The car stood in a garage for 15 days. The Connect module quietly loaded the 12V battery. QZ caught the risk before it became a no-start at the worst moment. Result: no morning surprise, no tow, no unnecessary stress.
QZ tells you before a weak 12V battery stops your day. Built for cars that sit, premium vehicles, and businesses where one non-starting vehicle ruins the day.
Get QZ for my car →According to ADAC, in 2025 the 12V battery caused 45.4 % of all roadside breakdowns. Not the engine. Not the gearbox. Not the electronics. The battery.
QZ is built for exactly this moment.
QZ doesn't fix every possible battery failure. It addresses the most important moment: timely warning before a no-start.
Source: ADAC Pannenstatistik 2026 →You turn the key. No response.
Plans stop. Time runs.
This is the moment QZ detects earlier.
First, it spends too much time in a state that harms it.
QZ watches that.
A regular voltmeter shows you a number. QZ tracks whether the battery is spending too long in a state that's destroying it. If it is, you get notified in time — while there's still time to act.
When a battery fails, you don't just pay for the battery. You pay for the entire morning that fell apart.
With a neglected battery, this happens 2–3× more often than with proper care.
Difference over 10 years: not just one extra battery, but 2–3 entire mornings someone gives back to you.
Sources: BCI Battery Technical Manual (Battery Council International), public price lists of authorised dealer service centres in Slovakia (BMW SK, Audi SK, Mercedes-Benz SK) 2026, standard SAA / Slovak Automobile Club roadside-assistance rates 2025, average wage in Slovakia (Statistical Office of the SR Q4/2025). Actual costs depend on vehicle model, region and conditions.
Flooded, EFB, AGM, GEL and LiFePO4 batteries have different risks. QZ distinguishes the battery type and watches what matters for it.
Prolonged time in low state of charge can drive sulfation — hard crystals the battery can no longer break down. Capacity loss is permanent.
QZ watches: voltage trend, time in risk zone, temperature context.
Different chemistry, different rules. LiFePO4 doesn't sulfate, but is sensitive to deep discharge, BMS cutoff and improper charging. It must not be charged below 0 °C.
QZ watches: low state, BMS protection, suitability of charging cycle.
Sources: VARTA Service Manual, Yuasa VRLA Storage Guide, Battery University BU-806 (sulfation), Power-Sonic LiFePO4 Charging Guide, OPTIMA Batteries specifications.
A regular voltmeter shows the voltage. QZ watches the battery's behaviour over time and translates it into one simple action. Four states. Nothing more.
One small device connected to your 12V battery. Mobile network included. Web app on your phone. Notifications only when there's something to do.
Connects to the + and − terminals of the 12V battery. Typical install ~10 minutes. 4G LTE included — no separate monthly fee for connectivity. For hard-to-reach batteries we recommend workshop installation.
You get a push only when there's something actionable. No daily spam, no graphs, no FYI updates.
Web app on your phone (no App Store) shows status and a short explanation — no technical jargon.
Activation walks you through step by step. After that, only alerts when there's something to do.
Weekend, classic, seasonal vehicles. Garaged for weeks at a time.
Luxury and performance vehicles that quietly lose voltage while sitting still. Parasitic drain is higher than you think.
Workshops, rentals, dealerships, delivery, taxi. Online checkout, no sales calls. For 21+ vehicles we start with a pilot.
If you drive 30+ min every day and the battery has never failed — this adds less value for you.
The car stood in a garage for 15 days. The Connect module quietly loaded the 12V battery. QZ caught the risk before it became a no-start at the worst moment. Result: no morning surprise, no tow, no unnecessary stress.
The car stood at the shop with doors open for too long, not on charge. Battery dropped critically low. The mechanic had no idea. QZ warned in time — I called the shop before the battery died completely.
Result: no delay at handover, no jump cables, no apologetic explanation to the customer.
One van doesn't start. Another vehicle is used to jump it. Now both are delayed — and a customer pickup goes south.
QZ should give the fleet manager time to act a day in advance — not deal with chaos at 6 AM.
First sunny day. You want to ride — battery is too low. The day is spent solving the problem instead of driving. QZ tells you a week in advance, while you can still top up calmly.
Single driver, multiple cars, or a small business — buy QZ instantly. Larger fleets start with a pilot.
Up to 20 vehicles: click and pay. Above 20: we start with a pilot to align deployment, billing and accountability.
For larger fleets we need to align deployment, billing and accountability. We set up the pilot on 5 vehicles that sit, drive irregularly or cause morning chaos. After 30 days we evaluate alerts, interventions and real impact.
Morning chaos disappears when you know a day in advance which vehicle will fail.
The customer car in service won't die from a battery. No apologetic handovers.
Demo and stock cars start whenever you need them.
For 1–20 vehicles you don't need to wait for a pilot — buy QZ directly from pricing above (click-and-pay).
123456789. EU B2B reverse-charge is verified via VIES and applied automatically — no Slovak VAT.A single battery problem often costs more than just the battery: tow, delay, workshop, cancelled plan. For premium cars and fleets the real loss is many times the device price.
Get it for my car →