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BATTERY REMOVAL/INSTALLATION

1.Battery removal

Turn the body upside down and hold it firmly. Then, open the plate assembly while pulling the slide lever. (Fig. 2) To remove the battery, pull it out while holding the body tightly. (Fig. 3)

2.Battery installation

Pay attention to the inserting direction of the battery, insert the battery, and close the plate assembly. When the plate assembly and the slide lever engage each other perfectly, there will be the sound of a click. (Fig. 4)

CHARGING

Before using the power tool, charge the battery as follows.

1.Connect the charger’s power cord to the receptacle. When the power cord is connected, the charger’s pilot lamp will blink in red. (At 1-second intervals.)

Table 1

2.Insert the battery into the charger.

Firmly insert the battery into the charger till it contacts the bottom of the charger after checking the polarities as shown in Fig. 5.

CAUTION:

◯If the battery is inserted in the reverse direction,

not only recharging will become impossible, but it may also cause problems in the charger such as a deformed recharging terminal.

3.Charging

When inserting a battery in the charger, charging will commence and the pilot lamp will light continuously in red.

When the battery becomes fully recharged, the pilot lamp will blink in red. (At 1-second intervals.) (See

Table 1)

(1)Pilot lamp indication

The indications of the pilot lamp will be as shown in Table 1, according to the condition of the charger or the rechargeable battery.

 

 

 

Indications of the pilot lamp

 

Before charging

Blinks

Lights for 0.5 seconds. Does not light for 0.5

 

 

(RED)

seconds. (off for 0.5 seconds)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

While charging

Lights

Lights continuously

 

 

(RED)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Charging complete

Blinks

Lights for 0.5 seconds. Does not light for 0.5

 

 

(RED)

seconds. (off for 0.5 seconds)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Charging impossible

Flikers

Lights for 0.1 seconds. Does not light for 0.1

Malfunction in the

 

(RED)

seconds. (off for 0.1 seconds)

battery or the charger

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Charging impossible

Lights

Lights continuously

The battery tempera-

 

(GREEN)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ture is high, making

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

recharging impossible.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

(2) Regarding the temperatures of the rechargeable

battery

The temperatures for rechargeable batteries are as

Table 3 Charging time (At 20°C)

Charger

shown in the table 2, and batteries that have become

Battery

UC24YF UC24YFA

hot should be cooled for a while before being

recharged.

Table 2

 

Temperatures at

Battery type

which the battery

 

can be recharged

EB24B

–5°C – 60°C

EB2430H

0°C – 45°C

EB24B

Approx. 60 min. Approx. 50 min.

EB2430H Approx. 90 min. Approx. 70 min.

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.

(3)Regarding recharging time

Depending on the combination of the charger and batteries, the charging time will become as shown in Table 3.

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

37

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Hitachi Koki USA DH 20DV manual Battery REMOVAL/INSTALLATION, Charging
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DH 20DV specifications

The Hitachi Koki USA DH 20DV is a powerful and versatile rotary hammer drill that caters to both professionals and DIY enthusiasts. Engineered for tough applications, this tool stands out for its combination of performance, durability, and advanced technology. Weighing in at just under 6.4 pounds, the DH 20DV strikes a balance between portability and power, making it easy to handle without compromising on performance.

One of the most notable features of the DH 20DV is its 2-mode operation, which allows users to switch between rotary hammer and hammer-only modes. This versatility makes it suitable for a wide range of tasks, from drilling into concrete and masonry to chipping away at tough materials. The powerful 7.0-amp motor delivers impressive impact energy to help users tackle even the most challenging projects with ease.

The ergonomic design of the DH 20DV ensures comfort during extended use. The integrated soft-grip handle provides added control, reducing user fatigue. Additionally, the 360-degree rotatable auxiliary handle enhances stability for precise drilling, allowing users to adjust the grip based on the specific job at hand.

Another key characteristic of this model is its variable speed control. With speeds reaching up to 1,100 RPM, users can easily adjust the drill to suit different applications. This feature, combined with a high-impact rate of 4,000 BPM, enables the DH 20DV to efficiently handle various materials, making it a valuable tool for electricians, plumbers, and general contractors.

The DH 20DV is also equipped with anti-vibration technology, minimizing vibrations during operation. This not only enhances user comfort but also improves accuracy, providing cleaner, more precise holes. The durable construction of the tool ensures longevity, with components built to withstand the rigors of tough job site conditions.

In summary, the Hitachi Koki USA DH 20DV is a robust and efficient rotary hammer drill engineered for performance and ease of use. With its dual-mode operation, powerful motor, ergonomic design, and advanced features, it stands as a reliable choice for professionals. Whether you're drilling into concrete or chipping away at tough materials, the DH 20DV is designed to meet your needs with exceptional reliability and power.
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