About Batteries

Voice: 941-474-0110

Fax: 941-474-1983

1-800-718-8816

9am-4pm Eastern

Here you will find information pertaining to all flooded (not sealed or gelled) Lead-Acid Batteries.

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

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

Temperature Effects on Capacity
Electrolyte Temperature °F	Percent Capacity
77	100%
60	95%
50	91%
40	87%
30	81%

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.

Voice:941-474-0110 9am-4pm Eastern Time