Multi Pro 5700 - Toro

H. Using the table below, determine the minimum
voltage for the cell temperature reading:
Minimum
Voltage
I. If the test voltage is below the minimum, replace
the battery. If the test voltage is at or above the minimum,
return the battery to service.
Battery Charging
Battery Electrolyte
Temperature
9.6 70 o F (and up) 21.1 o C (and up)
9.5 60 o F 15.6 o C
9.4 50 o F 10.0 o C
9.3 40 o F 4.4 o C
9.1 30 o F –1.1 o C
8.9 20 o F –6.7 o C
8.7 10 o F –12.2 o C
8.5 0 o F –17.8 o C
To minimize possible damage to the battery and allow
the battery to be fully charged, the slow charging method
is presented here. This charging method can be accomplished
with a constant current battery charger
which is available in most shops.
CAUTION
Follow the manufacturer’s instructions when using
a battery charger.
NOTE: Using specific gravity of the battery cells is the
most accurate method of determining battery condition.
1. Determine the battery charge level from either its
specific gravity or open circuit voltage.
Battery Charge
Level
Specific
Gravity
Open Circuit
Voltage
100% 1.265 12.68
75% 1.225 12.45
50% 1.190 12.24
25% 1.155 12.06
0% 1.120 11.89
2. Determine the charging time and rate using the
manufacturer’s battery charger instructions or the
following table.
Battery
Reserve
Capacity
(Minutes)
Battery Charge Level
(Percent of Fully Charged)
75% 50% 25% 0%
80 or less 3.8 hrs 7.5 hrs 11.3 hrs 15 hrs
@ @ @ @
3 amps 3 amps 3 amps 3 amps
81 to 125 5.3 hrs 10.5 hrs 15.8 hrs 21 hrs
@ @ @ @
4 amps 4 amps 4 amps 4 amps
126 to 5.5 hrs 11 hrs 16.5 hrs 22 hrs
170 @ @ @ @
5 amps 5 amps 5 amps 5 amps
171 to 5.8 hrs 11.5 hrs 17.3 hrs 23 hrs
250 @ @ @ @
6 amps 6 amps 6 amps 6 amps
above 6 hrs 12 hrs 18 hrs 24 hrs
250 @ @ @ @
10 amps 10 amps 10 amps 10 amps
CAUTION
Do not charge a frozen battery because it can explode
and cause injury. Let the battery warm to
60 o F (15.5 o C) 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 electrical
spark away from the battery. Do not smoke.
Nausea may result if the gases are inhaled. Unplug
the charger from the electrical outlet before
connecting or disconnecting the charger leads
from the battery posts.
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
electrolyte. If the temperature exceeds 125 o F (51.6 o C)
or the electrolyte is violently gassing or spewing, the
charging rate must be lowered or temporarily stopped.
6. Three hours prior to the end of the charging, measure
the specific gravity of a battery cell once per hour.
The battery is fully charged when the cells are gassing
freely at a low charging rate and there is less than a
0.003 change in specific gravity for three consecutive
readings.
Electrical
System
Multi Pro 5700–D Page 5 – 33 Electrical System