Hitachi RB 14DL Technical Data And Service Manual page 9

(2) Do not insert a foreign object into body.
A foreign object inserted through a hole may cause a failure. Please instruct customers to never insert a
foreign object into body.
(3) Avoid "Locking" of the motor.
Locking of the motor will cause an overload current that could result in burning of the motor and/or rapid
deterioration of the battery. Salespersons should advise the customer to immediately release the switch
and stop operation if the motor becomes locked.
(4) Variation in amount of work possible per charge
Although the nominal chargeable capacity of the storage batteries Types BCL 1430, EBL 1430 and
EBM 1830 is 3.0 Ah, the actual capacity may vary within 10% of that value depending on the ambient
temperature during use and charging, and the number of times the batteries have been recharged. It
should be noted that other factors which may have a bearing on the amount of work possible per charge
are the working conditions and the operational skill of the user.
B. Suggestions and precautions for efficient use of the charger and the storage battery
If the Types BCL 1430, EBL 1430 and EBM 1830 storage batteries are exposed to direct sunlight for an
extended period or if the tool has just been operated for a long time, charging may not be possible if the
temperature of the battery is above 40°C (104°F). In such a case, the customer should be advised to place
the battery in a shaded area with a good airflow, and allow sufficient cooling before recharging. This
phenomenon is common to all existing batteries and chargers which employ temperature sensitive
overcharge protection devices. The cooling time required before recharging can be accomplished varies
from a few minutes to about 45 minutes, depending on the load, duration of use, and ambient temperature.
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