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Contact Us
Voice: 941-474-0110
Fax: 941-474-1983
1-800-718-8816
9am-4pm Eastern
Technical
rob@nwes.com
Sales: jean@nwes.com
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This information does not apply to any VRLA, AGM, or Gelled, type batteries
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Freezing Points of Battery
Electrolyte |
| Specific Gravity |
Centigrade |
Fahrenheit |
| 1.000 |
0 |
+32 |
| 1.050 |
-3.3 |
+25 |
| 1.100 |
-7.7 |
+18 |
| 1.125 |
-10 |
+18 |
| 1.150 |
-15 |
+5 |
| 1.175 |
-20 |
-4 |
| 1.200 |
-26 |
-15 |
| 1.210 |
-31 |
-23 |
| 1.220 |
-36 |
-33 |
| 1.230 |
-41 |
-42 |
| 1.260 |
-57 |
-71 |
| 1.270 |
-62 |
-80 |
| 1.280 |
-66 |
-87 |
| 1.290 |
-69 |
-92 |
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Temperature Effects on Voltage |
| Electrolyte Temperature °F |
Cell Voltage to be subtracted from measured
volts |
Electrolyte Temperature °F |
Cell Voltage to be added to measured volts |
| 49-51 |
-.09 |
76-78 |
None Needed |
| 52-42 |
-.08 |
79-81 |
+.01 |
| 55-57 |
-.07 |
82-84 |
+.02 |
| 58-60 |
-.06 |
85-87 |
+.03 |
| 61-63 |
-.05 |
88-90 |
+.04 |
| 64-66 |
-.04 |
91-93 |
+.05 |
| 67-69 |
-.03 |
94-96 |
+.06 |
| 70-72 |
-.02 |
97-99 |
+.07 |
| 73-75 |
-.01 |
100-102 |
+.08 |
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Temperature Effects on Capacity |
| Electrolyte Temperature °F |
Percent Capacity |
| 77 |
100% |
| 60 |
95% |
| 50 |
91% |
| 40 |
87% |
| 30 |
81% |
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Temperature Effects On Specific
Gravity |
| Electrolyte Temperature °F |
Correction Factor |
| 39-41 |
-.012 |
| 42-44 |
-.011 |
| 45-47 |
-.010 |
| 48-50 |
-.009 |
| 51-53 |
-.008 |
| 54-56 |
-.007 |
| 57-60 |
-.006 |
| 61-63 |
-.005 |
| 64-66 |
-.004 |
| 67-69 |
-.003 |
| 70-72 |
-.002 |
| 73-75 |
-.001 |
| 76-78 |
0.00 No Change |
| 79-81 |
+.001 |
| 82-84 |
+.002 |
| 85-87 |
+.003 |
| 88-91 |
+.004 |
| 92-94 |
+.005 |
The graph below pertains to batteries that have a fully charged Specific
Gravity of 1.280. Graphs for other batteries will appear different.
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