MacDon M205 2012, Operator'S Manual

Page: 172 / 230

MAINTENANCE AND SERVICING
169469/169470/169471
170
Revision E
7.10.1.3 Charging
CAUTION

Ventilate the area where batteries are
being charged.

Do not connect or disconnect live circuits.
To prevent sparks, turn off charger and
connect positive cable first. If charging
battery in windrower, disconnect
positive
battery cable before connecting charger
cable, then connect ground cable last,
away from battery.

Stop or cut back charging rate if battery
feels hot, or is venting electrolyte. Battery
temperature must not exceed 125

F
(52

C).

Follow all instructions and safety
precautions furnished by the battery
charger manufacturer including the
following:
o avoid battery explosion, do not
attempt to charge a frozen battery.
Allow it to warm up to room
temperature or at least 60
°F
(16 °C) before charging.
ii. Gel and AGM (Absorbed Glass
Mat) batteries require a
voltage-limited charger. Charging a
Gel or AGM battery on an ordinary
shop charger, even once, may
significantly shorten its life.
iii. Do not overcharge batteries.
Overcharging will shorten battery
life.
iv. Before charging, read the
manufacturer’s instructions for
proper hook up and use of battery
charger.
v. Turn off charger prior to hook up
to avoid dangerous sparks. Wear
proper eye protection.
vi. If the electrolyte is accessible,
verify that plates are covered
before charging. Distilled water
may be added after charging to
bring levels to proper height, then
charge for additional 30 minutes to
mix. If electrolyte levels are low,
but battery is not accessible,
remove battery from service.
vii. 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.
viii. Continue charging if there is no
change in voltage or current for a
period of two-hour and reduce the
rate as needed.
ix. If the battery case gets hot during
charging, spews large amount of
gasses, temporarily stop charging.
Table below shows the recommended rates and
times for battery charging.
Voltage
State
of
charge
Approx. Battery charging time*
to full charge at 80 °F (27 °C)
(Minutes)
Standard
battery
Maximum rate at (Amps)
6 12 50 30 20 10
6.3 12.6 100% FULL CHARGE
6.2 12.4 75% 20 35 48 90
6.1 12.2 50% 45 75 95 180
6.0 12.0 25% 65 115 145 280
5.9 11.8 0% 85 150 195 370
*Charging time depends upon battery capacity,
condition, age, temperature and efficiency of
charger.