Do Battery Tenders break or wear out?

[billday]

Just noticed that my trusty Battery Tender Jr. never gets to a full charge, even on a known-to-be-good battery. Do other people know them to wear out?

Thanks in advance.

[kenray]

I don't know if they go bad or not. However I had one on my K100rs. Thought the battery was good, I was positive. Thought the tender was no good, would not charge the battery. Bought another tender same story. You know the end of story, battery had a bad cell. Now I own two good battery tenders. Ken in Katy tx.

[billday]

Answering my own question: Both my bikes have a Battery Tender cable permanently mounted for easy battery fluffing. Finally figured out that the 7.5 amp fuse in both cables blew. Why? No idea. But I can tell you that I should have checked that before I bought a second Battery Tender.

[kioolt]

I would say yes that a battery tender can go bad.  Is it likely?  I don't know.  But possible, yes.  After all, it's just an electronic device.