ZTS MBT-LA2 - Manual (Page 6)

the test results will be incorrect.
3) Make two tests, 5-10 seconds apart. This verifies
that the battery is stabilized and capable of consis-
tent power output under the pulse load.
4) Connect the tester’s clamps directly to the battery
terminals. Any extension or modification to the
tester’s lead wires can cause testing errors.
To insure accurate testing, use only ZTS lead
sets (clip or plier type).
5) Disconnect the battery from other circuits before
testing. A battery connected to a “float” charging
system may test higher than it does out of circuit
(stand alone). The MBT-LA2 is designed to test
batteries out of circuit only.
Temperature Compensation
SLA batteries exhibit a direct relationship between
temperature and their ability to deliver current or
maintain voltage under load. The actual capacity of a
SLA battery is a function of temperature and the rate
of discharge. For example, a battery will indicate a
lower state of charge, or lower remaining capacity, as
temperature decreases, and will indicate a higher state
of charge (SOC) as temperature increases.
The MBT-LA2 is designed to test SLA batteries whose
ambient temperature is between 50° - 85°F (10°-30° C).
The following chart shows the effect of temperature
on the test result. Referring to the chart on page 5,
notice that a battery whose SOC is 100% will produce
a test result of 100% at 68°F. This same batttery will
produce a test result between 80% and 60% when its
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