Selecting the right power source is a critical step in organizing a video surveillance system, especially when it comes to popular devices in the Xiaomi ecosystem. IP-The first camera charger with a connector will fit USB, And that often causes gadgets to malfunction or fail completely, and in fact, the electronics of the cameras require stable voltages and sufficient current strength to allow all the modules to function properly.
In this detailed guide, we will discuss the technical details that will help you avoid common mistakes when choosing a power adapter, you will learn how to calculate the power required, why you can not save on the quality of the cable and what happens if you apply the wrong voltage to the device, Understanding these basic principles will prolong the life of your security system and ensure continuous video recording.
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Always check the labeling on the bottom of the camera before buying a new power supply – it specifies the exact voltage and current requirements.
Main parameters: voltage and current strength
The first and most important parameter to look at is the output voltage, denoted as V (Volt).For the vast majority of Xiaomi Mi Home home security cameras, including the 360 series, Outdoor and base models, the standard is 5 Volt. Using a higher voltage adapter, such as 9V or 12V, can instantly burn the device's power controller, since the internal components are not designed for such a load.
The second critical parameter is the current strength, denoted as A (Ampre) or mA (milliampre). If the voltage is to match exactly, then the current strength of the power supply can be equal to or greater than the required camera. For example, if the camera requires 1A, you can safely use the unit at 2A, since the device will take exactly as much as it needs. However, using a weak power supply unit (for example, 0.5A instead of 1A) will lead to constant reboots, especially when the IR lights are turned on at night.
- ⚡ The voltage must strictly conform to the requirements of the device (usually 5V).
- 🔋 The current strength of the power supply can exceed the needs of the camera, but not be less than them.
- 🔌 Stability of output parameters is more important than maximum power of the adapter.
It is worth noting that some professional Xiaomi camera models, especially street versions with a powerful zoom or rotary mechanism, may require 12V power. USB-5B adapter will render the device inoperable. Always check the technical documentation or label on the case, which clearly spells out the input parameters of Input.
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The Golden Rule: The voltage (V) should match perfectly, and the current strength (A) of the power supply should be equal to or greater than the consumption of the camera.
Types of connectors and compatibility of cables
Physical connectivity is as important as electrical options. Xiaomi cameras use several types of interfaces to generate power, and it’s easy to get it wrong. The most common option in modern models is a Micro-USB port or the newer Type-C standard. These connectors are convenient in that they make it easy to replace a cable or use standard smartphone chargers if they have enough power.
However, a number of devices, especially street cameras and models of previous generations, are equipped with a round DC power connector. The standard size for most Xiaomi gadgets is a plug 5.5 mm x 2.5 mm. It is important to understand that even if the plug physically enters the socket, the polarity of the connection must coincide. In 99% of cases, the scheme is used where the plus is in the center of the plug and the minus is on the outer shell.
⚠️ Warning: Do not force the plug of the wrong diameter, which can cause mechanical damage to the power socket on the camera board, which will require complex repairs.
The length and quality of the cable also matter. For 5V signals, the loss of voltage over long distances is significant. If you use a USB extender longer than 2 meters, make sure it has a sufficient cross-section of the wires. Thin cables can create high resistance, which will only reach the camera 4.5V or less, which will cause failures in the Wi-Fi module.
Why does the camera go off at night?
Calculation of power and energy reserve
To ensure the stable operation of the video surveillance system, it is not enough to simply find a power supply with a suitable connector. You need to take into account the peak loads that occur during operation. The camera consumes an uneven amount of energy: in standby mode, consumption is minimal, but when you activate the recording, rotate the mechanism or turn on night vision, consumption increases dramatically.
It is recommended to choose a power supply with a current reserve of about 20-30%. This will ensure the operation of the device in a gentle mode, prevent overheating of the adapter and prolong its life. If the camera consumes 1A, the optimal choice will be the power supply to 1.5A or 2A. The unit at its limit often leads to capacitors bloating and failure.
Consider an approximate table of current consumption for different modes of operation of a typical Xiaomi camera:
| Mode of work | Current intake (approximately) | Tension. |
|---|---|---|
| Waiting (Standby) | 0.1 - 0.3 A | 5 V V |
| Video recording (Day) | 0.4 - 0.6 A | 5 V V |
| Night shooting (IR on) | 0.8. 1.2 A | 5 V V |
| Rotation of the mechanism (PTZ) | up to 1.5 A (peak) | 5 V V |
Based on these data, it becomes obvious that the adapter 0.5A (standard for old phones) is categorically not suitable for the full operation of modern phones. IP-He can start the device, but any action that's active, the system will go into defense.
Problems with unstable nutrition and their solution
Poor power is the most common reason for the strange behavior of Xiaomi cameras. If your device constantly reboots, makes clicks, does not connect to Wi-Fi or the video twitches, first check the power supply. Often users sin on the software or router, although the problem lies in the drawdown of the voltage.
This is especially true when using long extension cables or cheap Chinese power supplies without certification, such adapters can only deliver the claimed 5V without load, and when connecting the camera, the voltage drops to 4.2-4.5V. For digital electronics, this is an unstable zone.
- 🔄 The camera is cyclically restarted (flashing the indicator).
- 📉 At night, the image turns black and white and the video is interrupted.
- 🔇 No sound or two-way communication.
To solve the problem, replace the cable with a shorter and better one, and install a power supply with a large supply of current. If the camera is installed far from the outlet, consider using an active one. USB-extender or transfer of the power point closer to the device.
⚠️ Attention: The use of homemade power supplies or adapters with broken insulation is dangerous not only for machinery, but also for life, as it can lead to short circuits and fire.
PoE and alternative sources
For advanced users and systems with a large number of cameras, the issue of using PoE (Power over Ethernet) technology is relevant. Xiaomi’s standard home cameras do not have a built-in PoE module, so you can not power them directly from the network cable. However, there are special PoE splitters that take 48V voltage over twisted pair and convert it to 5V for a USB or DC connector.
This approach eliminates the extra wires and organizes the hidden wiring, and you need a PoE switch or injector, twisted pair cable (categories 5e or higher), and a splitter on the camera side, which is more aesthetically and reliably, because it eliminates many connections in the 5B circuit.
It also allows Power Bank cameras or car batteries to be powered by the appropriate inverters, which makes the video surveillance system autonomous and independent of the power available on the grid, and the key is to make sure that the output voltage of the inverter is stabilized and meets the camera's requirements.
☑️ Checking the power supply system
Frequent errors in choosing an adapter
When buying a new power supply, users often make common mistakes that negate all efforts to set up a security system, one of the most common is buying the cheapest adapter on the market. Cheap units often lack protection from overheating, short circuits and power surges.
Another mistake is ignoring the heating of the power supply, and if the adapter is so warm that it hurts to hold it in your hand, it's a sign of low efficiency and work at the limit. Soon, the power unit will fail, and then the camera may follow. A quality power supply should be warm, but not hot.
Also avoid floating voltages. Some switchable universal adapters (3V-12V) have poor contact in the voltage selector. A random jump can switch mode and the camera will go 12V instead of 5V, which is guaranteed to knock it out.