Battery you need - https://amzn.to/2ZemOnh

This is how you replace the battery in this specific honda key fob. This fob was used in pretty much all hondas in the late 90s and early 2000s. Hope this was helpful!

How to replace the battery for your key fob / keyless entry remote with the FCC ID A269ZUA106. This keyfob fits some of the below vehicles.
1996 1997 1998 1999 2000 Honda Civic
1994 1995 1996 1997 Honda Accord
2002 2003 2004 Honda CR-V

This video will show you how to replace a key fob battery for a 2001 2002 2003 2004 & 2005 Honda Civic.