Battery Open Circuit Voltage Test (Ocv); Battery Load Test; Battery Specific Gravity Test - Polaris 850 MATRYX INDY XC 129 2021 Manual

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.
LEAD ACID
STATE OF CONVENTIONAL
CHARGE / DRY SHIPPED
AGM
100% Charged 12.70V
75% Charged
12.50V
50% Charged
12.20V
25% Charged
12.0V
0% Charged
less than 11.9V

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.
9850064 R03 - 2021 650 / 850 Matryx Trail Performance / Crossover Snowmobile Service Manual
© Copyright Polaris Inc.

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
LOW
100% Charged 12.60V
MAINTENANCE
75% Charged
13.0V
50% Charged
12.80V
25% Charged
12.50V
0% Charged
12.20V
less than 12.0V
STATE OF
CHARGE*
100% Charged 1.265
75% Charged
50% Charged
25% Charged
0% Charged
* Measurement at 80° F
Subtract .01 from the specific gravity reading at 40° F
BATTERY / ELECTRICAL
LEAD ACID
CONVENTIONAL LOW
/ DRY SHIPPED MAINTENANCE
AGM
12.70V
12.40V 12.50V
12.10V 12.20V
11.90V 12.0V
less than 11.80V Less than 11.90V
LEAD ACID
CONVENTIONAL LOW
/ DRY SHIPPED MAINTENANCE
AGM
1.275
1.210 1.225
1.160 1.175
1.120 1.135
less than 1.100 Less than 1.115
NOTICE
10
10.51