Used the American Angler Pro Fillet Knife for years until I tried the Rapala Lithium Ion Cordless Knife. Here is the link below to the combo kit I bought on Amazon it comes with the knife, charger, 1 extra battery, very nice carrying case.
https://smile.amazon.com/Rapala-Lit...ithium+ion&qid=1583328081&sr=8-1However, I made one slight change. I actually use the Saltwater Blades that go in the American Angler Pro. They actually fit the Lithium Ion perfectly.
Below is the link to the Blades I use. I like these Titanium Saltwater Blades. $24.99 a set.
https://smile.amazon.com/American-Angler-Saltwater-Replacement-Electric/dp/B07RY43VLF/ref=sr_1_2?dchild=1&keywords=american%2Bangler%2Bpro%2Breplacement%2Bblades&qid=1583328424&sr=8-2&th=1
They also have the Saltwater Blades in Stainless Steel. They just wear out a little quicker than the Titanium Blades. $16.99 a set.
https://smile.amazon.com/American-Angler-Saltwater-Replacement-Electric/dp/B001F0M13I/ref=sr_1_2?dchild=1&keywords=american%2Bangler%2Bpro%2Breplacement%2Bblades&qid=1583328424&sr=8-2&th=1
Pair the Lithium Ion Rapala with some American Angler Saltwater Blades and you will never want to use anything else.
My Dad and I were sold after one use.
If you are wondering how long the Battery will last. I can clean a double limit no issues on one battery. I cleaned a 100 one time and towards the end it was slowing down. If I had more to clean I would have needed to switch to my second battery.
On a 2 man or 3 man limit no problem on one battery and you still have a spare in your kit.
Give it a try you will not be disappointed.
I give the Rapala Lithium Ion Cordless paired with American Angler Saltwater Blades two thumbs up.
Good Luck!