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Hitachi UC24YFA Manual

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5
Rechargeable batteries Temperatures at which the battery can be recharged
EB7, EB9
EB12
-5°C – 40°C
EB7S, EB7G
EB9S, EB9G, EB9B, EB9M, EB924
EB12S, EB12G, EB12B, EB12M, EB1224 -5°C – 60°C
EB14S, EB1414, EB14B, EB1424, EB1814,
EB1820, EB18B, EB24B
EB9H, EB12H, EB14H, EB930H, EB1230H,
0°C – 45°C
EB1430H, EB1830H, EB2430H
(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 2
Table 3 Recharging time (approx. min.) at 20°C
: Ni-MH batteries
NOTE: The recharging time may vary according to the ambient temperature and the power supply voltage.
(3) Regarding recharging time
Table 3 shows the recharging time required according to the type of battery.
4. Disconnect the charger’s power cord from the
receptacle.
5. Hold the charger firmly and pull out the battery.
NOTE
Be sure to pull out the battery from the charger after use,
and then keep it.
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.
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 is charged while it is heated because
it has been left for a long time in a location subject
to direct sunlight or because the battery has just
been used, the pilot lamp of the charger lights up
green. In such a case, first let the battery cool, then
start charging.
Battery
voltage
(V)
Battery capacity (Ah)
1.3 Ah 1.4 Ah 1.7 Ah 2.0 Ah 2.2 Ah 2.4 Ah 3.0 Ah
7.2 V
EB7
35
min.
— —
EB7G 45
min
— ——— — —— —
EB7S
9.6 V
EB9
35
min.
— —
EB9G 45
min.
EB9B
50
min. EB9H 55
min. EB924 60
min. EB930H 70
min.
EB9S EB9M
12 V
EB12
35
min.
— —
EB12G 45
min.
EB12B
50
min. EB12H 55
min. EB1224 60
min. EB1230H 70
min.
EB12S EB12M
14.4 V
EB14S 35
min. EB1414 40
min.
——EB14B 50
min. EB14H 55
min. EB1424 60
min. EB1430H 70 min.
18 V
EB1820
——EB1814 40
min. ——
EB18B
50
min. —— — — EB1830H 70
min.
24 V
——
—
—
——EB24B 50
min. ——
—
— EB2430H 70
min.
… 6 …


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