12 Specifications EFA-200/-300
12-20
12.6.6 Power supply
12.6.6.1 Battery operation
Basic Unit only
– or –
E-Field Unit only
Built-in exchangeable NiMH
batteries
5 size C (Baby), IEC R14
Operating life with
rechargeable batteries at
23
°C
Typically 10 hours
Measurement sequence,
timer-controlled
Typically 24 hours
Charging time for
rechargeable battery,
measurement off
Typically 3 h
Alkaline batteries 5 size C (Baby), IEC LR14
Operating life with alkaline
batteries at 23
°C
Typically 20 h
Built-in NiMH batteries Can only be exchanged by a service agent
Operating life at +23 °C Typically 10 hours
Measurement sequence,
timer-controlled
24 hours
Charging time Typically 3 hours