Battery Information for Nox Systems

The performance of Nox Medical systems depends on the batteries. To ensure high-quality recordings every time, particular attention should be paid to battery selection and battery care.

Battery recommendations:

For the Nox T3s™: 1 AA battery

• The Nox T3s recorder is powered with one AA battery
• The list below is provided to assist the user in selecting the appropriate battery type for a Nox T3s study:
  • Alkaline batteries can be used to record from 8 to 16 hours depending on battery type.
  • Lithium batteries can be used to record from 20 to 33 hours depending on study type and
    battery.
  • Lithium batteries are optimal for multiple night recordings because it is possible to record 3 nights or more without having to change the batteries. Rechargeable NiMH batteries can be used to record for 1 hour to 1.5 hours per 200 mAh capacity. Thus, a standard 2000 mAh battery can record from 10 to 15 hours.
• Always use fully charged Powerex 2700 mAh rechargeable batteries, high quality alkaline batteries of at least 2000 mAh capacity or fresh lithium batteries 

For the Nox A1s™: 1 AA battery

• The Nox A1s recorder is powered with one AA battery
• The list below is provided to assist the user in selecting the appropriate battery type for a Nox A1s study:
  • Alkaline batteries are supported with the Nox A1s recorder and can be used to record from 10 to 12 hours depending on battery type.
  • Lithium batteries can be used to record from 20 to 30 hours depending on study type and battery.
  • Rechargeable NiMH batteries can be used to record for 1 hour to 1.5 hours per 200 mAh capacity. Recommended NiMh batteries are Maha Powerex™ 2700mAh and Panasonic Eneloop Pro™ 2500mAh. They can power the device for 12-14 hours of recording. Recharge them before every recording. It is recommended to replace them every 3 to 6 months.
• Note that battery performance has improved with recently Nox A1s firmware upgrade. 
• Note that battery life will be lower for online recordings. 

For the Nonin™ 3150 BLE oximeter: 2 AAA batteries

• This device only works with the Nox A1s and T3s recorders 
• The device uses 2 AAA batteries.
• With new alkaline batteries, battery life is approximately 44 hours (minimum).
• Rechargeable AAA battery life expected minimum based on full charge: 
  • 700mAh - 24 hours 
  • 1050mAh - 31 hours 

For the Nox T3™: 1 AA battery

• Alkaline batteries can power the device for up to 16 hours of recording. It is recommended to change them before each recording.
• Lithium batteries can power the device for over 20 hours of recording. They are the optimal choice for multiple night recordings.
• NiMh batteries with a capacity of 2500mAh or more last for up to 18 hours of recording. Recharge them before every recording. It is recommended to replace them every 6 to 12 months.

For the Nox A1™: 1 AA battery

• The Nox A1 does not support Alkaline batteries.
• Lithium batteries are recommended. They can power the device for over 12 hours of recording. They must be replaced between every recording.
• Recommended NiMh batteries are Maha Powerex™ 2700mAh and Panasonic Eneloop Pro™ 2500mAh. They can power the device for 8 to 10 hours of recording. Recharge them before every recording. It is recommended to replace them every 3 to 6 months

For the Nonin™ 3150 oximeter: 2 AAA batteries

• Alkaline batteries can power the device for up to 24 hours of recording. It is recommended to change them every 2 recordings.
• NiMh batteries can power the device for up to 20 hours of recording. Recharge them before every recording.

Recommended care for rechargeable NiMh batteries:

General recommendations on the use of NiMh batteries:

• Batteries should be stored in a cool dry place and used regularly.
• When not in use, batteries should be left on the charger, even if they are fully charged.
• Replace the batteries every 3 to 6 months if using a Nox A1s/A1 and every 6 to 12 months if using a Nox T3s/T3.
• Replace the charger every 2 years.

The Maha Powerex MH-C801D is the recommended charger for use with Nox systems. It can charge up to 8 batteries at the same time (AA and AAA). Note: only charge one battery type (AA or AAA) at a time. Do not mix AA and AAA batteries in the charger. 

Two charging modes are available:

RAPID: default mode once the charger is powered on. Recharges the batteries in 1 hour.

SOFT (recommended mode): maximises battery life and performance. Recharges the batteries in 2 hours. Initiate the SOFT charging mode as follows:

1. Remove all the batteries from the charger.
2. Insert one battery into the leftmost slot.
3. Within five seconds of inserting the battery, press and hold the “SOFT” button until “SOFT CHARGING” is displayed on the screen.
4. Insert the remaining batteries. Do not skip cells or mix battery types. 

It is recommended to condition batteries every 2 weeks. The conditioning cycle requires up to 14 hours to complete. Initiate the conditioning cycle as follows:

1. Remove all the batteries from the charger.
2. Insert one battery into the leftmost slot.
3. Within five seconds of inserting the battery, press and hold the  button until “CONDITION” is displayed on the screen.
4. Insert the remaining batteries. Do not skip cells or mix battery types. 

Ref Numbers / Part numbers (PN)*:

*All products listed with PN number (format: 70XXXXX) are reference to the ResMed catalogue. The REF numbers (format: 56 XX XX) refer to products available in the Nox Medical Product catalog. Contact your distributor for more information.

LBL-0066 REV3