Built & tested in Hungary
Engineered by a team focused on battery safety
Designed and developed in Hungary by a small, focused team working on next-generation lithium battery safety — combining hardware engineering, embedded systems, and applied AI.
Kickstarter — Launching 2026
Your battery starts failing long before it catches fire.
Preion detects invisible warning signs — gas release, heat anomalies, and environmental changes — before smoke, flames, or thermal runaway begin.
Designed, engineered & tested in HungaryActive development · 2026
Live sensor
StableH₂
0.40 ppm
VOC
12 ppb
Temp
23.1°C
Live Project
Current Development Status
Preion is working hardware in active development — not a concept.
Last updated5/7
71%
- Working hardware prototypesDone
- Mobile application operationalDone
- Device pairing & provisioning completeDone
- Cloud connectivity activeDone
- Real-time alerts functionalDone
- AI training & field testing underwayIn progress
- Kickstarter campaign in preparationIn progress
The Core Idea
Smoke is a late-stage warning.
Most fire detectors react to what you can already see. Preion is built to identify danger earlier — by monitoring the invisible chemical and thermal changes that happen inside a failing battery long before visible smoke appears.
Hours
of potential warning before visible smoke
Multi-sensor
gas, heat & environmental analysis
24/7
cloud-connected monitoring
The Science
How a lithium battery fails — and how Preion sees it first
Every battery fire starts quietly, deep inside the cell. Follow the chain reaction from a healthy battery to thermal runaway — and see exactly where Preion steps in.
- 01·The Starting Point
A healthy battery
Inside a healthy lithium-ion cell, lithium ions move freely between the electrodes — protected by a thin, stable SEI layer that keeps the chemistry calm and the battery safe.
- 02·First Charge
The SEI shield forms
During the slow first charge, a protective Solid Electrolyte Interphase builds up on the graphite anode. A strong, uniform SEI is the foundation of a safe, long-lasting battery.
- 03·When Something Goes Wrong
The first invisible warning gases
Damage, aging, overcharging, or impact can crack the SEI. The exposed graphite reacts with the electrolyte, generating heat and releasing the first gases — hydrogen, CO, VOCs — long before any smoke or flame.
- 04·Thermal Runaway
The escalation no one can stop
Once reactions start, they feed on themselves: more heat creates more gas, which creates more heat — racing toward venting, fire, or explosion in a matter of minutes.
- 05·Preion
The early warning you need
Preion detects those earliest escaping gases — long before thermal runaway — and alerts you while there's still time to act, protecting your home, family, and equipment.
By the time you see smoke, it's already too late. Preion watches the chemistry, not the flames.
Technology
Early detection of lithium battery failures
Preion combines hardware, AI, and cloud connectivity to identify failure precursors that traditional smoke and heat detectors miss entirely.
Hydrogen & VOC detection
Dedicated sensors continuously scan for hydrogen and volatile organic compound signatures released during the earliest stage of cell failure — long before smoke or flame.
Multi-sensor AI analysis
Our model fuses hydrogen, VOC, humidity, and thermal data in real time to distinguish normal off-gassing from a genuine thermal runaway precursor.
Rapid heat-rise detection
Onboard thermal sensors track temperature gradients and rate-of-rise so that abnormal heating patterns trigger an alert minutes before a critical event.
Cloud-connected alerts
Detected anomalies are escalated through push notifications, SMS, and automated voice calls — so the right person is reached, day or night.
Redundant connectivity
Dual Wi-Fi and a built-in IoT SIM keep the device online and reporting even if your home network goes down.
Live mobile dashboard
Check device status, sensor readings, and alert history for every Preion unit from a single intuitive mobile app.
How It Works
Four steps. One quiet device watching your batteries.
Preion sits near where your batteries charge and operate. From there, it does the work in the background.
- Step 01
Monitor
Preion continuously monitors the environment around charging lithium batteries — gas composition, temperature, and humidity.
- Step 02
Detect
The system watches for early gas release, rapid temperature rise, and abnormal environmental patterns associated with cell failure.
- Step 03
Analyze
Our AI evaluates the combined sensor pattern in real time to identify whether the readings indicate a genuine battery failure precursor.
- Step 04
Alert
You receive immediate, escalating alerts — before smoke or fire may occur — so you can act while there is still time.
Preion in real life
Set it down where your scooter charges.
No wiring and no installation. Just place Preion next to your e-scooter, e-bike, or battery while it charges — it starts watching the air and heat around the cells the moment it powers on.
