What is TopAuto AZU 108 and what is it for?

Charger TopAuto AZU 108 is a compact but powerful device for restoring and maintaining the charge of car batteries. Unlike budget "chargers" with manual adjustment, this model is equipped automatic control, which makes it safe even for beginners. The device is suitable for 12V and 24V batteries, including popular lead-acid, AGM and gel batteries.

Main advantage AZU 108 — multi-stage charging with desulfation function. This means that the device does not simply “pump” the battery with current, but restores its capacity by removing lead sulfates from the plates. This is especially true for batteries that have been idle for a long time without recharging. For example, if the car was parked in the garage in winter without starting, TopAuto AZU 108 will help revive the battery without the risk of overheating or overcharging.

Important: the device is not intended for lithium (Li-ion) batteries! Attempting to charge such a battery may result in fire or explosion due to incompatible charging algorithms. Always check the battery type before connecting.

Technical specifications: what does the box hide?

The manufacturer declares the following parameters for TopAuto AZU 108:

  • 🔋 Voltage: 12V/24V (automatic detection)
  • ⚡ Maximum current: up to 8A (adjustable)
  • 🔄 Operating modes: charging, desulfation, maintenance, battery test
  • 📊 Battery types: WET, MF, Ca/Ca, AGM, GEL
  • 🛡️ Protection: from short circuit, polarity reversal, overheating
  • 🌡️ Temperature range: from -20°C to +50°C

However, in real conditions it is important to take into account the nuances. For example, maximum current 8A suitable for batteries with a capacity of 40Ah up to 120Ah. Less for batteries 40Ah (for example, motorcycle) it is better to use no more current 2–4Ato avoid overload. And for truck batteries with a capacity 180Ah+ you will need a device with current from 10A.

Parameter Meaning Note
Input voltage 220V ±10% Operates from a standard outlet
Output current (12V) 0.8A – 8A Adjustable with buttons +/–
Full charge time 8–12 hours Depends on the degree of battery discharge
Dimensions 180×120×60 mm Compact housing with ventilation holes
Weight 1.2 kg Convenient for transportation

Please note: included with AZU 108 There are only crocodile clips and a network cable. For connection to batteries with non-standard terminals (for example, T19 or T4) you will need adapters that are purchased separately.

📊 What type of battery are you using?
Lead Acid (WET)
AGM
GEL
Calcium (Ca/Ca)
I don't know

Step-by-step instructions: how to properly charge the battery?

Before first use TopAuto AZU 108 Please read the instructions carefully - connection errors can damage both the device itself and the battery. Here is a proven algorithm:

  1. Battery preparation:
    • 🔧 Remove the battery from the car or disconnect the terminals (first "–", then "+").
    • 🧹 Clean the terminals from oxides (use sandpaper or a special brush).
    • 🌡️ Check the battery temperature - it should be in the range +5°C…+30°C.
  2. Charger connection:
    • ⚡ Connect "+"clamp to"+"Battery,"–"to"–".
    • 🔌 Turn it on AZU 108 to the network. The display will show the battery voltage.
  3. Mode setting:
    • 📊 Click MODEto select the battery type (WET, AGM etc.).
    • ⚡ Set the charging current (optimally - 10% of battery capacity).
  • Starting the process:
    • ▶️ Click START. The device will automatically detect the level of discharge and begin charging.

    Average full charge time - 10–12 hours. If the battery is very discharged (voltage below 10.5V), AZU 108 will first restore it in mode precharging (current 0.8A), and then moves on to the main loop.

    Have the terminals been removed from the battery (if charging by car)|

    Are the contacts clean from oxides?

    Is the voltage selected correctly (12V/24V)|

    Does the charging current match the battery capacity-->

    ⚠️ Attention: Never connect the charger to the battery if it is installed in a car with the ignition on! A power surge can damage on-board electronics, especially control units (ECU, BCM).

    Comparison with analogues: why AZU 108 better (or worse)?

