What are the advantages and disadvantages of rechargeable batteries?

   The advantage of rechargeable batteries is long service life, even if the price is more expensive than a primary battery. However, from the perspective of long-term use, it is economical and practical, and the load force of rechargeable batteries is higher than that of most primary batteries. However, the discharge voltage of ordinary secondary batteries is basically constant, and it is difficult to predict when the discharge will end, so it will cause some inconvenience during use. But the lithium ion battery can provide the camera equipment with a longer use time, high load force, high energy density, and the discharge voltage decline with the depth of discharge weakened.

   Ordinary secondary batteries have a high self-discharge rate, so they are suitable for high-current discharge applications such as digital cameras, toys, power tools, emergency lights, etc. It is not suitable for situations where small current is discharged for a long time, such as remote control, music doorbell, etc., nor is it suitable for places such as flashlights for long periods of intermittent use. At present the ideal battery is lithium battery, almost have all the advantages of the battery, self-discharge rate is very low, the only drawback is that the charge and discharge requirements are very strict, which is the guarantee of life.