
- Solids Container Capacity: 1.5 gallon (5.7 liter)
- Urine Bottle Capacity: 1.7 gallons (6.4 liter)
- LED Urine Level Indicator: An LED light alerts users when the urine bottle is full.
- Material Composition: ABS plastic body, stainless steel hinges, waterproof connectors
- Weight: Approx. 29 lbs (13.2 kg)
- Portability Features: Sturdy side handles for effortless transport
- NOTE: For the most up-to-date information. Please refer to the Manual
Delivery
Free shipping on orders over $150 in USA 48 and Canada.
Canadian orders ship from our 3pl in Canada.
Deliver Time is estimated 3-5 days depending on location. We use UPS ground at standard in USA - No PO Boxes.
Returns
Changed your mind? Send it back unused, in its original packaging, within 30 days for a refund. Return shipping comes out of your refund. We'll send you a prepaid label, so there's nothing to pay up front.
Return Policy
Bamboo Seat Cover
$125.00
External Venting Kit
$125.00
2-Pack S1 Bag Liner Refill
$35.00
Title
Title
Which S1 is right for you?
Go battery-free if the toilet has a permanent home in your build and you have a 12V house system to wire it into.
Go with the battery-powered S1 if you want to move it around, don't have a 12V system, or would rather not wire anything. You get up to 20 seals per charge, and you can top it up on the road with the included 12V Vehicle Charging Kit or optional wall adapter.
Separate
A built-in urine diverter separates liquid waste from solid waste. Less plastic, less $$
Heat Seal
With the push of a button the automatic sealing mechanism hygienically seals solid waste
Hassle Free Disposal
The S1 seals each #2 in a small bag, making it easier to empty whenever you want.
Super Simple
Four steps easy steps.
Common Questions
Straight answers only.
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Traditional dry-flush toilets bag every single use — liquid and solid together. You burn through expensive proprietary refills fast, and you're effectively paying to seal urine in plastic.
The S1 diverts liquid into a separate 1.7-gallon bottle and only seals solids. That's up to 80% less bag use, dramatically lower running costs, and far less plastic waste. It's the first dry-flush toilet with urine diversion built in.
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Each liner roll gives ~25 uses. For 2 people with regular use, that's roughly every 1–2 weeks. Swap takes under a minute — no tools, no mess. Refills are available on CompoCloset.com and Amazon Prime.
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The urine bottle holds 1.7 gallons. For two people you will empty it every 1-2 days. The LED indicator tells you when.
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Good news — you don't need to buy the full S1. The S1 Dry Flush Adapter Kit converts your existing Cuddy or Cuddy Lite into a sealing toilet. Plug-and-play, no permanent modifications required.
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The S1 has a built-in backup mode — it converts to a standard urine-diverting toilet if you run out of bag liners. You're never left without a working toilet.