Lithium Batteries

I have a Hormann auto garage door The detailed instructions include a method of the base unit 're-learning' the remotes frequencies so that the keypad and remotes work fine. I have had to do that after a sustained power cut I recall

It may be because of a weak battery your remote handset has defaulted to another channel and become invisible perhaps? I'd be surprised if your system did not have the same option of resetting-from the base unit rather than the remote itself? Just a thought.

Bruce

You're right Bruce - most remote's work on the same system the older car alarms did with a rolling code arrangement between the fob and controller and can go out of sync. Saying that when one of our garage remotes broke (i stood on it !), it was about £30 to replace and a royal PIA to find the right one to match the controller. 

Do an internet search Dungassin, it's almost certain that you can resync. the remote. 

I would do and internet search if I knew the actual model of remote.  It doesn't have any serial numbers etc on it.   I've tried changing the battery - didn't cure the problem.  I would be surprised it that were the problem as I don't think the remote's been used more than once a month since we've had it.  My remote is used daily, but then remember that SWMBO is a non-driver.  Still annoyed that the company tried to bullshit SWMBO with nonsense about not touching the battery with your fingers.  The door was supplied by a Derby company, and carries their brandname.  Looks like I'll have to traipse across to Derby and see if they can reset it or otherwise cure the problem.

Of course, if I knew the model number of the remote, if it wasn't one of those using a rolling code, then I could just purchase a cloning remote.

Perhaps that's the problem - maybe multiple remote controls are not compatible with rolling codes?  But if so, why has it taken 3 years for a problem to appear?  Or can the base unit cope with 2 or more remotes each using a different frequency?  Just wish the manual was more informative.

Well, I called on the company this afternoon.  Apparently the bit about handling batteries was because some morons do it with greasy hands, and they've had problems with this in the past.  My supplied documents were from the manufacturer at a time when they were changing from one remote to another.  They agreed that it was probably just the remote needing to be re-registered with the base unit and they gave me a photocopy of the procedure for adding a remote to the existing one.  Got home and tried it - to the letter - no joy.  So they're contacting the manufacturer to see how long the warranty is on the remotes (sigh)

Dungassin posted:

the garage door company [...] was told [her] 'oh, you must have been handling the battery incorrectly, you must hold it with tissue paper and not touch it with your fingers', [...]

Obviously the comment re battery handling is complete boll**ks, but £50 for a little keyring fob remote?

I was always told to handle lithium type batteries with tissue paper so that you don't get grease over them...

Eloise posted:

Dungassin posted:

the garage door company [...] was told [her] 'oh, you must have been handling the battery incorrectly, you must hold it with tissue paper and not touch it with your fingers', [...]

Obviously the comment re battery handling is complete boll**ks, but £50 for a little keyring fob remote?

I was always told to handle lithium type batteries with tissue paper so that you don't get grease over them...

Isn't that for halogen bulbs? I can't imagine why a metal case for lithium battery would require different handling than for any other type. I think this is one of those urban myths. Does it say on the packaging that they shouldn't be touched?

winkyincanada posted:

Eloise posted:

Dungassin posted:

the garage door company [...] was told [her] 'oh, you must have been handling the battery incorrectly, you must hold it with tissue paper and not touch it with your fingers', [...]

Obviously the comment re battery handling is complete boll**ks, but £50 for a little keyring fob remote?

I was always told to handle lithium type batteries with tissue paper so that you don't get grease over them...

Isn't that for halogen bulbs? I can't imagine why a metal case for lithium battery would require different handling than for any other type. I think this is one of those urban myths. Does it say on the packaging that they shouldn't be touched?

Not on the Duracell one in the dining room drawer.

The remote for our garage door stopped working last month due to weak batteries. We had one replacement from Maxell in our drawer and bought a second one from Energizer. The tissue paper thing was mentioned on both packages.

It's to prevent corrosion caused by sweat.  The current draw is so low that even a tiny amount of corrosion can produce a thin insulating layer and stop the current.