Charge
The instrument has a charging function. When use
rechargeable batteries and a low battery indication
shows on the instrument, you should promptly shut
down it and recharge. Long time under voltage
will shorten the lifetime of the rechargeable battery.
Connect the AC adapter to the device correctly, it can
charge automatically. Besides, computer USB port can
also be used for charging. The battery remaining indicator
keeps flashing during charging. It will stop when the
charging is finished. The battery has finished the fast
recharge and can be used directly. If you do not stop
recharging at this time, the instrument will continue the
trickle charge state, using small current to supply natural
discharge. But this process is not more than 48 hours.
The instrument can still be used while charging. But do
not plug in the AC adapter when it isn’t rechargeable
battery inside, or it will cause a high temperature and
combustion, even explosion.