Battery Backup Damp Location Ceiling Mount Vandal Resistant Nickel–Metal Hydride (NiMH) Sealed Lead Acid (SLA) Cold Weather NEMA Rated Battery Backup
Battery Backup
Products with battery backup contain a battery so in the case of a power outage the lights or signs with stay illuminated for roughly 90 minutes.Damp Location
These items can be placed where they may be splashed with water. Typically they are safe to be used outdoors.NEMA Rated
NEMA Rated enclosures are intended for indoor or outdoor use primarily to provide a degree of protection against the entry of water during prolonged submersion at a limited depth. NEMA 12 NEMA 12 enclosures are designed to prevent the ingress of dust, water, and oil.Cold Weather
Cold WeatherVandal Resistant
Products that are designed to be installed in a location (or devices) where they may be subject to vandalism.Ceiling Mount
Ceiling MountSealed Lead Acid (SLA)
SLA batteries are the most reliable and widely used power source. They can recharge much faster than a flooded lead acid battery, and the calcium added to their plates helps reduce water loss. Sealed lead acid batteries can recycle the gases they produce and can prevent damage to the battery when the charge rate is controlled. These batteries must always be kept in upright positions and protected from leakage.Nickel–Metal Hydride (NiMH)
NiMH batteries can have two to three times the capacity of an equivalent size NiCd, and their energy density approaches that of a lithium-ion cell. Nickel–Metal Hydride batteries are good for high current drain applications because of their low internal resistance.
The disadvantage of NiMH batteries is their high rate of self-discharge. NiMH batteries typically lose 4% of their charge per day of storage. LSD NiMH batteries significantly lower self-discharge, but at the cost of lowering capacity by about 20%.