F1 fuse

[Womble68]

Hi all is anyone able to help a f1 fuse on circuit board has blown ,there are no markings on the fuse to identify it ,it is a circuit board for a battery pack which is no longer made so would like to get it back working , the cells of battery pack are all good and balanced I just accidentally let go of leads and they touched blowing fuse , all I have on battery pack is 5400mah 14.8v dc batterys are wired in series would anyone have an idea of what rating fuse I would need to replace it with
Thanks

 

[Diver300]

A photo might help.

What sort of batteries are they? What does the pack power?

 

[Womble68]

Lipo battery pack for a large drone View attachment 20201120_121716.jpg

 

[sagor1]

If you cannot figure out the fuse rating directly, maybe measure the current while plugged into the drone and under full power. Then add 50%-100% to that value (I would use +100% to add margin for motor stall current) and use a fuse of that size. The fuse is to protect against short circuit, which it did.

 

[Diver300]

As far as I can see, the fuse is 1206 size. Farnell have that size up to 40 A. https://uk.farnell.com/w/c/circuit-...essories/fuses/smd-fuses?fuse-case-style=1206

I agree with sagor1 about working out the size.