Power-Sonic Sealed Lead Acid Batteries - Technical Manual - Manual (Page 4)

Battery Construction
Relief valve
In case of excessive gas pressure build-up
inside the battery, the relief valve will open
and relieve the pressure. The one-way valve
not only ensures that no air gets into the
battery where the oxygen would react with
the plates causing internal discharge, but
also represents an important safety device in
the event of excessive overcharge.
Vent release pressure is between 2-6 psi; the
seal ring material is neoprene rubber .
Terminals
Depending on the model, batteries come either with AMP Faston type
terminals made of tin plated brass, post type terminals of the same
composition with threaded nut and bolt hardware, or heavy duty flag
terminals made of lead alloy.
A special epoxy is used as sealing material surrounding the terminals.
Electrolyte
Immobilized dilute sulfuric
acid: H
2
S0
4
.
Separators
Power-Sonic separators are made
of non-woven glass fiber cloth
with high heat and oxidation
resistance. The material further
offers superior electrolyte
absorption and retaining ability,
as well as excellent ion
conductivity.
Plates (electrodes)
Power-Sonic utilizes the latest
technology and equipment to
cast grids from a lead-calcium
alloy free of antimony. The
small amount of calcium and
tin in the grid alloy imparts
strength to the plate and
guarantees durability even in
extensive cycle service. Lead
dioxide paste is added to the
grid to form the electrically
active material.
In the charged state, the
negative plate paste is pure
lead and that of the positive
lead dioxide. Both of these are
in a porous or spongy form to
optimize surface area and
thereby maximize capacity. The
heavy duty lead calcium alloy
grids provide an extra margin of
performance and life in both
cyclic and float applications and
give unparalleled recovery from
deep discharge.
Leakproof Design & Operational Safety
The leak proof construction of Power-Sonic batteries has
ensured that our batteries have been approved for
shipment by air, both by D.O.T. and I.A.T.A. Copies of
these approvals are available on our website:
www.power-sonic.com.
U.L’s component recognition
program for emergency lighting and
power batteries lists Power-Sonic
under file number MH20845
Case Sealing
Depending on the model the case
sealing is ultrasonic, epoxy or
heat seal.
Container
Case and lid material is ABS,
high impact, resin with high
resistance to chemicals and
flammability. Case and cover are
made of non-conductive ABS
plastic to UL94-HB or UL94 V-O.
This case has molded-in dividers
for each 2 volt cell.