Sony GV-300 - Manual (Page 8)

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Have sufficient battery pack power to perform 2 or 3 times
the amount of recording that you plan to do.
“Battery life" as indicated in the instruction manual or cata­
logue of the video TV recorder is measured by the continuous
use of the video TV recorder, at room temperature, using a fully
charged battery.
Fast winding or rewinding tape operations consumes much
more battery power than normal tape trans|X>rt operation. Con­
sequently, battery life becomes shorter when these operations
are performed frequently.
Battery life is shorter in a cold climate.
Cold climates reduce the efficiency of a battery and cause it to run out more quickly.
When to replace the rechargsabla battery pack
When the battery pack is exhausted, the POWER lamp (during
recording, the “BATTERY DOWN’’ indication on the screen as
well) starts blinking slowly about five minutes before the battery
pack is discharged.
Replace the battery when the blinking changes from slow to
fast, and the "BATTERY DOWN" indication starts blinking
rapidly.
Turn off the power of the video TV recorder before replacing the
battery. While replacing the battery, keep the cassette inside
Ihe cassette holder When the battery has been replaced.
recording can be resumed smoothly without any picture
distortion
Notes on battery exhaustion when a camera is connected
When the battery is exhausted, the tally lamp (red) displayed in the viewfinder of the camera
starts blinking, and the power goes off automaticaily. Replace the battery pack with a fully
charged one when the blinking starts.
NM m on Charging
Before using the battery pack, charge it sufficiently. A brand-new battery pack is not charged.
Recharge the battery pack when It Is fully exhausted.
• If the operation is completed before the BATTERY DOWN indication on the screen or POWER
lamp starts blinking, it is recommended that you discharge the battery pack by playing back a
tape until the BATTERY DOWN indicator or the POWER lamp starts blinking rapidly.
• Do not recharge the battery pack before it has been discharged completely. Repeated charg­
ing while some capacity remains will reduce the battery capacity, However, the original battery
capacity can be recovered if you fully discharge and fully charge the battery pack again.
If the terminals (metal parts on the back) are soiled, the battery life will become shorter. When
the terminals are soiled, or when the battery pack has not been used for a long time, repeatedly
attach and remove it several times. This will improve the contact of the batterypack and the
video TV recorder. Also. wi[>e the + and - terminals with a soft cloth or paper.
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Battery pack care
• Remove the battery pack from the video TV recorder after use, and keep it in a cool place.
When the battery pack is installed on a video TV recorder, a small amount of current flows to
the recorder even if the POWER switch is turned off. This causes overdischarge and,
consequently, shortens the life of the battery.
• The battery pack is always discharging • even when it is not in use. Thus, the battery should be
charged before each use.
How to use the switch on the battery pack
Use this switch as a reminder of the charging condition. Set the
switch to the‘‘no mark" position when the charging iscompleted.
Set the switch to the "red mark" position when the battery has
been discharged.
How many times can the battery pack be recharged
It can be fully charged and discharged about 500 times under normal temperatures. If the
BATTERY DOWN indication blinks rapidly just after turning on the recorder, even though a fully
charged battery pack has been installed, replace the battery pack with a brand new one.
Charging temperature
Lower temperatures require a longer charging time.
Charging under a temperature ranging from IC’C to ЗО^С (SO^F to 86 ^F) is recommended.
Why the battery pack heats up
While the battery pack is being charged or used, a chemical change occurs inside the battery
pack which generates electric energy. Consequently, the battery pack becomes warm, but this is
not dangerous.
Carrying the battery pack
If the + and - terminals are short-circuited with a piece of metal, the battery heat up abnormally.
This is very dangerous. Never put an uncovered battery pack in a pocket together with a key
holder or other metal object.
If the battery pack Is not used for a long time (about 1 year)
Charge it again, but in this case the battery life will be shorter than normal. After several charg­
ing and discharging cycles, the battery life will recover its original capacity.
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