For the remote control mouse does not have a built-in lithium battery

"Why is the disposable dry battery so environmentally friendly? Why can't the product like the remote control, Bluetooth mouse and keyboard be directly built-in battery, then recharge and use when there is no electricity!!?? Just because of the cost?"

I believe that there are many netizens who have doubts about this problem. The dry battery is inconvenient and not environmentally friendly. Why is the current science and technology developed to such a degree, and the remote control, Bluetooth mouse and keyboard, etc. seem to have been ignored, and have been used. What about dry batteries? In fact, no matter how the problem is solved, it can't be separated from the cost.

Why are products such as the remote control Bluetooth mouse still using dry batteries?

It is well known that most of the Bluetooth mouse and keyboard and remote control are using dry batteries. As for why there is no built-in battery and other direct charging when there is no electricity, the most important point is because of the remote control, Bluetooth mouse keyboard and mobile phone, electric car. The difference between other devices that use recharge technology** is that the power consumption of the remote control and Bluetooth mouse and keyboard is too small.

Usually, the battery management system inside the device will judge the remaining battery power according to the change of voltage, and prevent the battery from being over-discharged. Over-discharge means that the battery exceeds the final threshold of battery discharge during discharge. Continued discharge will cause the internal pressure of the battery to rise. The lithium ion of the positive electrode of the battery migrates to the negative electrode, causing the structure of the positive electrode to collapse. The reversibility of the positive and negative active materials is damaged, and the internal capacity of the battery is significantly reduced. The battery management system of the mobile phone or other rechargeable devices will ensure that the device will not be used during use, and cannot be activated when the power reaches the threshold to avoid damaging the battery capacity.

Unlike the mobile phone, the remote control and the Bluetooth mouse have very little current and the voltage drops slowly. The voltage affected by these few currents is more difficult to make the battery protection circuit accurate compared with the voltage affected by the normal current. Judging that when the battery management system produces protection, the internal battery power is often over-discharged. This loss is extremely damaging to the battery, and it is easy to make the battery a disposable battery.

If the manufacturer wants to equip the mouse and remote control with a built-in battery, then the battery uses a battery of whatever type, basically a branch of the lithium battery, and then raises the low-voltage alarm threshold, which will increase the process, and Technical costs increase the cost. The price difference between a Bluetooth mouse and a dry battery is at least one-third more expensive, which means that many manufacturers choose to make dry batteries in order to compete with competitors in price wars. As far as the remote control itself is an accessory, the manufacturer does not want to make a high-cost remote control to increase the cost of the entire product. After all, it is the era of price wars.

In fact, in summary, the cost of the Bluetooth mouse and the remote control is relatively low, the selling price is relatively cheap, and the remote control is an accessory product. If the rechargeable battery is used to increase the cost, it is not compatible with the manufacturer. beneficial. That is to say, it is because of cost reasons that limit technology. Also because of the low iteration of these devices, today's remote controls still use dry batteries. In fact, in simple terms, the use of dry batteries is simpler and cheaper than lithium batteries.