Q: What kinds of emergency light batteries are there?

Tags: Q: What kinds of emergency light batteries are there? Answer: The most commonly used emergency light batteries are lead-acid batteries, lithium batteries and nickel-metal hydride batteries (nickel-cadmium is also used, but the pollution is relatively large, so it is generally rarely used now). Lead-acid batteries are mainly based on 6V and 12V, which have the advantage of providing large current and longer power supply time. But because of its large size, it can only be used for relatively large-scale, high-power, and high-voltage emergency lights. Lithium batteries can charge and discharge at a high rate, mature technology, high energy density, no memory effect, long cycle life, low self-discharge, but high cost. Ni-MH batteries are small in size, high-rate charging and discharging, technology is mature, but the cost is also high.
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