25
Battery Testing
BATTERIES: ELECTRIC VEHICLES
CORRECTED SPECIFIC GRAVITY
VEHICLE
NO.
BATTERY
NO.
ELECTROLYTE
TEMPERATURE
CORRECTION
FACTOR
CELL 1
CELL 2
CELL 3
REQUIRED
ACTION
12
1
20 °F (-6.6 °C)
– 0.024
1.275 –0.024
= 1.251
1.280 – 0.024
= 1.256
1.280 – 0.024
= 1.256
Sound Battery –
Fully Charged
35
6
90 °F (32.2 °C)
+ 0.004
1.155 + 0.004
= 1.159
1.165 + 0.004
= 1.169
1.160 + 0.004
= 1.164
Discharged
Battery –
Recharge
54
3
50 °F (10 °C)
– 0.012
1.260 –0.012
= 1.248
1.200 – 0.012
= 1.188
1.270 – 0.012
= 1.258
Bad no. 2 Cell
69
5
80 °F (26.7 °C)
0.000
1.250 – 0 =
1.250
1.255 – 0 =
1.255
1.230 – 0 =
1.230
Weak no. 3 Cell –
Catch-up Charge
38
2
100 °F (37.8 °C)
+ 0.008
1.200 + 0.008
= 1.208
1.180 + 0.008
= 1.188
1.170 + 0.008
= 1.178
Discharged
Battery –
Recharge and
Recheck
22
4
80 °F (26.7 °C)
0.000
1.240 – 0 =
1.240
1.245 – 0
= 1.245
Float does
not rise
no.3 Cell Dead –
Replace Battery
DISCHARGE TEST
If the previous tests have failed to identify the problem, conduct a discharge test. The discharge test comes closest
to simulating actual vehicle operating conditions by continuously drawing current from the batteries until voltage
drops to 42.0 volts.
The discharge test is the hardest test on the batteries and the most time-consuming to perform. Use the battery
discharge tester (CCI P/N 101831901).
Performing the Discharge Test
1.
Be sure the batteries are fully charged and that the electrolyte level is correct in all cells.
2.
Connect the tester leads to the positive (+) post of battery no.1 and negative (–) post of battery no. 8.
3.
Check and record the electrolyte temperature of the battery packs. Check cell no. 2 (second cell from positive
post) in each battery.
4.
Reset discharge machine and turn the tester ON.
5.
When the batteries have been discharging for approximately 60 minutes, set the discharge machine to function 3
and check battery set voltage. Check voltage every 10 minutes throughout the rest of the test. As soon as the
battery set voltage reaches 0.5 volts above the shut-off point (42.0 volts), use a multimeter to measure individual
battery voltages. Measure and record the voltage of each battery to the nearest 0.01 volt.
See following NOTE.
NOTE:
The tester will shut off automatically when shut-off voltage is reached.
Interpreting Discharge Test Results
1.
If discharge time is 60 minutes or higher, the problem is not with the batteries.
2.
If discharge times are low (less than 60 minutes), replace batteries below 5.0 volts.
Page 25-10
2007-2009 Turf 252, Carryall 252 and XRT 900 Maintenance and Service Manual
Содержание CARRYALL 252 2007
Страница 2: ......
Страница 4: ......
Страница 42: ......
Страница 100: ......
Страница 112: ......
Страница 202: ......
Страница 290: ......
Страница 330: ......
Страница 458: ......
Страница 476: ......
Страница 490: ......
Страница 506: ......
Страница 518: ......
Страница 524: ......
Страница 533: ......
Страница 535: ......
Страница 536: ......