A bidet seat, not just an attachment — no plug required
The BioBidet Slim Zero is a full replacement bidet seat that runs on household batteries: a quiet-close lid and seat, a night light and dual nozzles, without an electrical outlet behind the toilet. It suits bathrooms where an attachment would be the only other option — and it needs the same bowl measurement any seat does.
Best for
- Bathrooms with no outlet near the toilet, where you still want a full seat (not just an attachment bolted under one)
- Night-light and gentle-close comfort without wiring work
- Households that want posterior and feminine wash options on a budget
Not ideal for
- Anyone who wants warm water — battery power covers the night light only; the wash is cold-water, like every non-electric model here
- Skirted “type B” toilets unless you request the free fit kit first (see the checklist)
- Buyers who need guaranteed availability right now — check the seat-shape selector above for current status of each option
What the Slim Zero does
The Slim Zero replaces your existing seat. Its night light runs on 4 AA batteries, so nothing about your bathroom’s wiring matters.
- Dual nozzles. Posterior wash plus a feminine front wash.
- Cold-water wash. Connects to the toilet’s supply line; there is no water heating at this price in BioBidet’s range.
- Battery-powered night light. A soft glow for nighttime trips — no fumbling for the light switch.
- Gentle close. Seat and lid lower quietly instead of slamming.
- Slim profile. W 14.3 in x L 19.7 in x H 2.25 in (W 36.3 x L 50 x H 5.7 cm); shipping weight 7 lb / 3.18 kg.
- Fits round and elongated bowls. Two seat-shape versions exist — measure before choosing (checklist below).
Honest trade-offs
- Batteries power the night light, not washing. Water pressure does the washing, exactly like the non-electric attachments.
- No heated seat or warm water. Those require an electric model such as the Slim Three.
- Side lever control. A side lever selects the rear wash, the front wash or off — there is no remote.
Before you order
- Measure your bowl: from the middle of the seat bolt holes to the outer front edge of the bowl. Roughly 18.5 inches is elongated; roughly 16.5 inches is round. Pick the matching seat shape above.
- Bolt spacing and tank gap: BioBidet says under 5.5 or over 7.5 inches between the bolt holes will likely not fit, and it needs at least 1.5 inches between the bolt holes and the tank.
- Skirted or French-curve toilets: if your toilet is skirted type B, contact us before ordering — a fit kit from us is needed at no additional cost. Deep French-curve one-piece bowls and rectangular or specialty shapes leave too little room at the bolts and may not fit; send us your toilet model if you are not sure.
- Seat-shape availability: the elongated and round versions are stocked separately. Use the shape selector above to see which options can be ordered today.
- Water connection: standard toilet supply line with the included T-valve; no power outlet anywhere in the install.
- Batteries: 4 AA batteries (included) run the night light.
How the Slim Zero compares
Slim Zero vs SlimEdge attachment
The SlimEdge bolts under your existing seat: cheapest entry, keeps your current seat. The Slim Zero replaces the seat itself and adds the night light and gentle close. Both wash cold, both install without power.
Slim Zero vs Slim Three (electric)
The Slim Three adds warm water from a built-in tank, a heated seat and a warm-air dryer — but needs an outlet. The Slim Zero is the answer when the outlet does not exist and adding one is not an option.
Round vs elongated
This page carries both shapes as separate options. Measure bolt-hole centre to bowl edge: ~16.5 in is round, ~18.5 in is elongated. If the numbers say one thing and your eye says another, measure twice — seat shape is the most common return reason in this category.
What's included
- Slim Zero bidet seat in your chosen shape (white)
- Mounting hardware and T-valve
- Installation instructions
- 1-year limited warranty from BioBidet
Warranty and support
The Slim Zero carries a 1-year limited warranty from BioBidet against manufacturing defects under normal use, extended to the original purchaser. Bought it from Toiletland? Email us your order number and we will troubleshoot with you first, then handle the warranty claim if needed. Skirted-toilet fit kits are arranged through the same channel at no additional cost.
Frequently asked questions
Does the Slim Zero need electricity?
No. It uses 4 AA batteries (included), which power the night light. The wash itself uses plain water pressure, like every non-electric BioBidet.
Is the water heated?
No — the wash is ambient-temperature cold water. Warm-water washing requires either the hot/cold BB-270 Duo attachment (with a sink line within reach) or an electric seat like the Slim Three.
Elongated or round — which do I need?
Measure from the middle of the seat bolt holes to the outer front edge of the bowl: roughly 18.5 inches means elongated, roughly 16.5 inches means round. Choose the matching shape in the selector above.
My toilet is skirted. Will it fit?
Skirted type B toilets need a free fit kit before installation. Contact us with your toilet model and we will confirm and arrange the kit at no additional cost.
What warranty comes with it?
A 1-year limited warranty from BioBidet covering manufacturing defects under normal use, extended to the original purchaser. Toiletland supports the claim process for products bought here.
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