Caution On Lithium-Ion Battery - Hitachi GP 10DL Handling Instructions Manual

– Always use eye and ear protection. Other personal protective equipment such as
dust mask, gloves, helmet and apron should be worn;
– Pay attention to the wheel that continues to rotate after the tool is switched off .
– Always charge the battery at a temperature of 0 – 40°C.
A temperature of less than 0°C will result in over charging which is dangerous. The
battery cannot be charged at a temperature greater than 40°C.
The most suitable temperature for charging is that of 20 – 25°C.
– Do not use the charger continuously.
When one charging is completed, leave the charger for about 15 minutes before
the next charging of battery.
– Do not allow foreign matter to enter the hole for connecting the battery.
– Never disassemble the battery and charger.
– Never short-circuit the battery.
Short-circuiting the battery will cause a great electric current and overheat. It
results in burn or damage to the battery.
– Do not dispose of the battery in fi re.
If the battery burnt, it may explode.
– When drilling in wall, fl oor or ceiling, check for buried electric power cord, etc.
– Do not insert object into the air ventilation slots of the charger.
Inserting metal objects or infl ammables into the charger air ventilation slots will
result in electrical shock hazard or damaged charger.
– Bring the battery to the shop from which it was purchased as soon as the post-
charging battery life becomes too short for practical use. Do not dispose of the
exhausted battery.
– Using an exhausted battery will damage the charger.

CAUTION ON LITHIUM-ION BATTERY

To extend the lifetime, the lithium-ion battery equips with the protection function to stop
the output.
In the cases of 1 to 3 described below, when using this product, even if you are pulling
the switch, the motor may stop. This is not the trouble but the result of protection
function.
1. When the battery power remaining runs out, the motor stops.
In such case, charge it up immediately.
2. If the tool is overloaded, the motor may stop. In this case, release the switch of tool
and eliminate causes of overloading. After that, you can use it again.
3. If the battery is overheated under overload work, the battery power may stop.
In this case, stop using the battery and let the battery cool. After that, you can use
it again.
Furthermore, please heed the following warning and caution.
WARNING
In order to prevent any battery leakage, heat generation, smoke emission, explosion
and ignition beforehand, please be sure to heed the following precautions.
29
English