All ZeniPower mercury-free hearing aid batteries – low risk of batteries exploding during use or if depleted

Manufactured by Zhuhai Zhi Li Battery Co Ltd – stop using batteries with certain best before dates (MDA/2016/003)


  • Identify affected batteries (see device section).
  • Do not use batteries with a best before date of ‘08-2018’ and ‘09-2018’. This date is on the outer blister packaging.
  • If in doubt do not use.
  • Ensure all cochlear implant and hearing aid patients receive a copy of this medical device alert, that they understand the problem and do not use the batteries.
  • Contact your supplier to arrange for replacement batteries and ensure there is a system in place to supply users with these batteries.

Action by

Audiology departments and staff responsible for these devices.

Deadlines for actions

Actions underway: 24 March 2016

Actions complete: 22 April 2016

Device details

Only batteries with best before dates of ’08-2018’ and ‘09-2018’ are affected.

If you purchased these batteries from NHS Supply Chain, their codes (NPC) are given below:

NPC (England only) Manufacturer product code Description Brand
GHD3582 A675P MF R44 zinc air size 675 for cochlear implants ZeniPower
GHD3583 A675 MF R44 zinc air size 675 ZeniPower
GHD3584 A13 MF R48 zinc air size 13 ZeniPower
GHD3585 A312 MF R41 zinc air size 312 ZeniPower
GHD3586 A10 MF R70 zinc air size 10 ZeniPower

Since 13 January 2016, NHS Supply Chain has received new supplies of batteries, which do not exhibit this problem.

Problem / background

The problem is caused by excessive gassing, as the zinc electrode reacts with the electrolyte to generate hydrogen. The battery may expand and possibly explode on rare occasions. This issue affects all types of ZeniPower mercury-free batteries listed above.

Manufacturer contacts


ZeniPower Battery Co. Ltd

Tel: +86 756 252 6620



If you are responsible for cascading these alerts in your organisation, these are our suggested distribution lists.

Trusts (NHS boards in Scotland)

CAS and SABS (NI) liaison officers for onward distribution to all relevant staff including:

  • Audiology departments
  • Cochlear implant centres
  • ENT departments
  • ENT medical staff
  • ENT services, directors of
  • Risk managers

NHS England area teams

CAS liaison officers for onward distribution to all relevant staff including:

  • Community pharmacists
  • General practitioners
  • General practice managers
  • General practice nurses

Independent distribution

Establishments registered with the Care Quality Commission (CQC) (England only)

  • Adult placement
  • Care homes providing nursing care (adults)
  • Care homes providing personal care (adults)
  • Clinics
  • Domiciliary care providers
  • Further education colleges registered as care homes
  • Hospices
  • Hospitals in the independent sector
  • Independent treatment centres
  • Nursing agencies
  • Private medical practitioners

Establishments registered with OFSTED

  • Children’s services
  • Educational establishments with beds for children
  • Residential special schools

Please note: CQC and OFSTED do not distribute these alerts. Independent healthcare providers and social care providers can sign up to receive MDAs directly from the Department of Health’s Central Alerting System (CAS) by sending an email to: and requesting this facility.



Send enquiries about this notice to MHRA, quoting reference number MDA/2016/003 or 2015/012/010/401/016.

Technical aspects

Yasser Zayni or Andy Marsden

Tel: 020 3080 7238 or 7205

Email: or

Clinical aspects

Mark Grumbridge, MHRA
Senior Clinical Advisor

Telephone: 020 3080 7128


Reporting adverse incidents in England

Through Yellow Card

Northern Ireland

Alerts in Northern Ireland are distributed via the NI SABS system.

Enquiries and adverse incident reports in Northern Ireland should be addressed to:

Northern Ireland Adverse Incident Centre
CMO Group,
Department of Health, Social Services and Public Safety

Telephone: 028 9052 3868

Fax: 028 9052 3900


Northern Ireland Adverse Incident Centre (NIAIC)

Reporting adverse incidents in Northern Ireland

Please report directly to NIAIC using the forms on our website.


Enquiries and adverse incident reports in Scotland should be addressed to:

Incident Reporting and Investigation Centre
Health Facilities Scotland
NHS National Services Scotland

Telephone: 0131 275 7575

Fax: 0131 314 0722


Reporting adverse incidents in Scotland

NHS Boards and Local Authorities in Scotland – report to Health Facilities Scotland.

Contractors such as private hospitals carrying out NHS work and private care homes that accept social work funded clients – report to Health Facilities Scotland.

Private facilities providing care to private clients report to the Care Inspectorate and MHRA.


Enquiries in Wales should be addressed to:

Healthcare Quality Division
Welsh Government

Telephone: 02920 823 624/02920 825 510


Reporting adverse incidents in Wales

Report to MHRA through Yellow Card and follow specific advice for reporting in Wales in MDA/2004/054 (Wales).

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All ZeniPower mercury-free hearing aid batteries – low risk of batteries exploding during use or if depleted. MDA/2016/003

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