Polaris 850 PRO-RMK 155 2.6" QD 2021, Manual

Page: 663 / 747

10
9850060 R02 - 2020-2021 850 AXYS™ Long Track Snowmobile Service Manual
© Copyright Polaris Inc.
10.39
BATTERY OPEN CIRCUIT VOLTAGE TEST
(OCV)
Battery voltage should be checked with a digital
multimeter. Readings of 12.5 volts or less require further
battery testing and charging.
NOTICE
Lead Acid batteries should be kept at or near a full
charge as possible. If the battery is stored or used in a
partially charged condition, hard crystal sulfation will
form on the plates, reducing the efficiency and service
life of the battery.
Use a voltmeter or multimeter to test battery voltage.
STATE OF
CHARGE
LEAD ACID
CONVENTIONAL
/ DRY SHIPPED
AGM
LOW
MAINTENANCE
100% Charged 12.70V
13.0V
75% Charged
12.50V 12.80V
50% Charged
12.20V 12.50V
25% Charged
12.0V 12.20V
0% Charged
less than 11.9V less than 12.0V
BATTERY LOAD TEST
NOTICE
This test can only be performed on machines with
electric starters. This test cannot be performed with an
engine or starting system that is not working properly.
A battery may indicate a full charge condition in the OCV
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
load test should be conducted whenever poor battery
performance is encountered. To perform this test, hook a
multitester to the battery in the same manner as was
done in the OCV test. The reading should be 12.6 volts
or greater. Engage the starter and observe the battery
voltage while cranking the engine. Continue the test for
15 seconds. During cranking the observed voltage
should not drop below 9.5 volts. If the beginning voltage
is 12.6 volts or higher and the cranking voltage drops
below 9.5 volts during the test, replace the battery.
BATTERY SPECIFIC GRAVITY TEST
A tool such as a Battery Hydrometer (2870836) can be
used to measure electrolyte strength or specific gravity.
As the battery goes through the charge / discharge cycle,
the electrolyte goes from a heavy (more acidic) state at
full charge to a light (more water) state when discharged.
The hydrometer can measure state of charge and
differences between cells in a multi-cell battery.
Readings of 1.270 or greater should be observed in a
fully charged battery. Differences of more than .025
between the lowest and highest cell readings indicate a
need to replace the battery.
STATE OF
CHARGE
LEAD ACID
CONVENTIONAL
/ DRY SHIPPED
AGM
LOW
MAINTENANCE
100% Charged 12.60V
12.70V
75% Charged
12.40V 12.50V
50% Charged
12.10V 12.20V
25% Charged
11.90V 12.0V
0% Charged
less than 11.80V Less than 11.90V
STATE OF
CHARGE*
LEAD ACID
CONVENTIONAL
/ DRY SHIPPED
AGM
LOW
MAINTENANCE
100% Charged 1.265
1.275
75% Charged
1.210 1.225
50% Charged
1.160 1.175
25% Charged
1.120 1.135
0% Charged
less than 1.100 Less than 1.115
* Measurement at 80° F
NOTICE
Subtract .01 from the specific gravity reading at 40° F
BATTERY / ELECTRICAL