Sears 200.713201 - Manual (Page 11)

11
SAFETY
TROUBLESHOOTING
MAINTENANCE
OPERATION
PARTS
CALCULATING CHARGE TIME
Battery Rating Method
Use the following table to more accurately determine the time it will take to fully
charge a battery that is initially at 50% State-of-Charge. Identify your battery type and
Voltmeter Method
To find the time needed to fully charge your battery, determine the battery’s charge
level with a voltmeter or electronic State-of-ChargeTester. Use the table below to
convert Voltmeter and State-of-Charge readings at room temperature to the appro-
priate Charge Factor. Then use the formulas that follow the table to determine the
approximate Charge Time.
its associated Charge Time in the table. Common battery types are:
• Small batteries, motorcycles, garden tractors, etc., are usually rated in Amp-Hours
(AH).
• Car and truck batteries, usually rated in Reserve Capacity (RC), Cold Cranking
Amps (CCA), or both.
• Marine, or deep cycle batteries, usually rated in either Amp-Hours or Reserve
Capacity (RC).
• NR means the charger setting is NOT RECOMMENDED.
• NA means not allowed. DO NOT charge at this setting
Charge Factor Table
Voltmeter Reading
State-of-Charge
Reading Charge Factor
12 Volt Battery
12.67
12.45
12.03
11.86
24 Volt Battery
24.90
25.34
24.06
23.72
100%
25%
100%
75%
0
0.75
1
0.25
12.25 24.50 50% 0.50
Motorcycle
200 - 315
315 - 550
550 - 1000
Marine and
40 - 60
60 - 85
85 -190
80
140
160
180
10 AMP
NA
NA
1 - 2
2 - 3
3 - 7
3
5
6
7
6
10
2 AMP
2 - 4
4 - 10
8 - 11
11 - 16
16 - 35
15
26
30
33
20
32
Car and
Charge-Time (Hours) Battery
Type
Charge Time Table for Batteries at 50% State-of-Charge
Battery Rating
and tractor
Truck
Deep Cycle
CCA RC 20 AMP 15 AMP
NA
NA
1 - 1½
1½ - 2
2 - 5
2
3½
4
4½
NR
NR
Gel Cell
NA
NA
¾ - 1
1 - 1½
1½ - 3½
1½
2½
3
3½
NR
NR
40
80
95
105
40
80
6 - 12
12 - 32
AH
390
650