Hitachi CR 18DMR instruction manual Battery overheated. Unable to charge

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(1)Lamp indications

This charger is equipped with a charge time lamp that indicates remaining charging time, and a charge status lamp that indicates battery status as shown in Table 4.

(a)Charging time

After charging commences, the charge time lamp lights red indicating 30 minutes, orange indicating 20 minutes, and green indicating 5 minutes until completion. When the battery is fully charged, the charge status lamp lights green, and the buzzer sounds continuously for 6 seconds.

(b)Overheat standby

When the battery is overheated, it cannot be charged, and the charge time lamp flashes red (in 0.6 second intervals). Leave the battery inserted in the charger, and charging will commence when the battery cools down.

(c)Charging impossible

When there is a malfunction with the battery or charger, the charge status lamp flashes orange rapidly (in 0.2 second intervals), and the buzzer sounds intermittently for 5 seconds.

Table 4 Lamp indications

		Lamp indications			Status lamp
	Charging time		Lights	Lights continuously	30 minutes until charging complete.
Charge	30 minutes		red
time	Charging time		Lights	Lights continuously	20 minutes until charging complete.
lamp	20 minutes		orange
(red/	Charging time		Lights	Lights continuously	5 minutes until charging complete.
orange/	5 minutes		green
green)	Overheat standby		Blinks	Lights for 0.3 seconds, off 0.3 seconds	Battery overheated. Unable to charge.
			red		(Charging will commence when battery cools.)
Charge	Before charging		Blinks	Lights for 0.5 seconds, off 0.5 seconds	Power cord is connected to
			red		receptacle.
status
lamp	Charging complete		Lights	Lights continuously
(red/			green
orange/	Charging		Blinks	Lights for 0.1 seconds, off 0.1 seconds	Battery or charger malfunction.
green)
	impossible		orange	■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■

(2)Regarding the temperature of the rechargeable battery

The temperatures for rechargeable batteries are as shown in the table below, and batteries that have become hot should be cooled for a while before being recharged.

Table 5 Recharging of batteries that have become hot

Rechargeable batteries	Temperatures at which the battery can be recharged
EB1820L	23°F — 131°F (–5°C — 55°C)
EB1830HL	23°F — 122°F (–5°C — 50°C)

4. Disconnect battery charger from the receptacle.

CAUTION:

Do not pull the plug out of the receptacle by pulling on the cord.

Make sure to grasp the plug when removing from receptacle to avoid damaging cord.

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