Can the lithium battery of the sweeping robot be replaced? How to replace

At present, the batteries of mainstream outdoor sweeping robots on the market mainly include nickel-chromium batteries, nickel-hydrogen batteries, and lithium batteries. Ni-MH batteries are environmentally friendly batteries, and the cost is much higher than that of nickel-chromium batteries. This sweeping robot can be exported to EU countries for sale. Because the Ni-MH battery has a memory function, there are relatively clear requirements for the first three charging times. In actual use, the capacity of the Ni-MH battery is seriously attenuated. At present, many users complain about the short battery life of the sweeping robot and the high replacement cost. . At present, there are two important reasons why robot cleaners use nickel-metal hydride batteries. One is that lithium batteries with good performance are considered to have hidden dangers, and the other is that the price of lithium batteries is higher than that of nickel-metal hydride batteries due to cost considerations. Lithium batteries are environmentally friendly batteries that can pass Rosh and relevant certifications required by the European Union. At the same time, lithium batteries have the advantages of fast charging, large capacity, and no memory function. Therefore, in recent years, some domestic robot vacuum factories have begun to use lithium batteries. So about the use of Ni-MH or Ni-Cr battery sweeping robot can replace the lithium battery? If the battery of your previous sweeping robot is not a lithium battery, but a nickel-metal hydride or nickel-cadmium battery, we do not recommend that users replace it with a power lithium battery. If you want to change it, please ask a technician to do it. The main reasons are as follows: Point: Can the lithium battery of the sweeping robot be replaced? How to change? 1) The voltage may not match. Different types of batteries have different voltage working intervals. The voltage working interval must be basically the same to work normally. For example, your sweeping robot previously used a nickel-metal hydride battery with a nominal voltage of 12V and a capacity of 2Ah. Its working voltage range should be between 9-14V. Then the working voltage range and capacity of the lithium battery used to replace this battery should be It is basically the same. For example, a 3-junction series lithium battery with a capacity of 2Ah or above can be used, and the operating voltage range is roughly 9-12.6V. 2) The charging modes are different. Ni-MH or Ni-Cd batteries use constant current charging, while lithium batteries must be controlled by constant voltage in addition to constant current. Otherwise, it may cause dissatisfaction or overcharge of the battery and cause safety problems (this The problem is serious). Therefore, if lithium batteries are to be used to replace the previous Ni-MH or Ni-Cd batteries, the charging circuit must be changed, or an external charging method must be used. 3) In actual use, the starting current of the motor is usually large. When replacing, you must carefully match it according to the product manual of the sweeping robot, otherwise it may damage the lithium battery or the lithium battery protection board or cause danger. 4) The external dimensions of the battery pack should be considered. After the lithium battery is replaced, can it fit the original battery compartment? Regarding the larger battery compartment, a large-capacity lithium battery similar to 26650 can be used to obtain a long working time. Disclaimer: Some pictures and content of articles published on this site are from the Internet. If there is any infringement, please contact to delete. Previous: Analysis of common mobile phone battery repair methods