Cell features - spec30190018

DOE-SPEC-3019-96

ATTENTION:

In the next paragraph, enter the desired positive-plate type. Plate type shall be lead calcium or lead antimony.

Most manufacturers add a doping agent such as selenium or arsenic to produce the desired battery characteristics.

Consult the battery manufacturer for details.

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b. Batteries shall be of the [lead-calcium] [lead-antimony] alloy type, with

positive and negative plates of Seller's standard design. Active material for

the positive plates shall be lead dioxide, and for the negative plates shall be

sponge lead. Active materials shall be retained in structures designed to

retard corrosion and withstand over-charging. Negative plates shall have a

life equal to or greater than that of positive plates.

3.3.3

Cell features.

a. Each cell element shall be in a fire-retardant, high-impact plastic jar and

cover. The jar and cover material shall have a limiting oxygen index (LOI) of

at least 28%.

b. Heat seal, cement or otherwise fasten cell covers to containers to form a

leakproof and gas-tight seal, and fit with a pressure-relief vent to relieve

excess pressure.

c. Design cells to accommodate plate growth such that the jar and cover will not

crack.

ATTENTION:

Enter the appropriate cell voltages below. The float voltage depends on the plate alloy and specific gravity

selected. Refer to the battery manufacturer's recommended values. The equalization voltage and the minimum

discharge voltage are normally determined from the maximum and minimum input voltage ratings of the

UPS/connected system.

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d. All cells shall be suitable for float at [2.25 V] [

V] per cell and equalize at

V] per cell. The minimum discharge voltage shall be [1.75 V]

[2.25 V] [

V] per cell.

[

e. Support plates so that no undue stress is placed on the jar or cover during

the life of the battery. Negative and positive plates shall be matched.

Reinforce the plates as needed to retain their shape and maintain the low

internal resistance necessary to carry the current to or from all parts of the

plate under all operating conditions. Separators shall be impervious to the

chemical action within the cell, and shall provide proper spacing and

insulation between the plates to permit free circulation of evolved oxygen.

The individual cells or containers shall be suitable for mounting in either

stacked modules or standard racks. Stacking of cells horizontally shall have

no effect on cell integrity or performance.