Physio-Control LIFEPAK 1000 - Manual (Page 58)

Specifications
A-8 LIFEPAK 1000 Defibrillator Operating Instructions
Standby Life A new battery provides device power for 5 years.
Low Battery
Indicator At least 30 200-joule shocks or 75 minutes of operating time
remain when low battery is first indicated.
Rechargeable Batteries:
Type Lithium-ion, 11.1 V, 4.8 amp hours
Capacity Typically will provide 261 200-joule discharges or 608 minutes of
operating time with a new fully-charged battery (247 200-joule
shocks or 576 minutes of operating time at 0°C (32°F)).
Battery Charging
Time Within 4.5 hours
Weight 0.45 kg (1.0 lb), maximum
Standby Life A new fully-charged battery provides device power for 6 months.
Low Battery
Indicator At least 30 200-joule shocks or 75 minutes of operating time
remain when low battery is first indicated.