What are the characteristics of batteries used by nursing robots?

　　The common batteries on the market are lead -acid batteries, nickel -metal hydride batteries, and lithium -ion batteries. According to the actual needs of nursing robot manufacturers, these three batteries are likely to be applied to nursing robots. So what are the characteristics of these three batteries?

　　1. Character acid battery characteristics

　　The advantages of lead -acid batteries are stable voltage, cheap price, simple maintenance, stable quality, and high reliability. The disadvantages are also obvious, lower than energy, shorter life, and frequent daily maintenance.

　　2. Features of nickel -metal hydride battery

　　Nickel -hydride batteries are improved by nickel -cadmium batteries. It replaces cadmium with metal that can absorb hydrogen, recycling and reuse, which is an environmentally friendly battery. Has the following advantages and disadvantages.

　　The capacity is high at the same volume. Taking the common 5 battery as an example, the nominal capacity of the nickel -metal hydride battery can reach 2900mAh (Miahota), while the nickel -cadmium battery is only 1100mAh (Miaho).

　　Nickel -hydride batteries have a larger output current than carbon -zinc batteries or alkaline batteries, which are relatively suitable for high -power products. Some special models of some power types even have a larger output current than ordinary nickel -cadmium batteries.

　　The less obvious memory effect, even many brands of nickel -metal hydride batteries have claimed no memory effect.

　　The cycle life is long, and it can be used more than 500 times under the correct use conditions.

　　The self -discharge rate of the old nickel -hydride batteries is high, and the self -discharge rate is stored at 30 to 35 % under full temperature.

　　High temperature resistance is poor, try not to make the temperature of the battery higher than 45 degrees. Otherwise, the life span will be reduced quickly, and the battery internal resistance will increase.

　　Excessive charging has a great impact on the life of the battery and is dangerous, so it is necessary to stop charging when the battery is fully full.

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