A VRLA battery (valve-regulated lead-acid battery), more commonly
known as a sealed battery (SLA) or maintenance free battery,
is a type of lead-acid rechargeable battery. Due to their
construction, the Gel and AGM types of VRLA can be mounted in any orientation,
and do not require constant maintenance. The term "maintenance free" is a
misnomer as VRLA batteries still require cleaning and regular functional
testing. They are widely used in large portable electrical devices,
off-grid power systems and similar roles, where
large amounts of storage are needed at a lower cost than other low-maintenance
technologies like lithium-ion.
With advanced safety valve system and special
batteries could prevent the chance of battery exposion and
ensure complete safety in normal use.
Sealed and Maintenance-free Operation
There is no corrosive gas generation during
normal use and
no need to check the specific gravity of the electrolyte or
additional water adding during battery's service life.
High Quality and High Reliability
VRLA battery has stable and reliable capacity.
can withstand overcharge, over discharge, vibration and shock.
To assure this high quality and reliability, the batteries are 100%
tested on production line for voltage, capacity, sealing condition
and the safety valve are 100% visually inspected before the final
With the advantages of lead calcium grids alloy
and high purity materials, VRLA batteries could be stored for a certain long
periods of time without recharge.
ABS Containers and Covers
With use of case resin both UL94HB and UL94V-0
containers and covers, high-impact and
fire resistance performance couldbe adopted
with most range of products.