- Zero installationNo tools, no rewiring — unbox it and switch it on.
- Place it anywhereOn the deck, on a shelf, or beside the charger — wherever your battery rests.
- Guards while chargingCharging is when most failures begin, so that's exactly when Preion watches closest.
Built for everyday batteries
Designed for modern battery homes
E-bikes, scooters, power tools, home batteries, and portable power stations are becoming part of everyday life. Preion was designed for the places where these batteries charge, rest, and operate.
E-bikes & scooters
Power tools & chargers
Home energy storage
Portable power stations
Garages & charging rooms
Workshops & small businesses
Alerting
Multi-layer alerts when seconds matter
When a precursor event is detected, Preion does not rely on a single notification channel. Alerts escalate automatically until they are acknowledged.
01
Push notifications
Instant in-app push to every paired phone.
02
SMS text messages
Sent to all registered numbers for redundancy.
03
Automated voice calls
Phone-call escalation if alerts go unacknowledged.
04
Cloud monitoring
Continuous device health & event logging in the cloud.
Escalation path:Push notificationsSMS text messagesAutomated voice callsCloud monitoring
Launching on Kickstarter
Get alerted early. Stay ahead of battery trouble.
Preion detects early warning signs of lithium-ion battery trouble before smoke or flames appear — and sends the alert straight to your phone, so you can act while there's still time.
- App alertsInstant push notifications the moment something looks wrong.
- Device statusCheck every connected Preion and its live readings anytime.
- 24/7 monitoringAlways on guard while your batteries charge — wherever you are.
Kickstarter · Safer e-scooter charging
Protect the lives that matter.
Lithium-ion battery fires can escalate in seconds. Preion detects the early warning signs of e-scooter battery trouble — gas release, heat anomalies, and environmental changes — before smoke or flames ever appear.
- Early warningDetects warning signs before smoke or flames appear.
- Instant app alertsReal-time notifications sent straight to your phone.
- 24/7 peace of mindAlways on guard while your scooter charges — at home, in flats, and workshops.
Launching on Kickstarter
Everything you need, in one box.
Preion arrives ready to protect — no extra parts to buy. Unbox it, power it on, pair the app, and place it next to your batteries. Protection starts in minutes.
- Preion monitoring deviceThe multi-sensor unit that watches for early battery-failure signs.
- USB charging cablePower it from any standard USB port or adapter.
- Quick start guideUp and running in a few simple steps.
- Companion mobile appPair, monitor, and receive real-time alerts on your phone.
Why this matters now
Lithium batteries are everywhere.
E-bikes, scooters, power stations, tools, and home energy storage systems are rapidly becoming part of daily life. As battery density increases, early detection becomes increasingly important.
Rapid growth
of high-density lithium battery use in homes
Higher density
means faster, more energetic failures
Early detection
is the most effective response
Honest by design
Not a smoke detector replacement.
Preion is designed as an additional early-warning layer specifically for lithium battery failures. Keep your smoke detectors — Preion is built to alert you before they ever need to.
Applications
Versatile protection across industries
From a single garage to gigawatt-scale storage — the same monitoring principles, scaled to your environment.
Home energy storage
EV charging stations
Data centers & UPS
Gigafactories & manufacturing
Warehousing & logistics
E-mobility fleets (bikes, scooters)
From Our Blog
Stay informed with the latest insights on battery safety, technology updates, and industry news.
Jun 14, 2026
Thermal Runaway Precursor Detection Explained
Thermal runaway precursor detection identifies gas, heat, and humidity changes before smoke or fire, giving earlier warning for lithium battery failure.
Read more
Jun 14, 2026
Battery Safety Monitor for Home: What Matters
A battery safety monitor for home can detect lithium battery failure before smoke or flames, giving earlier warning and more time to act.
Read more
Team
Meet the people behind Preion
A small team of engineers and operators dedicated to making lithium battery use safer in everyday environments.
P
Péter Varsányi
CEO & Co-founder
An experienced entrepreneur with a background in electronics and a passion for solving real-world problems. Péter leads the company's vision and strategy.
B
Balázs Bálint
CTO & Co-founder
Hardware and software engineer behind the Preion system, with deep expertise in sensor technology and embedded systems.
R
Ryan Coleman
Brand Ambassador
An advocate for battery safety and sustainable technology, helping share Preion's mission with a global audience.
FAQ