    There are dozens of chargers on the market in a similar price range (3 000–5 000 ₽). To understand whether it is worth choosing TopAuto AZU 108, compare it with popular competitors:

    Model TopAuto AZU 108 Vympel-55 Orius B6 Ctek MXS 5.0
    Max. current (12V) 8A 6A 6A 5A
    Desulfation ✅ Yes ❌ No ✅ Yes ✅ Yes
    Automatic shutdown ✅ Yes ✅ Yes ❌ No ✅ Yes
    AGM/GEL support ✅ Yes ❌ No ✅ Yes ✅ Yes
    Price (average market) ~4 200 ₽ ~3 500 ₽ ~4 800 ₽ ~6 000 ₽

    Pros AZU 108:

    • 🔹 Higher current (8A) compared to most analogues.
    • 🔹 Support for modern battery types (AGM, GEL).
    • 🔹 Built-in fan for cooling (important for long-term work).

    Cons:

    • 🔸 No function regeneration of deeply discharged batteries (unlike Ctek).
    • 🔸 Short network cable (1.5 m), an extension cord may be required.
    • 🔸 The plastic body is less durable than Vympel-55 (metal).

    If you need a device for regular maintenance batteries (for example, in a car service), it is better to consider Ctek MXS 5.0 - Despite the higher price, it offers advanced diagnostic functions. For home use AZU 108 — optimal balance of price and capabilities.

    💡

    If you often charge batteries of different capacities, choose a model with settings memory (for example, Orius B6). This will save time setting the current for each battery.

    Typical faults and repair methods

    Like any electronic device, TopAuto AZU 108 may fail. Let's look at the most common problems and their solutions:

    1. The device does not turn on

    Possible reasons:

    • 🔌 The fuse has blown (located inside the case, next to the network connector).
    • 🔋 The network cable or plug is faulty.
    • 📉 Power surge in the network (check the outlet with a multimeter).

    Solution: Replace the fuse with a similar one (the rating is indicated on the housing). If the problem is in the cable, you can resolder it or buy a new one (suitable for many chargers TopAuto).

    2. Does not detect battery voltage

    If "00.0V" or "ERR":

    • 🔧 Check the polarity of the connection (reversal of polarity is possible).
    • 🧲 Clean the battery terminals and device clamps from oxides.
    • 🔋 Make sure the battery is not “dead” (voltage below 2B).

    Solution: If the battery is discharged to zero, try “boosting” it with another charger with manual current control (for example, Vympel-27).

    3. The case overheats

    Normal operating temperature AZU 108 - up to +60°C. If the case is hot (you cannot hold your hand):

    • 🌬️ Check if the ventilation holes are clogged.
    • ⚡ Reduce charging current (maximum 8A only for batteries from 80Ah).
    • 🔌 Connect the device through a voltage stabilizer (if there are frequent surges in the network).
    ⚠️ Attention: If after 30 minutes of operation the device turns off with the error "OVER HEAT", this may indicate a malfunction of the internal temperature sensor. In this case, it is better to entrust the repair to a service center - replacing the sensor yourself requires soldering SMD components.
    How to disassemble the AZU 108 case?

    1. Unscrew the 4 screws on the back panel (a Phillips screwdriver is required).

    2. Carefully remove the top cover - there is a board with a heatsink inside.

    3. Do not touch the board components without an antistatic wrist strap!

    4. To replace the fuse or fan, complete disassembly is not required - they are accessible after removing the bottom cover.

    Owner reviews: truth or marketing?

    Analysis of reviews on sites (Yandex.Market, Wildberries, Ozon) shows that TopAuto AZU 108 has a rating 4.6/5 based on 1 200+ ratings. Here are the key points:

    Pros (according to users):

    • ✅ Quickly restores batteries after deep discharge.
    • ✅ Compact size - convenient to store in the trunk.
    • ✅ Clear display with voltage and current indication.

    Cons (common complaints):

    • ❌ Short wires are inconvenient to connect to the battery installed in the car.
    • ❌ Noisy fan at maximum current.
    • ❌ No storage case included.

    Interesting fact: approx. 15% negative reviews are related to improper use. For example, users tried to charge lithium batteries or connected the device to a battery with reverse polarity. This led to the protection being triggered and the product being returned as “defective”.

