Internal Batteries - Bartington MS2 Operation Manual

5.7. Internal Batteries

The instrument is powered by internal maintenance-free rechargeable Ni-MH batteries.
Recharging can be carried out from either a mains electricity supply or a vehicle power socket.
WARNING: When using the mains power supply, ensure that you are using a mains adaptor
that is correct for local AC mains voltage (110V or 240V).
To recharge the batteries, connect either the 12V mains power supply adaptor or the vehicle
power socket cable to the 2.1mm connector on the rear panel of the instrument where a yellow
LED will indicate that charging is taking place. The rate of charge will depend on whether the
instrument is switched ON (trickle charge) or OFF (full charge).The charger input is polarity
protected and any DC source as specified in the product brochure can be used.
Note: To maintain the full capacity of the batteries it is necessary to completely discharge
and recharge them not more than every six months.
5.6.1. Battery Charging: Laboratory Use
When the instrument is switched on and connected to the mains supply via the battery charger,
the batteries receive a trickle charge and therefore continuous use from the power supply is
permitted.
5.6.2. Battery Charging: Field Use
Note: For field use, the batteries will need to be charged overnight for use the following
day. A full recharge will take 16 hours with the instrument switched off and connected to an
external mains supply or vehicle power socket.
Caution: To prevent overcharging, do not continue charging for more than 16 hours.
5.6.3. Battery Check
The condition of the batteries can be checked by selecting 'BATT' on the range multiplier switch.
The battery indicator lamp will appear:
• Green: charge acceptable.
• Yellow: re-charge soon.
• Red: re-charge immediately.
Note: Use of the instrument when the battery voltage is low will cause excessive
measurement drift and serial communication may fail.
BARTINGTON INSTRUMENTS
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