Fidelity Electronics FM180, Operation Manual

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10. Battery Power & Recharging
Remaining battery power of the built-in rechargeable battery is displayed on
the
BATTERY POWER / LEVEL INDICATOR.
10.1 Symbols and Remaining Power: -
Full Battery: ≥ 6.3V
2 Blocks: ≥6.0V
1Block: ≥5.7V
Frame only:
＜
5.7V
10.2 Battery Operation Time
Depends on the battery condition, a new and fully charged rechargeable
battery can provide
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: -

around 70 hours of continuous operation with backlight on, or
 around 200 hours of continuous operation without backlight.
10.3 Recharge Battery
When appears, (when battery is less than 5.7V), it means that the
built-in rechargeable battery is at low voltage status. It is recommended to
recharge as soon as possible.
To protect the built-in rechargeable battery, this instrument will be powered
off automatically when battery is at extremely low level. If this is the case, do
not attempt to power this instrument on. Recharge this instrument
immediately. Fail to do so may cause unrecoverable damages to the built-in
rechargeable battery.
Battery charging status is shown on the dual color
CHARGE STATUS
INDICATOR : -
 Red: - Recharging in process,
 Green: - Charging completed.
Battery recharge is possible while operating. Overcharge protection circuit is
inside to prevent battery damages from overcharge.
Heat generated during recharging and it is normal to feel minor heat at front
housing of this instrument.
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When connect to one 350-ohm load cell