My robot vacuum cleaner no longer holds a charge, what should I do?

Your robot vacuum cleaner works for a few seconds or a few minutes and then turns off by itself when it was fully charged? Do you notice that he has lost autonomy? The origin of the problem is almost certain: it comes from the battery. Indeed, all the batteries of electrical devices have a limited lifespan. Relatively fragile, by dint of loading and unloading, they end up getting tired and breaking down. Sometimes warning signs appear (longer charging, shorter battery life, device turning off before the battery is fully discharged). While sometimes, overnight, the robot vacuum no longer holds a charge or outright refuses to turn on. So, what to do to solve this problem effectively?

What to do when your vacuum cleaner no longer holds a charge?

When your robot vacuum cleaner does not hold a charge or has lost its autonomy, the problem most certainly comes from the battery. You will need to test it to confirm the problem. Then you replace it. But be careful, not with just any battery. Discover all the answers in this article.

Note: If the vacuum cleaner battery does not charge normally or at all, the problem may be with its charging base or the charger. In this case, it will then be necessary to test these elements. We invite you to our article on this subject: my robot vacuum cleaner no longer charges, what should I do?

How to test your robot vacuum's battery?

Important : Before disassembling the vacuum cleaner, unplug it from its power source. Before testing the battery, make sure it is disconnected. Risk of electric shock and damage to the device. Use an antistatic mat and gloves. If you are not able to perform the manipulations, call a professional. 

To make sure it's good the battery which is responsible for the loss of autonomy on your robot vacuum cleaner, you can tests. To do this, here is how to proceed:

  1. Charge the battery to its maximum capacity (refer to the instructions given by the manufacturer of your vacuum cleaner)
  2. Once the battery is fully charged, remove the robot vacuum from the charger
  3. Immediately afterwards, disassemble the vacuum cleaner to access the battery, disconnect it and measure the voltage at its terminals. It should be approximately equal to the voltage written on it.

1 – If it supplies no voltage or too low a voltage, it is faulty and that is why your robot vacuum cleaner no longer holds a charge. You will then have to replace it with a original new battery.

2 – If the voltage is correct, put the battery back in the vacuum cleaner and close the cover. Then let your robot vacuum cleaner run on minimum power mode and time its autonomy. If it discharges faster than the normal autonomy, it is defective. You will then need to replace it.

How to replace the battery of your robot vacuum cleaner?

Caution: Turn off and unplug the robot vacuum from its power source before replacing its battery. 

When the robot vacuum cleaner battery no longer holds a charge, and the failure is confirmed, there will then be no choice but to replace it. Most robot vacuum manufacturers allow easy access to replace the battery on your own. However, the method may vary from one model of vacuum cleaner to another. Generally, the method consists of:

  1. Turn the robot over to access the bottom compartment of the vacuum cleaner.
  2. Remove the screws securing the battery compartment and remove the cover. (Note: refer to the user manual to find out if you need to remove all the screws or if the battery is in an isolated compartment. Indeed, you do not always have to disassemble the entire robot).
  3. The battery often sits on top of other components. Unclip it to remove it from the robot.
  4. Insert the new battery into the slot, being careful to clip it in place.
  5. Close the lid, then place the robot vacuum on its charging base.
  6. Fully charge the battery.

If in doubt about the procedure, refer to the user manual or to internet tutorials by typing the reference of your vacuum cleaner.

Which new battery to choose?

Note, you will need to you replace the defective battery that does not hold a charge with a new original or compatible battery. Avoid fakes at all costs. Indeed, in addition to using components that are often less qualitative, counterfeit batteries do not always comply with national regulations and applicable international and regional safety standards. Thus, safety precautions are not always in line with what they should be. These products can therefore have a direct impact on user safety and the lifespan and/or performance of your device.

We advise you to buy an original charger from the brand of your robot vacuum cleaner to be certain of the quality and compatibility of the product. Also be sure to pay attention to whether it is compatible with the model of your vacuum cleaner, since the batteries used can vary even within the same manufacturer. If in doubt about the battery reference, seek advice from the after-sales service of the manufacturer of your vacuum cleaner or from a store specializing in household appliances.

How to maintain the battery of a robot vacuum cleaner?

Robot vacuum that no longer holds a charge, what to do?

Although batteries eventually wear out despite proper maintenance, improper use of the battery can accelerate its wear and therefore lead to premature failure. So, to prevent the battery of your robot vacuum cleaner from prematurely losing autonomy, here are some advices to be continued :

– Avoid the battery dropping below 20% of its charging capacity.
– Place the vacuum cleaner in a place where the temperature is between 5°C and 35°C.
– Avoid placing the vacuum cleaner in a humid place or in direct sunlight.
– When the Robotic Cleaner is fully charged, unplug it from the power source (charger or cradle). Indeed, when the battery is constantly left under voltage, it can wear it out prematurely.
– Regularly clean the robot to prevent the motor from straining and draining the battery. Refer to the maintenance and cleaning advice corresponding to the make and model of your vacuum cleaner.

What if despite everything your robot vacuum cleaner still does not hold a charge?

If you have replaced the battery of your robot vacuum cleaner which no longer holds a charge but this malfunction persists, it may be that the problem comes from another component. It may then come from the charging accessory (charger or charging base), the electronic card or a faulty power supply between the other elements of the device and the battery.

In this case, the manipulations require more advanced electrical clearances. We therefore advise you to call a professional repairer so that it can identify the faulty component, and thus replace it without risk to you or your device.

Loss of robot vacuum battery autonomy what to do?

This is all the more advisable if your robot vacuum cleaner, which has lost its autonomy, is still under warranty. Note that the manufacturer's warranty is 2 years minimum in France. If you are in this case, then contact the after-sales service of the manufacturer of your vacuum cleaner. You will then be entitled to a free repair.

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