Common three battery in the fire emergency light
there are a lot of don't know there are some is also used on emergency light to the battery, what our common emergency light battery is that today we see the fire emergency light together common three battery!
the fire emergency light is more often used in batteries for nickel cadmium battery, nickel metal hydride battery and lead acid battery.
but nickel cadmium battery and lead acid battery each containing cadmium and lead the two types of metal elements, at the same time, the two types of battery is lower than the energy, relatively relatively large volume; And nimh batteries fully considering the hydrogen absorbing the cathode metal alloy powder is not conducive to long floating, the price is more expensive, the volume is relatively relatively large; So now, in the fire emergency light products more and more manufacturers begin to use lithium battery pack, in the use of more is three yuan and the two types of lithium iron phosphate material made into cylindrical lithium battery pack. But three yuan battery and lithium iron phosphate batteries in terms of price and safety performance has a bigger difference.
three yuan price is cheaper batteries, lithium iron phosphate battery safety performance is much worse, however, the lithium iron phosphate battery is much more expensive than the ternary cell, but many good safety performance. Fully considering the safety awareness on Chinese mainlanders is much less than the foreign countries, and fully consider the cost, so for the most part the fire emergency light products in mainland China with the ternary batteries, and absolutely most of abroad is in with the lithium iron phosphate batteries. Can have a look at 2. 4 v 4000 mah 18700 detailed specifications for the fire emergency light high temperature nickel metal hydride batteries.
it's product code: 901 - 0022 - 0023
it's batteries models: EPT® 1. 2 v nimh battery 4000 mah 18700 X2
it's nominal voltage: 2. 4 v
it's nominal capacity: 4000 mah
it's charging voltage: 3. 0 v
it's discharging termination voltage: 2. 0 v
it's working temperature range: 0 ~ 70 ℃, charging discharge - 20 ~ 70 ℃
it's storage temperature range: storage, 1 year) - 20 ℃ to + 25 ℃, storage, 6 months) - 20 ℃ and + 35 ℃, storage, 3 months) - 20 ℃ to + 45 ℃
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