Battery-Free NFC Smart Lock Cylinder Factory
Battery-Free NFC Self-Storage Cylinder Lock for Storage Unit Doors
Drops into any standard 19mm/22mm storage unit cutout. Unlocked by smartphone NFC. No batteries inside the lock — ever.
Built to replace the traditional tubular cylinder locks used on roll-up self-storage doors without changing the door, the bezel, or the way tenants already think about access. Tap a phone to unlock. Manage permissions from the cloud. Skip the keys, the battery swaps, and the "facility-only" lock markups.
Engineered for the Realities of Roll-Up Self-Storage Unit Doors
This NFC cylinder lock is developed for self-storage unit doors that use a dedicated cylinder locking position. It is intended for projects that want to upgrade traditional storage door locks to a more manageable keyless option
Weather-Sealed for Outdoor Bezels
IP65-rated against rain, dust, and freeze conditions. No more WD-40 trips in winter.
Drop-In 19mm Standard Fit
Slides into the same bezel as Chateau, Master Lock, and Public Storage cylinder locks.
One-Hand Tap Operation
Tap your phone with one hand while the other holds up the door — no fumbling with thin keys.
No Tubular Key to Snap
Skip the self-storage frustration: snapped tubular keys stuck inside the lock.
Why Self-Storage Uses Cylinder Locks Instead of Padlocks.
Walk into any self-storage facility, and you'll see cylinder locks — not padlocks — on the doors. There's a reason: disc and padlocks have exposed shackles that bolt cutters can defeat in seconds. Cylinder locks recess into the door itself, leaving nothing to cut, pry, or grip.
Of course, it's not absolute. Some storage units — older sheds, wooden barn-style doors, or units with external hasps — are still better matched to a disc padlock. But for the standard roll-up steel door that dominates modern self-storage, the cylinder is what the industry has converged on.
Why It Matters
That's why every major storage operator — Public Storage, Extra Space, CubeSmart, U-Haul — standardizes on cylinder lock bezels. KENRONE NFC cylinder locks fit those same bezels, with one upgrade: no key required.
Cylinder Lock
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No shackle to attack
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Recessed into door
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Flush, weather-sealed
Padlock / Disc Lock
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Bolt-cutter vulnerable
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Easy to pry open
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Hangs awkwardly
A Keyless Upgrade from Traditional Storage Cylinder Locks
Most "smart locks" for self-storage require installing an entirely new locking system on the door — wiring, brackets, sometimes even cutting a new opening. KENRONE NFC cylinders take a different path: they drop into the bezel you already have.
Pull out the old mechanical cylinder. Slide in the KENRONE NFC cylinder. Tap your phone. That's the entire installation.
Before → 30 Seconds Later
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Old mechanical → KENRONE NFC cylinder
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Cylinder + tubular → Installed in same bezel
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Keychain → Phone-Tap unlocking
No Battery Inside the Lock. Ever.
Battery-powered smart locks have one fatal flaw in self-storage: doors that sit untouched for months drain batteries silently. When a tenant finally shows up, the lock is dead — and they're calling the facility manager at 9 PM.
KENRONE NFC cylinders solve this at the physics level: the smartphone's NFC field powers the lock the moment the phone touches it. The lock has no battery to drain, replace, or fail.
Compared to Standard Storage Padlocks and Mechanical Cylinders.
Three lock types dominate self-storage today. Here's how they stack up against KENRONE NFC cylinders.
Comparison | Storage Padlock | NFC Disc Lock | Mechanical Cylinder Lock | KENRONE NFC Cylinder |
|---|---|---|---|---|
Cut/Pry Resistance | Weak (exposed shackle) | Medium | Strong (recessed) | Strong (recessed) |
Unlocking Method | Key | Smartphone NFC Tap | Tubular Key | Smartphone NFC Tap |
Key Loss Risk | High | None (no keys exist) | High (keys snap easily) | None (no keys exist) |
Battery Required | None | None inside the lock | None | None inside the lock |
Multi-Tenant Management | Manual | Cloud-based access control | Manual | Cloud-based access control |
Access Logging | None | Full cloud audit trail | None | Full cloud audit trail |
Weather Sealing | Poor | IP65 sealed | Medium | IP65 sealed |
Typical Cost (per unit) | $10-15 | B2B pricing on request | $12-22 | B2B pricing on request |
Best For | Casual outdoor use | Smart-managed storage facilities & power tenants | Standard storage units | Smart-managed storage facilities & power tenants |
Different door, same technology. If your storage units use disc padlocks instead of cylinders, KENRONE NFC Disc Padlocks deliver the same battery-free, phone-unlock experience. Need a different padlock style — shackle, weatherproof, or custom? Talk to our team and we'll spec the right hardware for your facility.
Built for the Way Modern Self-Storage Actually Operates
For Facility Operators
Equip your entire facility with NFC cylinders. Tenants get instant digital keys at move-in. You get remote overlock capability, real-time access logs, and zero key inventory to manage.
Ideal for: Unmanned facilities, multi-location operators, facilities undergoing digital transformation.
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For Tenants (Long-Term Renters)
Avoid the $22 "facility-only" lock markup. KENRONE NFC cylinders fit 99% of standard 19mm/22mm bezels — so you can bring your own smart lock, track every access on your phone, and never lose a key again.
Ideal for: Long-term renters, business storage users, multi-unit renters.
Size and Compatibility Matter Before Replacement
Before selecting a replacement cylinder, it is important to confirm the required size and door compatibility. Length, internal and external dimensions, and the existing installation format all affect whether the new cylinder will fit properly and work as expected.
Contact us for more sizes and customization needs
Technical Specifications
Mechanical Specs | Smart Specs |
|---|---|
Bezel Compatibility: 22mm | Authentication: NFC (ISO 14443-A) |
Cylinder Body: Hardened zinc alloy | Encryption: AES-256 dynamic credentials |
Operating Temp: -25°C to +70°C | Power Source: Passive (smartphone NFC field) |
Ingress Protection: IP65 (dust + water resistant) | Battery: None — zero inside the lock |
Mechanical : None | Compatible Devices: All NFC-enabled iOS & Android phones |
Weight: ~85g | Unlock Response Time: <0.5 seconds |
Anti-Tamper: Hardened anti-drill pins | Cloud Platform: KENRONE Cloud (REST API available) |
Certifications: CE, RoHS, FCC | Audit Log: Real-time access events stored 24 months |
Frequently asked questions
More NFC Battery-free Smart Lock Products
Built by a Lock Maker,
Not a Tech Startup
Since 2002, KENRONE has built mechanical, electronic, and now battery-free NFC locks for commercial projects in 100+ countries. We don't just assemble locks — we engineer them, from circuit board to cam mechanism, all under one roof.
From mechanical locks in 2002 to NFC battery-free cam locks today — we've evolved with every shift in the industry.
23 Years in Locking
We build the complete NFC ecosystem — from battery-free hardware to cloud management — engineered to work together.
Systems, Not Just Locks
Complete control from circuit design to final QC — no third-party assembly, no surprise quality drift.
Fully In-House Manufacturing
Tested in the conditions our locks will actually face — extreme temperatures, heavy use, outdoor exposure, contractor rotation.
Built for the Field, Not the Lab