Texas Instruments 51X - Manual (Page 47)

Table 4-4 Primary Battery Pack Specifications
Function Specifications
Battery type NiMH (Nickel Metal-Hydride)
Cell structure 9 cells per pack (in series)
Nominal voltage 10.8 V
Cell energy capacity
Typical
Minimum 2400 mAH
2500 mAH
2330 mAH
Nominal rated capacity 27 Watt-hours
Operating Temperature
_
Discharge
Charge -20 to 50°C (at 95%RH)
0 to 45°C (at 95%RH)
Charge and discharge
cycles 500 (minimum)
Weight 470 grams
Battery discharge time 3 hours (with APM)
Battery charge time
4-8 Theory of Operation