What fuse size do you recommend?

It is recommended to configure 60A-80A fuse, if you think it is too low, you can also configure 100A fuse by yourself.

Does it work with solar chargers?

Yes. As long as the voltage of one battery reaches 13.3V, the isolator will start working and connect the two batteries. If you have any questions regarding the circuit design, we can offer one-on-one service.

Can I use this isolator with lithium batteries?

1. The main battery and the auxiliary battery are all lithium batteries. This isolator can be used.

2. The main battery is a lead-acid battery, and the auxiliary battery is a lithium battery. It is recommended to use an isolator (ASIN: B0C2V7ZWQZ).

The product is installed but not working, what could be the reason?

1. Check the voltage of the main battery has reached 13.3V.

2. Check the negative terminals of the primary and secondary batteries are connected.

3. Check the black negative cable of the product is connected to the negative battery terminal.

What is the reason for the continuity, rhythmic lighting and extinction of the indicator lights of the product's work?

This is a normal phenomenon, the reason is that the voltage difference between the main battery and the secondary battery is too large. Generally after charging for a period of time, this phenomenon will disappear.