Topcon GTS-823A - Manual (Page 136)

20-4
20 SPECIFICATIONS
Rechargeable Battery BT-56Q (This battery does not contain mercury)
Out put voltage
: 7.2 V
Capacity : 4.0 Ah
Maximum operating time( when fully recharged) at +20°C (+68°F)
Weight : 0.4kg (0.9 lbs)
Battery Charger BC-27BR / BC-27CR
Input voltage
: AC 120V(BC-27BR), AC 230V(BC-27CR)
Frequency : 50/60Hz
Recharging time (at +20°C /+68°F)
Rechargeable battery BT-56Q : Approx. 2.5 hours
Discharging time (at +20°C /+68°F)
Rechargeable battery BT-56Q : 12 hours (in case of full charge)
Operating temperature : +10°C to +40°C ( +50°F to 104°F)
Charging signal : Red lamp illumination
Refreshing signal : Yellow lamp illumination
Finishing signal : Green lamp illumination
Weight : 0.4kg (0.9 lbs)
l Battery using time will vary depending on environmental conditions and operations done with GTS-
820A series.
Normal use about 3.5 hours
Distance and Angle measurement about 6 hours