How to fix if Robot Vacuum Not Charging?

Today, robot vacuum have been widely used in many houses, which have largely solved our indoor cleaning problems and reduced the workload of cleaning and sanitation. However, more people have used it, and more and more problems have been discovered. Today, I will discuss with you: the reasons and solutions for the failure of the cleaning robot to charge.

The automatic recharging of the robot vacuum is continuously sending out signals through the charging base, and then the receiver on the top of the robot receives the signals and successfully locates them, thus embarking on the “Go Back home” road. However, I believe that many users have encountered the failure of recharge of the sweeper in actual use.

Why does robot vacuums not charge?

Firstly,you should know about the technologies of robot vacuums automatic recharging.

Differant Reasons of charging failure for differant automatic recharge technologies for robot vacuums

There are multiple technical principles for the automatic recharging technology of the robot vacuums. The most important ones are Infrared Positioning System, Bluetooth Positioning and Radar Positioning System.

Automatic recharge technologies for robot vacuums
Infrared Positioning System
Bluetooth Positioning
Radar Positioning System

These three positioning technologies each have their own disadvantages:

Why rabot vacuums with Infrared Positioning System not charging?

The infrared positioning accuracy is high, so about 70% of the average value on the urban surface uses infrared positioning. Therefore, when the robot vacuum works in a dusty environment, some dust debris can easily interfere with the infrared receiver on the fuselage, causing the sweeper to fail to recharge.


Why rabot vacuums with Bluetooth Positioning not charging?

Bluetooth technology locates by measuring the strength of the model, and its power is relatively low. Generally speaking, the positioning system manufactured by Bluetooth is relatively small, so it is very suitable for integration in the circuit of the robot vacuums. The biggest advantage of using this technology is that the device is small and easy to integrate into small smart devices. Of course, in addition to the advantages, Bluetooth technology also has its corresponding shortcomings. That is, the manufacturing cost of Bluetooth devices and equipment is relatively expensive, and for complex space environments, the stability of the Bluetooth system is poor, and the interference from noise signals is relatively Large, so not really used in the robot vacuums industry.

bluetooth positioning indoor location tracking

Why rabot vacuums with Radar Positioning System not charging?

Ultrasonic radar positioning, also known as bionic ultrasonic positioning technology, mainly locates objects through reflective ranging, the principle of which is modeled on bats in reality. Ultrasonic radar positioning and ranging is greatly affected by multipath effects and non-line-of-sight propagation, and has a higher production cost. However, compared to infrared positioning, the resolution of black objects and transparent objects is more accurate.

What should we do if the robot vacuums fails to recharge?

A video from youtube:

The robot vacuums failed to recharge,in fact, there are two cases. One is that the robot vacuums cannot find the charging base, and the other is that the robot vacuums find the charging base but cannot charge normally.

What to do if the robot vacuums cannot find the base?

The robot vacuum has been unable to find a base on the recharging road and is slowly moving blindly, which really drives many users crazy, especially those that are not equipped with a physical remote control, only the recharge button on the machine or only through the mobile APP Controlled models. Furthermore, when the robot vacuum needs to recharge, it usually detects that the battery is insufficient for itself. Therefore, in this way, it is afraid that the remaining power will be consumed on the “finding home” road.

What to do if the robot vacuums cannot find the base(1)

Check environmental factors which affecting recharge

The robot vacuums cannot find the base. The first thing to do is to check the environment where the charging base is placed. Generally speaking, the charging base should be placed on an open and flat ground, close to the wall, and away from steps or steps. Place, and there should be no debris within 0.5-1 meters in front and on both sides.

Determine if the charging base is faulty

Place the robot vacuums at a distance of 1.5 meters from the charging base. Manually start the automatic recharge function of the robot vacuums to see if it can successfully return to the base. If not, move the robot vacuums directly to the base and manually align it. Check whether the charging pole piece can be charged normally. If it can be charged, it means that the annunciator of the base has failed and should be repaired.

What to do if robot vacuums finds the base but cannot charge normally?

What to do if robot vacuums finds the base but cannot charge normally

In the case where the robot vacuum finds the base but cannot always charge normally, the most likely case is that there is interference on the charging pole piece. At this time, wipe the charging pole piece of both the charging base and the robot vacuum with cloth.

Another situation is that contact a robot vacuum, but found that it often repeated several times when returning to charging, but at this time, I gently pushed it with my hand, and it could smoothly return to the position and charge. After a closer look, it turned out that the pole piece design of the charging base was a bit too high.

In this case, using double-sided adhesive or transparent adhesive to help the sweeper’s universal wheel enter the base is slightly elevated by about 1 mm, so that each time the robot returns to the base, it will be in place smoothly once.


When the robot vacuums fail to return to charge, we can try the following measures:

1. Check the environmental factors that affect the recharge (position of the base, indoor debris, whether there are appliances that generate interference signals near the base, etc.);

2. Use a dry cloth to clean the contact between the bottom of the charging base and the robot vacuum and the base;

3. Place the robot vacuum towards the base at a distance of 5 feet (about 1.5 meters). Start the robot vacuum and press the “Self-seat” button to see if the robot vacuum can successfully return to the charging stand for charging. If not, you need to perform maintenance;

4. Determine whether the sensor of the sweeping robot is working, start the robot vacuum, and observe whether it will automatically avoid the obstacles, if not, it means that the sensor of the robot vacuum is malfunctioning;

5. Check whether the charger is damaged, and check whether the indicator light of the charger is steady green.

Summary: As a smart small home appliance that helps modern people reduce the burden of cleaning,robot vacuums,because of their cleaning performance, appointment function, and automatic recharge function, make it unnecessary for users to worry about home cleaning. However, once the automatic recharging function of robot vacuums fails, this will greatly affect the normal use of the machine and the user experience. Therefore,some common small questions suggest that you still need to know more.

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