Appendix D: Recommended Float/Equalize Voltages / Temp. Compensation; Temperature Compensation - HindlePower AT30 SERIES Operating And Service Instructions

APPENDIX D
RECOMMENDED FLOAT AND EQUALIZE VOLTAGES
This table contains suggested values for commonly used batteries. Consult your battery
manufacturer's documentation for specific values and settings for your battery type.
Battery Cell Type
Antimony (1.215 Sp. Gr.)
Antimony (1.250 Sp. Gr.)
Selenium (1.240 Sp. Gr.)
Calcium (1.215 Sp. Gr.)
Calcium (1.250 Sp. Gr.)
Absorbed / Gelled Electrolyte *
(sealed lead-acid type)
Nickel-Cadmium (Ni-Cd)
* Sealed lead-acid batteries should not be used in ambient temperatures above 95 °F /
35 °C, and should not normally be equalized. Consult your battery manufacturer's
documentation for specific equalizing recommendations.

TEMPERATURE COMPENSATION

If your batteries are to see temperature variations during charging, a temperature
compensation option (EJ5033-0#) is recommended. If this option is not part of your
AT30, manual adjustments should be made. Refer to the equation and table below for
temperature-adjusted voltages.
temperature-adjusted voltage = charge voltage x K
Temperature
(°F)
35
45
55
65
75
77
85
95
105
90
Float Voltage/cell
Temperature
(°C) (Lead-Acid)
1.7
7.2
12.8
18.3
23.9
25.0
29.4
35.0
40.6
Recommended Recommended
Equalize Voltage/cell
2.17
2.20
2.23
2.25
2.29
2.25
1.42
K
(Nickel-Cadmium)
1.058
1.044
1.031
1.017
1.003
1.000
0.989
0.975
0.961
2.33
2.33
2.33 - 2.40
2.33
2.33
*
1.47
K
1.044
1.034
1.023
1.013
1.002
1.000
0.992
0.981
0.970