Yes it is the battery. If you are lucky you can get another from your supermarket (watch battery)
If not it will have a soldered/pressed cable and connector. Consult/Google your mfrs website.
'how to replace battery' + your model number
This thread is now locked and can not be replied to.
Intel Coffee Lake 8th-gen Core processors release date rumours
1995-2015: How technology has changed the world in 20 years
Framestore’s haunting post-WWII title sequence for new BBC series SS-GB
Best iPhone games 2017 | Best iPad games 2017: 162 fantastic iOS games that you need to play right…
Synology invites you to visit them at Insomnia on 26th – 29th August. Book your tickets now and visit Synology.