20 Most Recent Nike ACG Ascent WA0008 wristwatch Questions & Answers

Most digital watches have screws holding the back on, you will have to get a mini phillips screwdriver available in most stores. Remove all four screws, inside there will be a plate over the battery this plate may come up one of two ways, a screw which will require a regular screwdriver not phillips but still very small or the other way is the small metal plate has a tab you lift up you will need a magnifier to see this tab, once you pop it up batter will slide out. The battery will probably be a lithium style battery available at most stores. NOTE: there may be more than one screw that has to be removed on battery plate and sometimes you have to remove one side of watchband to get back off!

have you checked out http://www.nikewatchrepair.com/nike_models.htm

that is the official Nike parts page they also have a phone number you can call and order a replacement part. There is a link to the wa0008 parts there including watch bands.

The AC terminal is a little metal spot (usually a circle and usually gold colored) on the inside of your watch. Looking at the inside of your watch the "AC" should be labeled, though it may take a magnifier to identify it.
It may be labeled simply "AC" or it may have an arrow pointing to it. Once you locate it use a pair of tweezer or a paper clip and touch the battery and the AC together for a few seconds and release; you may have to do this twice.

Dreco,
I was changing my battery and ran into a small problem, too. I know where one spring goes, but I have another similar spring that may have fallen out of the watch (I was working on another different watch before, so I'm not sure if the 2nd spring belongs in the watch). One spring contacts the small speaker on the metal cover and will not affect the LCD display.

How many springs do you see in yours, if any?

I am very sorry to hear that news, just dreadful :>( I was trying to find out who actually makes this watch, but there is no data. Normally you send to the maker and they repair it. My late wife bought me a Seiko, and although I live in Canada, I send it to the UK where it was purchased and where the service centre is for servicing. you could ask Nike who was contracted to produce it? My guess is Casio, because it has the Casio look to it. One thought I have is that the battery that was put in it was the wrong type or it was inadvertently replaced with a battery out of another watch that came in for repair. I would have another battery put in it and see what happens. It is actually a collectible watch. https://www.google.com/search?q=Who+makes+Nike+WC0045 There are a few ideas which battery is the correct one https://www.google.com/search?q=nike+wc0045+watch+battery+replacement ....

Try contacting Nike or a good watch retailer for the replacement band. Sadly, we do not supply parts we just give advice for repairs.

Is it like this? eBay seems to be the place to go. https://www.ebay.ca/itm/282250455095 Lots here for Nike https://www.google.com/search?q=Replacement+watch+band+for+Nike+Triax&tbm=isch&ved=2ahUKEwjy4rKk9_v2AhWCqXIEHaBNCWcQ2-cCegQIABAA&oq=Replacement+watch+band+for+Nike+Triax&gs_lcp=CgNpbWcQAzIHCCMQ7wMQJ1DcDFjcDGC-D2gAcAB4AIABWIgBrAGSAQEymAEAoAEBqgELZ3dzLXdpei1pbWfAAQE&sclient=img&ei=77BLYrKvB4LTytMPoJuluAY&rlz=1C1QJDB_enCA643CA644 ..

http://pdfstream.manualsonline.com/7/7c0243c8-720a-4350-b62e-45a748682026.pdf https://www.google.com/search?q=Nike+Wc0040+444+manual ..

https://www.fixya.com/support/t1871132-set_time_nike_imara_fit

http://fitness.manualsonline.com/manuals/mfg/nike/nike_watch_product_list.html http://fitness.manualsonline.com/manuals/mfg/nike/nike_watch_product_list.html You have not given an exact model, but the manuals above are free so you should check them.