As far as I know, there is no direct bus from Xiamen to Jieyang by battery. However, you can take a bus to Jieyang city first, and then take a bus or taxi to the battery.

The specific route is as follows:

1. It takes about 4-5 hours by bus from Xiamen to Jieyang City (Jieyang Bus Terminal).

2. After getting off at Jieyang Bus Terminal, you can walk or take a taxi to the battery in Jieyang city (about 30 minutes).

If you want to know the current traffic situation from Xiamen to Jieyang more accurately, I suggest you consult the local traffic information or seek help from the local tourism consultation center.