    Conclusion: AZU 108 meets expectations correct use. If you need a reliable device for lead-acid batteries without the bells and whistles, this is a good choice. For professional use (service stations, car parks), it is better to consider models with current from 10A and battery testing function.

    💡

    TopAuto AZU 108 is the best option for home use thanks to automatic control and support for modern battery types. However, for professional tasks (for example, restoring batteries after long-term storage), a more powerful device will be required.

    Where to buy and what to look for?

    Buy TopAuto AZU 108 possible in the following places (prices are valid for 2026 year):

    • 🛒 Official dealers:
      • Manufacturer's website (topauto.ru) — ~4 200 ₽.
      • Stores AutoSpetsCenter, AutoAll — 4 000–4 500 ₽.
    • 🌐 Marketplaces:
      • Yandex.Market — 3 800–4 300 ₽ (there are discounts with promotional codes).
      • Ozon — 3 990 ₽ (delivery 1–3 days).
      • Wildberries — 4 100 ₽ (payment upon receipt is possible).
    • 🏪 Auto stores:
      • AutoMag, 220 Volt — 4 300–4 600 ₽.

    What to look for when purchasing:

    1. Equipment: The box should contain:
      • Charger.
      • Clamps"crocodile".
      • Network cable.
      • Instructions in Russian.

    The absence of at least one item is a reason to refuse the purchase (risk of counterfeiting).

  • Warranty: Official guarantee - 12 months. Check for a warranty card stamped by the store.
  • Packing condition: The box must be intact, without traces of opening. A sticker with a serial number is required.

    • Tip: If you buy on the marketplace, choose sellers with a rating 4.8+ and number of sales 100+. This will reduce the risk of running into a fake. Also check that the product title says TopAuto AZU 108, not just "8A charger".

    ⚠️ Attention: On Avito and similar sites often sell used devices at the price of new ones. Be careful - such devices may have expired capacitors or transistors, which will lead to unstable operation. Check the device on site: connect it to the battery and make sure the display shows the correct voltage.

    FAQ: answers to frequently asked questions

    Is it possible to charge the battery without removing it from the car?

    Yes, but with reservations:

    • Disable "–" terminal from the battery to avoid voltage surges in the on-board network.
    • Do not connect the charger while the engine is running.
    • Make sure there are no flammable materials near the battery.

    If the car has sensitive electronics (for example, a premium audio system), it is better to remove the battery.

    How long does it take to fully charge?

    Time depends on:

    • Battery capacities (for example, 60Ah will charge in 8–10 hours at current 6A).
    • Degree of discharge (a deeply discharged battery requires precharging).
    • Ambient temperature (in cold weather the process is slower).

    AZU 108 automatically turns off when reaching 100% charge, so overcharging is excluded.

    How is it different? AZU 108 from AZU 105?

    Main differences:

    Characteristics AZU 108 AZU 105
    Max. current (12V) 8A 5A
    24V support ✅ Yes ❌ No
    Desulfation ✅ Yes ❌ No
    Price ~4 200 ₽ ~3 000 ₽

    Choose AZU 108if you need to charge 24V batteries or higher current. For passenger cars with battery 50–70Ah enough AZU 105.

    Can the device be used to charge batteries from a UPS?

    Yes, but with restrictions:

    • ✅ Suitable 12V lead-acid batteries from a UPS (for example, Delta, CSB).
    • ❌ Sealed batteries are not suitable (VRLA) with voltage higher 14.4V.

    Set the current to no more than 10% of capacity (for example, for a battery 7Ah - current 0.7A).

    How to reset the error "ERR"?

    Error"ERR" appears in the following cases:

    • Short circuit in the circuit (check wires and terminals).
    • Polarity reversal (swap "+" and "–").
    • Battery fault (voltage below 2B or higher 16V).

    To reset the error:

    1. Disconnect the device from the network.
    2. Remove the clamps from the battery.
    3. Wait 10 seconds and reconnect.

    If the error persists, contact the service center.