The valve regulated, spill-proof construction of this battery allows trouble-free, safe operation in any position. There is no need to add electrolyte, as gases generated during charging are recombined in a unique "oxygen cycle".
Long Service Life.

A dependable service life can be expected under normal operating conditions.
Long Shelf Life.

Low self-discharge rate allows for storage of fully charged batteries for longer periods of time before charging is required. Lower storage temperatures will further extend shelf life.

Wide Operating Temperature Range

Rugged Construction
The high-impact resistant battery case is made either of non-conductive ABS plastic or styrene. Large capacity batteries frequently have polypropylene cases, all of these materials impart great resistance to shock, vibration, chemicals and heat.

VRLA battery basically conquer some weakness of normal batteries, gradually replacing other type of sealed lead acid batteries. There are some features of VRLA battery:

(1)Maintenance free, no need add water, no need do proportion of acid and so on.
(2)High-current discharge performance, especially the excellent perfoemance of the impact of discharge.
(3)Self-discharge current, whose self-discharge daily rate 2% below under 25 which is about 1/4-1/5 of other types of sealed lead acid battery.
(4)No leaking acid, no mist, non-corrosive, does not hurt, low pollution on environment.
(5)Long life, uesd under 25 floating charge, the battery life is up to 10-15 years.
(6)Compact construction, good sealing, the battery can be installed with other equipment in the same room, can be vertical or horizontal installation, small footprint, good vibration resistance.
(7)Don't exist the shortcoming of "memory effect"(referring to the cycle of work, the capacity loss) of nickel-cadmium battery.