Battery capacity for tablets

Groups: 
  • Tablets
Category: 
  • Product lifetime extensions

Basic

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

The main objective is to ensure satisfactory battery capacity and a robust battery with a long lifetime expectancy.   

 

Requirement Specification: 

All models shall be supplied with the maximum available battery capacity without impacting the device’s form factor.

Documentation of the Requirement Specification: 

The supplier shall confirm that the requirement is met and describe the batteries’ capacity and minimum duration when fully charged.

Information about the Requirement Specification: 

The requirement is meant to ensure that the contracting authority gets the best battery in conformity with the requirement specification. The tenderer shall document the duration of the battery from fully charged to empty. This aims to ease follow-up of the requirement, and to provide information on what the best capacity available for the product is.

The battery lifetime is impacted by use, and the supplier should be encouraged to share information on simple measures for how the contracting authority may contribute to extending the lifetime as much as possible (temperature, use of sleep mode, etc), which should be disseminated in the contracting authority’s organisation.

Advanced

Requirements and Criteria Type: 
  • Technical Specification (Requirement Specifications)

Main Objective: 

The main objective is to ensure satisfactory battery capacity and a robust battery with a documented long lifetime.

Requirement Specification: 

1) All models shall be supplied with the maximum available battery capacity without impacting the device’s form factor.

and

2) The main battery shall withstand at least [300] charging cycles with a minimum 60 % remaining capacity (SoC). The minimum number of charging cycles with at least [60] % remaining capacity for the main battery shall be stated on the certificate.

Documentation of the Requirement Specification: 

1) The supplier shall confirm that the requirements are met and describe the batteries’ capacity and minimum duration when fully charged.

and

2) Submit valid certificate of TCO Certified generation 8 as or corresponding Type I environmental labelling scheme that proves the requirement is met or submit Test report(s) for the battery in accordance with IEC 61960 from ISO 17025 accredited laboratory.

Information about the Requirement Specification: 

Requirement 1 is meant to ensure that the contracting authority gets the best battery in conformity with the requirement specification. The tenderer shall document the duration of the battery from fully charged to empty. This aims to ease follow-up of the requirement, and to provide information on what the best capacity available for the product is.

Requirement 2 aims to ensure that the battery is robust and that capacity does not degrade disproportionally in use. This requirement is included in TCO Certified generation 8 (point 6.5 Battery longevity). The ambition is that min. 30 percent of the IT equipment on the international market shall be able to fulfil the requirements when a new TCO generation is launched, so that several brand owners will meet the requirements and that one will get several bidders in the procurement process.

A requirement to the number of charges the battery must at least withstand before capacity degrades below a specified level shall contribute to this. 

Charging status (SoC) specifies the remaining battery charge (0-100%). The capacity of a new battery must be 100%. A battery cycle is completed when the battery is completely discharged from 100% to 0% and then charged back to 100%. The number of battery charging cycles affects the battery’s lifetime, and robust batteries will withstand more charging cycles before capacity degrades

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Published: 18. Sep 2019, Last modified: 02. Oct 2019