Product Manual

Product Overview Zeta125/ Zeta125s | 27

3.1 Batteries

3.1.1 Operating Principles

First-time use /

Charging

batteries

• The battery must be charged prior to using it for the first time.

• The permissible temperature range for charging is between 0°C to +40°C/

+32°F to +104°F. For optimal charging, we recommend charging the

batteries at a low ambient temperature of +10°C to +20°C/+50°F to

+68°F if possible.

• It is normal for the battery to become warm during charging. Using the

chargers recommended by GeoMax, it is not possible to charge the battery

if the temperature is too high.

• For Li-Ion batteries, a single refreshing cycle is sufficient. We recommend

carrying out a refreshing cycle when the battery capacity indicated on the

charger or on a GeoMax product deviates significantly from the actual

battery capacity available.

Operation /

Discharging

• The batteries can be operated from -20°C to +55°C/-4°F to +131°F.

• Low operating temperatures reduce the capacity that can be drawn; high

operating temperatures reduce the service life of the battery.

GeoMax_Zeta125_Zeta125s_UM_v1.0.0_en.fm Page 27 Friday, November 28, 2014 9:23 AM