Page 712 - Manual Oficina Polaris Sportsman 570 2014 a 2016

P. 712

ELECTRICAL

5. Reinstall the holder strap. STATE OF CONVENTIONAL LOW
CHARGE* LEAD - ACID MAINTENANCE
CONVENTIONAL BATTERY TESTING 100% 1.265 1.275
Whenever a service complaint is related to either the Charged 1.210 1.225
starting or charging systems, the battery should be 75% Charged 1.160 1.175
checked first.
50% Charged 1.120 1.135
Following are three tests which can easily be made on a
battery to determine its condition: OCV Test, Specific 25% Charged less than 1.100 Less than 1.115
Gravity Test and Load Test. 0% Charged – –

CONVENTIONAL BATTERY OCV - OPEN * Measurement at 80° F
CIRCUIT VOLTAGE TEST NOTE
Battery voltage should be checked with a digital Subtract .01 from the specific gravity reading at 40° F
multitester. Readings of 12.6 volts or less require further
battery testing and charging. See charts and Load Test
below.
BATTERY LOAD TEST
NOTE
NOTE
Lead-acid batteries should be kept at or near a full
charge as possible. Electrolyte level should be kept This test can only be performed on machines with
between the low and full marks. If the battery is stored electric starters. This test cannot be performed with an
or used in a partially charged condition, or with low engine or starting system that is not working properly.
electrolyte levels, hard crystal sulfation will form on the
plates, reducing the efficiency and service life of the A battery may indicate a full charge condition in the OCV
battery. test and the specific gravity test, but still may not have
the storage capacity necessary to properly function in the
electrical system. For this reason, a battery capacity or
BATTERY SPECIFIC GRAVITY TEST load test should be conducted whenever poor battery
performance is encountered. To perform this test, hook a
A tool such as a Battery Hydrometer (PN 2870836) can multitester to the battery in the same manner as was
be used to measure electrolyte strength or specific done in the OCV test. The reading should be 12.6 volts
gravity. As the battery goes through the charge/ or greater. Engage the starter and observe the battery
discharge cycle, the electrolyte goes from a heavy (more voltage while cranking the engine. Continue the test for
acidic) state at full charge to a light (more water) state 15 seconds. During cranking the observed voltage
when discharged. The hydrometer can measure state of should not drop below 9.5 volts. If the beginning voltage
charge and differences between cells in a multi-cell is 12.6 volts or higher and the cranking voltage drops
battery. Readings of 1.270 or greater should be observed below 9.5 volts during the test, replace the battery.
in a fully charged battery. Differences of more than .025
between the lowest and highest cell readings indicate a
need to replace the battery. OFF SEASON STORAGE
To prevent battery damage during extended periods of
LOW
STATE OF CONVENTIONAL MAINTE- non-use, the following basic battery maintenance items
CHARGE LEAD - ACID must be performed:
NANCE
• Remove the battery from the machine and wash the
100% 12.60V 12.70V
case and battery tray with a mild solution of baking
Charged 12.40V 12.50V
soda and water. Rinse with lots of fresh water after
75% Charged 12.10V 12.20V cleaning. NOTE: Do not get any of the baking soda
into the battery or the acid will be neutralized.
50% Charged 11.90V 12.0V
• Using a wire brush or knife, remove any corrosion from
Less than
25% Charged less than 11.80V the cables and terminals.
11.90V • Make sure that the electrolyte is at the proper level.
0% Charged – – Add distilled water if necessary.
• Charge at a rate no greater than 1/10 of the battery's
amp/hr capacity until the electrolyte's specific gravity
reaches 1.270 or greater.

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