11
BATTERY OPERATION
The LC103 is designed to operate as a completely
portable unit with the optional BY289 rechargeable
battery installed. The operation of the LC103 when it is
battery powered is the same as when it is AC powered
except that the display will dim slightly to reduce the
power consumption and increase battery life. The length
of time the LC103 will operate before the battery needs
recharging depends on several factors: 1. the test
functions used; 2. temperature; 3. battery age.
Leakage tests place the heaviest current drain on the
battery -- greater currents result in shorter battery life
between charging. Value tests place the least drain on
the battery. The LC103 provides approximately 2 hours
of typical operation using battery power. These times, of
course, will vary with temperature and battery age.
As the temperature of the battery decreases, its capacity
also decreases. The operating time between recharging
decreases at the rate of approximately 1 hour for every
20
o
F drop in temperature below 70
o
F. The BY289
battery is a sealed, lead acid type that requires no
maintenance other than recharging. As a battery ages, it
will require more frequent recharging. If used properly,
the BY289 will provide several years of service before
needing replacement.
You can maximize the lifetime of the BY289 several
ways:
1. Never allow the battery to deeply discharge. The
LC103 has a built-in battery test and low battery shut
off circuitry. Check the remaining charge periodically
and recharge the battery before the low battery circuit
shuts the unit off.
2. Keep the battery fully charged. The BY289 will not
be harmed if it is left installed in the LC103 during
AC operation. Instead, this will keep the battery fresh
and ready for use and will actually lengthen its useful
lifetime.
3. Recharge the battery before using it if it has sat idle
for more than a couple of weeks. Lead acid batteries
may loose some of their charge if they sit idle for a
period of time.
———————— WARNING —————————
Observe these precautions when using lead acid
batteries:
1. Do not dispose of old lead-acid batteries in fire. This
may cause them to burst, spraying acid through the air.
2. Do not short the “+” and “-“ terminals together. This
will burn open internal connections, making the
battery useless.
3. Do not charge 12 volt lead-acid batteries with a voltage
greater than 13.8 VDC. High charging voltage may
damage the battery or cause it to explode.
4. Do not drop the battery. While lead-acid batteries are
well sealed, they may break if dropped or subjected to
a strong mechanical shock. If the battery does break
and the jelled electrolyte leaks out, neutralize the acid
with baking soda and water.
5. Do not charge the battery below 0
o
C or above +40
o
C.
(32
o
to 104
o
F).
———————— ATTENTION ————————
Pernez ces precautions lorsque vous utilisez des batteries á
acide de plumb:
1. Ne pas jeter les batteries á acide de plumbs dans le feu.
Cela peut entrainer leur explosion et des jets d’acides.
2. Ne pas court-circuiter le “+” et le “-“. Cela grille
l’intérieur de la batterie et rend la batterie inutilisable.
3. Ne pas charger la batterie 12V avec un voltage
supérieur a 13,8 V. Un voltage trop élevé peut entrainer
l’explosion de la batterie ou peut l’abimer.
4. Ne pas laisser tomber la batterie. Méme si les batteries
á acide de plomb sont hermétiques, elles peuvent se
casser si on les laisse tomber ou on les soumis a un
schock mechanique important. Si la batterie se casse et
le produit se repent, neutralisez l’acide avec de l’eau et
du bicarbonate de soude.
5. Ne pas charger la batterie en-dessous de 0° C ou au-
dessus de +40° C. (32° - 104° F).
Fig. 6: The optional BY289 is installed in the LC103
for portable operation.
To install the optional BY289 Battery:
1. Open the BATTERY COMPARTMENT COVER
located on the rear of the unit by unscrewing the
thumbscrew. Fold the cover down on its hinge.
2. Slide the battery end that does not have the connector
attached into the battery compartment. (The wire
should be facing out after the battery is in place.)
3. Connect the plug from the battery to the jack inside
the battery compartment. Close the battery
compartment cover and tighten the thumbscrew to
hold the door and battery in place.
Note: Recharge the BY289 overnight before using it for
the first time.