Manual Hitachi DH24DVA (page 12 of 90) (English, German, Dutch, French, Italian, Portuguese, Spanish)

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(2) Regarding the temperatures of the rechargeable

battery.

The temperatures for rechargeable batteries are as

shown in the table 2, and batteries that have become

hot should be cooled for a while before being

recharged.

Table 2

(3) Regarding recharging time

Depending on the type of the battery, the charging

time will become as shown in Table 3.

Table 3 Charging time (At 20°C)

NOTE: The charging time may vary according to ambient

temperature and power source voltage.

4. Disconnect the charger’s power cord from the

receptacle.

5. Hold the charger firmly and pull out the battery.

NOTE:

After operation, pull out batteries from the charger

first, and then keep the batteries properly.

Regarding electric discharge in case of new batteries,

etc.

As the internal chemical substance of new batteries and

batteries that have not been used for an extended period

is not activated, the electric discharge might be low when

using them the first and second time. This is a temporary

phenomenon, and normal time required for recharging

will be restored by recharging the batteries 2–3 times.

Lights for 0.5 seconds. Does not light for 0.5

seconds. (off for 0.5 seconds)

Lights continuously

Lights for 0.5 seconds. Does not light for 0.5

seconds. (off for 0.5 seconds)

Lights for 0.1 seconds. Does not light for 0.1

seconds. (off for 0.1 seconds)

Lights continuously

Before charging

While charging

Charging complete

Charging impossible

Blinks

(RED)

Lights

(RED)

Blinks

(RED)

Lights

(GREEN)

Malfunction in the

battery or the charger

The battery temperature

is high, making recharg-

ing impossible.

Table 1

Indications of the pilot lamp

Temperatures at

Battery type which the battery

can be recharged

EB2420 –5°C – 60°C

EB2430HA, EB2433X 0°C – 45°C

How to make the batteries perform longer

(1) Recharge the batteries before they become

completely exhausted.

When you feel that the power of the tool becomes

weaker, stop using the tool and recharge its battery.

If you continue to use the tool and exhaust the

electric current, the battery may be damaged and

its life will become shorter.

(2) Avoid recharging at high temperatures.

A rechargeable battery will be hot immediately after

use. If such a battery is recharged immediately after

use, its internal chemical substance will deteriorate,

and the battery life will be shortened. Leave the

battery and recharge it after it has cooled for a

while.

CAUTION:

⅜ If the battery has been heated right after operation

(or due to sunlight, etc.), the charger’s pilot lamp

may not light in red. In such a case, first let the

battery cool, then start charging.

⅜ When the pilot lamp flikers in red (at 0.2–second

intervals), check for and take out any foreign objects

in the charger’s battery installation hole. If there are

no foreign objects, it is probable that the battery

or charger is malfunctioning. Take it to your

authorized Service Center.

⅜ Since the built-in micro computer takes about 3

seconds to confirm that the battery being charged

with UC24YFB is taken out, wait for a minimum of

3 seconds before reinserting it to continue charging.

If the battery is reinserted within 3 seconds, the

battery may not be properly charged.

PRIOR TO OPERATION

1. Mounting the drill bit (Fig. 4, 5)

CAUTION:

To prevent accidents, make sure to turn the switch

off.

NOTE:

When using tools such as drill bits, etc., make sure

to use the genuine parts designated by our company.

Battery type Recharging time

EB2420 Approx. 50 min.

EB2430HA Approx. 70 min.

EB2433X Approx. 75 min.

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Hitachi DH24DVA Manual

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