MacDon M205 - Page 371

214603 351 Revision A
Table 5.1 Voltage Chart
Voltage
State of
Charge
(%)
Approximate Battery
Charging Time
30
to Full
Charge at 27°C/80°F
(Minutes)
Standard
Battery
Maximum Rate at
(Amps)
12 Volts 50 30 20 10
12.6 100
— FULL CHARGE —
12.4
75
20 35 48 90
12.2 50 45
75
95 180
12.0 25 65 115 145 280
11.8 0 85 150 195 370
WARNING
• Gel and AGM (Absorbed Glass Mat) batteries require
a voltage-limited charger. Charging a Gel or AGM
battery on a typical shop charger—even one time—
may greatly shorten its life.
• If the electrolyte is accessible, verify that plates are
covered before beginning to charge. At the end of
charge, add distilled water as needed to bring levels
to the proper height. If water is added, charge for an
additional 30 minutes to mix. If electrolyte levels are
low, but battery is not accessible, remove battery
from service.
CAUTION
Follow all instructions and precautions furnished by the battery charger manufacturer, including the
following:
• Charge at recommended rates and times.
• Turn off charger prior to hook up to avoid dangerous sparks. Wear proper eye protection.
• Reduce charge rate if the terminal voltage is higher than 16.0 volts while charging. The maximum
charge rate in amperes should NOT exceed 1/3 of the battery’s reserve capacity minute rating.
• Continue charging if there is no change in voltage or current for a period of two hour and reduce the
rate as needed.
• If the battery case gets hot during charging or spews large amount of gasses, temporarily stop
charging.
IMPORTANT:
NEVER overcharge batteries. Excessive charging will shorten battery life.
To charge battery, follow these steps:
DANGER
To avoid bodily injury or death from unexpected startup of the machine, always stop the engine and
remove the key from the ignition before leaving the operator’s seat for any reason.
1. Stop the engine and remove the key.
2. Move platform on right cab-forward side of machine to open position to allow access to the batteries. Refer to
5.3.1 Opening Platforms (Standard Position), page 288.
MAINTENANCE AND SERVICING
30. Charging time depends upon battery capacity, condition, age, temperature, and efficiency of charger.