19
Note: The length of charge times on these charts are very accurate when using the Reserve Capacity or Ampere
Hour battery ratings. The Cold Cranking Amps and Marine Cranking Amps ratings are approximations and vary from
battery to battery. Always follow the battery manufacturer’s specific charging instructions.
Do not charge deep cycle batteries with a battery charger, or setting on a charger, that has a rating of more than 20
amps. Follow the battery manufacturer’s specific charging instructions.
Table 5.
Length of Charge Time Chart 15 Amps
BATTERY RATINGS
HOURS
TO CHARGE @ 15 AMPS
for the percent-of-charge now in the battery
0%
25%
50%
75%
100%
5.5
4.1
2.8
1.4
0.0
5.1
3.8
2.6
1.3
0.0
4.7
3.5
2.3
1.2
0.0
4.3
3.2
2.2
1.1
0.0
3.8
2.9
1.9
1.0
0.0
3.4
2.6
1.7
0.9
0.0
3.0
2.3
1.5
0.8
0.0
2.6
2.0
1.3
0.7
0.0
2.2
1.7
1.1
0.6
0.0
11.2
8.4
5.6
2.8
0.0
9.2
6.9
4.5
2.3
0.0
8.4
6.3
4.1
2.1
0.0
7.4
5.6
3.7
1.9
0.0
6.7
5.1
3.3
1.7
0.0
Approx.
Marine
Cranking
Amps
600
500
400
300
N/A
N/A
N/A
N/A
N/A
Approx.
Cold
Cranking
Amps
750
550
400
300
200
N/A
N/A
N/A
N/A
N/A
Ampere
Hours
66
61
56
51
46
41
36
31
26
135
110
100
90
80
Reserve
Capacity
(Minutes)
100
90
80
70
60
50
40
30
20
N/A
N/A
N/A
N/A
N/A
DEEP CYCLE*
HOURS TO CHARGE
Table 6.
Length of Charge Time Chart 2 Amps
BATTERY RATINGS
HOURS
TO CHARGE @ 2 AMPS
for the percent-of-charge now in the battery
0%
25%
50%
75%
100%
41.3
30.9
20.6
10.3
0.0
38.1
28.6
19.1
9.5
0.0
35.0
26.3
17.5
8.8
0.0
31.9
23.9
15.9
8.0
0.0
28.8
21.6
14.4
7.2
0.0
25.6
19.2
12.8
6.4
0.0
22.5
16.9
11.3
5.6
0.0
19.4
14.5
9.7
4.8
0.0
16.3
12.2
8.1
4.1
0.0
84.4
63.3
42.2
21.1
0.0
68.8
51.6
34.4
17.2
0.0
62.5
46.9
31.3
15.6
0.0
56.3
42.2
28.1
14.1
0.0
50.0
37.5
25.0
12.5
0.0
Approx.
Marine
Cranking
Amps
600
500
400
300
N/A
N/A
N/A
N/A
N/A
Approx.
Cold
Cranking
Amps
750
550
400
300
200
N/A
N/A
N/A
N/A
N/A
Ampere
Hours
66
61
56
51
46
41
36
31
26
135
110
100
90
80
Reserve
Capacity
(Minutes)
100
90
80
70
60
50
40
30
20
N/A
N/A
N/A
N/A
N/A
DEEP CYCLE*
HOURS TO CHARGE
