@pet12: As this is a closed unit you will need to arrange a battery replacement via an authorised Samsung Support Centre. With this in mind, please reach out to our Help Desk via the link below, and an advisor will be able to look into this further for you.
Thanks for your prompt reply. I've worked as an electronic engineer on computer equipment for 20 years. I've also seen what's involved for my particular tablet on you tube. Is it not possible for be to purchase an OEM battery for this tablet?
@pet12: In this instance I'd recommend checking the following affiliated retailers, as they deal in genuine replacement Samsung parts and accessories.
Please be aware that performing the battery replacement yourself will void your warranty, as it would be classed as an unauthorised modification.