Cadex C4000 SERIES, User Manual

Page: 101 / 152

C-Code Tables
2. Number of Cells
•
CODE
CODE
CODE
1 cell 01 5 cells
05
9 cells 09
2 cells 02 6 cells
06
10 cells 10
3 cells
03 7 cells
07 11 cells
11
4 cells 04
8 cells
08 12 cells
12
Table 11.2
Number of cells specifies how many
cells a battery pack contains.
Cell voltage definition
NiCd (Nickel Cadmium)
=
1.25 volt per cell
NiMH (Nickel Metal Hydride)
=
1.25 volt per cell
SLA (Sealed Lead Acid)
=
2.00 volt per cell
Example
A 6-cell NiCd has a nominal voltage of 7.5V; an a-cell
NiCd has 10.00V. A 6-cell SLA has a nominal voltage of
12.00V; an a-cell SLA has 16.00V.
Equipment limitation
Nominal cell voltage
Example
How to calculate the
number of cells
Maximum
#
of cells on Lead Acid
=
a cells or 16V
Maximum
#
of cells on NiCd or NiM H = 12 cells or 16V
Some manufacturers rate the cell voltage of the NiCd
and NiMH batteries at 1.20V rather than 1.25V. This
discrepancy
results in a different battery voltage on the
label only. The test results are not affected as the
nominal cell voltage is an arbitrary assumed value.
An a-cell NiCd battery specified at 1.20V per cell is
labelled 9.6 volts. The same battery with the cell
specified at 1.25V is labelled 10.00 volts. Both batteries
are serviced in the same way.
When establishing the number of cells of a NiCd or
NiMH battery, divide the terminal voltage by either 1.20V
or 1.25V; whichever divides into an even number. On
SLA batteries divide the terminal voltage by 2.00V.
11-8
•
•