This seems to make sense. I had my blow once found out when my heated gear didn't get warm! Just pop a voltage tester on the bike side leads and ensure you 12VDC more or less.

 

Let me have my fun lol! On the other hand the 'tender' is akin to a trickle charger (less) - but designed to pulse on/off as req'd. They are not robust. If the bike is draining current constantly while the tender is connected then it might be beyond it's capacity. In other words it stays in the charge mode? A fully charged battery is good for several months. If the tender stayed engaged for several weeks before going 'south' then no way the bike's battery would have fully discharged.


It could be the flux capacitor though. (I like that)

 

I've had more than just my current bike plugged in. The only constant is I can't get them to last. I better check the flux capacitor...

 

Well, it's obvious that the Battery Tender is a bad product, and you shouldn't use one.

 

i've had several go bad on me. they replaced under warrenty.

 

Time to move Rob. That house doesn't like you anymore.

 

Uh oh ... I forgot all about that/them. Bob, you do have a Gremlin Bell grounded properly, correct?

 

First my wife,now the house.

I better call the dealer,maybe he can change out my summer air in the tires while I'm there.

 

I bough a 4 bank Deltran Battery Tender over 10 years ago and it's still working with the exception that one of the banks "died" several years ago and I just never got around to having it repaired,
I also have 4 of their single chargers and I've never had an issue with any of them.

If you're having this much failure with your chargers it would seem that the problem could only be in one of two places: the bike/battery, or the electrical system in your garage/home.

A weak battery might put too much demand on the charger (you should ask the manufacturer about this).

If there's a problem with your home electrical I'd be looking at grounds.
I'm no electrician, but many years ago (in a different home) light bulbs didn't seem to live very long in our master bathroom.
An electrician at work suggested that I check (carefully of course) and tighten all of the ground wires in my electrical service panel and it seemed to help but it could have just been my imagination.

Oh, and as an earlier poster stated, NEVER use a "battery charger" instead of a "battery tender". I did this many years ago and boiled a battery to death just trying to another season out of it!

 

Interesting, Thanks! JR