Yes, you should have a fuse between the battery bank and each of the following:
- Solar Charge Controller
- Inverter
- Converter
I'm attaching a clip from the instructions for the Go Power Weekender Solar Charging System # 34282183 that you can check out.
Be sure that you have your new batteries connected to your battery bank the right way. If you connect them in Parallel then that keeps the Voltage the same but if you connect them in Series it increases the Voltage. It's also worth... view full answer...