When I GO TO CHARGE THE GOLF BUDDY VS4 THE LIGHT JUST FLASHES IN THE ON AND OFF SWITCH

Question edited for clarity.

Help in the link.

https://www.google.com/search?q=Golf+Buddy+W10+watch+replace+battery

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Me, too. Golf Buddy charges on floor of car but something bent charging port while hooked up.
Replaced charge cord, then have to position GB so that charge cord pulls "down" on port in order to see flashing light charging in progress.
Has brand new battery Jan 2021 so not quite ready to replace it with new.
Now I know battery replacement is waste of time/money since this is a cheap product - and FYI lies about yardage of some holes LOOOOONG time reported to GB who cares nothing about a fix - so, if anything goes wrong, simply donate & buy new ... until the completion has us all gleefully putting GB in our rear view mirror

Yes, batteries are readily available.

https://www.google.com/search?q=golf+buddy+wt3+battery+replacement

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Buddy VS4 has this bug. You don't need to worry about it and I'll suggest you not to buy golf gps before checking their reviews online.

If you want to check reviews, this is the best reviews site (https://ourrangefinder.com/best-golf-gps-rangefinders/) I ever found.

I also had the same problem of the battery not lasting a whole round. I found out that if the unit was left for any length of time after it had been fully charged, it would start to discharge even though it was turned off. I now make sure that if I'm playing golf the next day I will put it back on charge overnight.
this has worked successfully for the last 5 months approx
i also looked to find a replacement battery but without success
hope this helps

Try charging your voice twice, I've found this works

Not seeing it as a replaceable part - but...if you can take it apart and find a battery for it, why not? Start by taking it apart and taking the battery out, then check the battery for numbers, google those and see what you can find.
Good luck.