Electric auger

[Mildog]

My ion is acting up, full battery, it stops and starts a bit when under load but not when no load? Had it about 5 years never a problem but last 2 trips it started doing that? It still gets through the ice, just annoying in the start stop thing?? Brother had a newer one same battery, I think we should have tried switching battery last trip to just check if battery related, not sure we will get out again this year? Wondering if anyone with an ION auger has had this happen?
May have to do some research , maybe call factory?
Thanks