Toro Reelmaster 3550-D Service Manual page 224

Battery Charging
To minimize possible damage to the battery and allow
the battery to be fully charged, the slow charging meth-
od is presented here. This charging method can be ac-
complished with a constant current battery charger.
WARNING
Charge battery in a well ventilated place so
gasses produced while charging can dissipate.
Since the gases are explosive, keep open
flames and electrical sparks away from the bat-
tery; do not smoke. Nausea may result if the
gases are inhaled. Unplug charger from electri-
cal outlet before connecting or disconnecting
charger leads to or from battery posts.
CAUTION
Follow the battery charger manufacturer's
instructions when using a battery charger.
1. Determine the battery charge level from its open cir-
cuit voltage.
Battery Charge Level
100%
75%
50%
25%
0%
2. Determine the charging time and rate using the bat-
tery charger manufacturer's instructions or the fol-
lowing table.
3. Following the battery charger manufacturer's
instructions, connect the charger cables to the battery.
Make sure a good connection is made.
4. Charge the battery following the battery charger
manufacturer's instructions.
5. Occasionally check the temperature of the battery. If
the temperature exceeds 125F (52C), the charging rate
must be lowered or temporarily stopped.
Electrical System
Open Circuit Voltage
12.68
12.45
12.24
12.06
11.89
Page 5 − 54
Battery Battery Charge Level
Reserve (Percent of Fully Charged)
Capacity
75%
(Minutes)
80 or less 3.8 hrs 7.5 hrs
@
3 amps 3 amps
81 to 125 5.3 hrs 10.5 hrs
@
4 amps 4 amps
126 to 5.5 hrs 11 hrs
170 @
5 amps 5 amps
171 to 5.8 hrs 11.5 hrs
250 @
6 amps 6 amps
above 6 hrs
250 @
10 amps 10 amps
CAUTION
Do not charge a frozen battery because it can ex-
plode and cause injury. Let the battery warm to
60F (16C) before connecting to a charger.
Charge the battery in a well−ventilated place to
dissipate gases produced from charging. These
gases are explosive; keep open flame and elec-
trical spark away from the battery. Do not smoke.
Nausea may result if the gases are inhaled. Un-
plug the charger from the electrical outlet before
connecting or disconnecting the charger leads
from the battery posts.
Reelmaster 3550−D/3555−D/3575−D
50% 25% 0%
11.3 hrs 15 hrs
@ @ @
3 amps 3 amps
15.8 hrs 21 hrs
@ @ @
4 amps 4 amps
16.5 hrs 22 hrs
@ @ @
5 amps 5 amps
17.3 hrs 23 hrs
@ @ @
6 amps 6 amps
12 hrs 18 hrs 24 hrs
@ @ @
10 amps 10 amps