Charging Battery - MacDon M2170NT Operator's Manual

Charging Battery

Charging a battery can be dangerous, if the proper procedures are not followed. Familiarize yourself with this information
before attempting to charge a battery.
CAUTION
• Ventilate the area where the batteries are being charged.
• Do NOT charge a frozen battery. Warm it to 16°C (60°F)
before charging.
• Do NOT connect or disconnect live circuits. To prevent
sparks, turn off the charger and connect the positive cable
first. PROTECT YOUR EYES.
• If charging the battery in the windrower, disconnect the
POSITIVE battery cable before connecting the charger cable,
then connect the ground cable last, away from the battery.
• Stop or cut back the charging rate if the battery feels hot, or
is venting electrolyte. The battery temperature must NOT
exceed 52°C (125°F).
• The maximum charge rate in amperes should be NO MORE
than 1/3 of the battery's reserve capacity minute rating. If
the terminal voltage exceeds 16.0 volts while charging,
reduce the charge rate.
• Continue charging and reduce the rate as needed until a
two-hour period results in no increase in voltage or
decrease in current.
Table 6.8 Voltage Chart
OCV 24
12.6
12.4
12.2
12.0
11.8
24. Open circuit voltage with no charging/discharging for 8 hours or more.
25. Charging time depends on the battery capacity, condition, age, temperature, and the efficiency of the charger.
262171
MAINTENANCE AND SERVICING
50 Amps
State of Charge
(%)
100
75
50
25
0
375
Figure 6.143: Battery Charging
30 Amps
Approximate battery charging time (minutes)
to full charge at 27°C/80°F.
— Fully charged —
20 35
45 75
65 115
85 150
20 Amps 10 Amps
25
48 90
95 180
145 280
195 370
Revision A