Appendix D: Recommended Float/Equalize Voltages / Temp. 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 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
Temperature
(°C) (Lead Acid)
1.7
7.2
12.8
18.3
23.9
25.0
29.4
35.0
40.6
Recommended
Float Voltage/cell 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
Recommended
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