Terminal mount fuse block

[killarneygetaway]

I'm looking for some advice on terminal mount fuse blocks like the one pictured below from Blue Sea. All the ones I can find have a M10 hole for mounting to a battery however all the LiFePO4 batteries have M8 studs. Can these still be used even though the hole is too big?

 

[DIYrich]

Maybe this, M8 to M10 adapter:

https://www.bedbathandbeyond.com/Home-Garden/Other-Electrical-Supplies/22426/subcat.html?featuredproduct=37207072

 

[cinergi]

Be careful with this method -- you will put a lot more physical stress on the cell terminal this way.
I've seen vendor documentation that says NOT to attach these directly to a battery -- but I suspect that was more due to ignition problems with batteries that produce gasses.

 

[killarneygetaway]

Thank you for the replies. I can see how these could be a concern if connected to a battery that has off-gas. Not an issue for Lithium. As for using adapters, I'm not sure they are designed to carry the type of load that could be coming off a battery.

I'm still looking for some guidance as to whether or not I'm looking for problems using something with a M10 mounting hole on a battery with M8 stud.

I figured these would be best as it eliminates the need for another cable and ends to be made for each battery. If an inline fuse/breaker is a better option, I could go with that.

 

[mikefitz]

Use copper washers M8, example,

https://www.amazon.co.uk/M8-Washers-Sealing-18-1-5/dp/B0C84TJSQY/ref=sr_1_34?crid=2AR4ZPFNPDU6U&keywords=M8%2Bcopper%2Bwasher&qid=1691102349&sprefix=m8%2Bcopper%2Bwasher%2Caps%2C134&sr=8-34&th=1