SERVICE MANUAL NUMBER 26
STARTING SYSTEM
Charging Guide
12
Volt Battery Recommended Rate* and Time for Fully Discharged Condition
Twenty Hour
Rating
5
Amperes
10
Amperes
20
Amperes
30
Amperes
40
Amperes
50
Amperes
50
Ampere-Hours or 10 Hours 5 Hours
less
2-1/2
Hours
2 Hours
Above 50 to 75
Ampere-Hours
7-1/2
Hours
3-1/2
Hours
2-1/2
Hours
1-1/2
Hours
15
20
Hours
2 Hours
Above 75 to 100
Ampere-Hours
2-1/2
Hours
Hours 10 Hours 5 Hours
3 Hours
2 Hours
3 Hours
4 Hours
Above 100 to
150
Ampere-Hours
7-1/2
Hours
3-1/2
Hours
30 Hours 15 Hours
5 Hours
Above 150
Ampere-Hours
6-1/2
Hours
20
Hours
10 Hours
5 Hours
*
Initial rate for constant voltage taper rate charger
To avoid damage, charging rate must be reduced or temporarily halted, if:
1.
2.
Electrolyte temperature exceeds 125° F (52° C).
Violent gassing or spewing of electrolyte occurs.
Battery is fully charged when, over a two hour period at a low charging rate in amperes, all
cells are gassing freely and no change in specific gravity occurs. For the most satisfactory
charging, the lower charging rates in amperes are recommended.
Full charge specific gravity is 1.260-1.280, corrected for temperature with electrolyte level
at split ring.
Battery Power as Affected by Temperature
100%
83%
80°F
°C)
100%
165%
(27
32°F (0°C)
250%
350%
0
(-18
°F
61%
45%
°C)
-20
(-29
°F
°C)
74310
Power (Watts) Available
Power (Watts) Required
INDEX
90-861329--1
MARCH 1999
Page 4A-9
| Categories | Mercury MerCruiser Manuals |
|---|---|
| Tags | Mercury MerCruiser 181 CID |
| Model Year | 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011 |
| Download File |
|
| Document File Type | |
| Copyright | Attribution Non-commercial |
(6 votes, average: 5 out of 5)
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Great resource. Excellent information provided.
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