(see example). In Run mode, the battery icon will display six bars when
it is full.
4. Remove the lead from the charging socket and replace the protective
cover.
3.2 Non-rechargeable batteries
Tetra uses a three AA alkaline battery pack which will give 11 hours operating
time. The following battery types are suitable for the non-rechargeable version:
Energizer type LR6 MN1500
Gold Peak type 15A LR6
Duracell type MN1500 LR6
Varta type 4006
Alkaline batteries will typically last 11 hours.
To replace the battery pack, ensure you are in a safe, non-hazardous area. The
battery pack is located in the bottom of the instrument. Remove the access
cover and withdraw the battery pack. Replace the 3 x AA cells, then reinsert the
pack into the instrument and replace and securely fasten the access cover.
13
Tetra Batteries