Questions And Answers On Model Uc 18Yml2 - Hitachi UC 18YML2 Technical Data And Service Manual

7. QUESTIONS AND ANSWERS ON THE MODEL UC 18YML2
Q1 What are typical charging methods?
A1 The most recent electronic charging methods are outlined below.
Voltage
Current
Charging time
The Model UC 18YML2
automatically stops recharging
upon the detection of stop current
only when recharging a lithium-ion
battery.
Q2 The battery charger is supposed to be used within an ambient temperature range
of 0 to 40°C.
What happens if the charger is used at below 0°C or above 40°C?
A2 At ambient temperature below 0°C, charging is either not possible or overcharging will
occur due to a malfunctioning recharging control circuit. At ambient temperature above
40°C, charging stops before fully charging the battery due to a rise in temperature
caused by the small difference between the upper limit of rechargeable battery
temperature (55°C) and the ambient temperature.
Q3 What is the relation between the chargeable battery temperature range at the start
of charging and the upper limit of chargeable battery temperature?
A3 The table below shows said relation.
Chargeable battery temperature range at start of
charging
Upper limit of chargeable battery temperature
Stop current
detection
-9-
0°C to 50°C
55°C