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@kawzak avatar
UTC

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I learned this from a different application-(my home security keypad batteries). If your key fob(s) hang on a hook on a wall in your room or where ever in your dwelling and a 110v light switch or outlet is close to where the key fob(s) are hanging it cause the fob batteries to go bad faster. In the case of my security key pad ( after relocating per the OEM tech) battery life went from<6 months to more than 9-10 months to a year. The tech told me the 110v wiring in the wall is responsible for additional drain on ANY batteries close to/near by ( with in 16"<>). Don't know the scientific reason, but I know it to be true. Hope this helps someone.
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2013 Vespa 300 Super, 2022 Kymco AK 550
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@bob_copeland avatar
2013 Vespa 300 Super, 2022 Kymco AK 550
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UTC quote
My 2022 Kymco 550 has battery fobs. They do die every year. Kind of a pain in the butt. I take both fobs down to my scooter shop and have them swap out the batteries every season. The reason I have them do it - it is a challenge opening and closing (small pieces all over the place)). They do it seconds - it takes me much longer.

Not easy to teach and old dog new tricks. I have not figured out 50% of the dash board technology on the three screens. I think I could land airplanes with all that stuff.

Bob Copeland
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GTS300 Super (Heinz) GTS250 Super (Bulger)
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@syd avatar
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UTC quote
My fob is in a Faraday Cage (metal filing cabinet). I only use the key.
@znomit avatar
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Veni, Vidi, Posti
LX190 Friday afternoon special, Primavera, some pushbikes
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@znomit avatar
LX190 Friday afternoon special, Primavera, some pushbikes
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UTC quote
I'm glad I have 240v Razz emoticon
@jimc avatar
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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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UTC quote
kawzak wrote:
I learned this from a different application-(my home security keypad batteries). If your key fob(s) hang on a hook on a wall in your room or where ever in your dwelling and a 110v light switch or outlet is close to where the key fob(s) are hanging it cause the fob batteries to go bad faster. In the case of my security key pad ( after relocating per the OEM tech) battery life went from<6 months to more than 9-10 months to a year. The tech told me the 110v wiring in the wall is responsible for additional drain on ANY batteries close to/near by ( with in 16"<>). Don't know the scientific reason, but I know it to be true. Hope this helps someone.
I call bullshit, sorry.
@vespergeezer avatar
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GTS300, Cosa LX200
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UTC quote
znomit wrote:
I'm glad I have 240v Razz emoticon
Unless European harmonisation has been reversed it's highly likely you have 230V.
@znomit avatar
UTC

Veni, Vidi, Posti
LX190 Friday afternoon special, Primavera, some pushbikes
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@znomit avatar
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UTC quote
VesperGeezer wrote:
Unless European harmonisation has been reversed it's highly likely you have 230V.
We cut the extension cord to Europe a while ago and generate our own electricity now at 240v.
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Veni, Vidi, Posti
GT 2.4
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UTC quote
znomit wrote:
We cut the extension cord to Europe a while ago and generate our own electricity now at 240v.
With a fork, you can test the actual voltage. Bend the tines and stick one in the socket. 240 feels slightly stronger than 230. The longer you can hold the fork in the socket, the less often you will need haircuts.
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@kawzak avatar
UTC

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Ok . If you have a security system from one of the (4) top security monitoring companies in the U.S. and you later buy a remote wireless keypad ( that you can put anywhere in the house you want) and battery life is poor ( maybe 6 mo) you've changed them twice already- and you call the company to say the keypad is bad because it eats batteries- and the tech asks where it's located, you tell them and they ask if it's within a 12-14" from a light switch or outlet. You say it is and they don't hem/haw around but tell you to move the key pad farther away -and that solves the problem- do you think maybe this has happened before ? Possibly several times ? I consider that a fix. If anyone Believes it or not I could care less. I was trying to help someone that may experience short battery life in what ever device. Has a nice day.
@jimc avatar
UTC

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The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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@jimc avatar
The Hornet (GT200, aka Love Bug) and 'Dimples' - a GTS 300
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UTC quote
As a key fob's electronics are only activated (i.e. current drawn from the battery) when a key is pressed, are you contending that a lithium coin cell, all by itself, will lose it's charge if within 12" of a 120V mains power cable? Or is there something about the outlet sockets that sucks charge directly from batteries? This electronics engineer would love to hear of this new form of power transfer...
@vespergeezer avatar
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GTS300, Cosa LX200
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UTC quote
znomit wrote:
We cut the extension cord to Europe a while ago and generate our own electricity now at 240v.
Assume this is a political 'joke'?
We currently have 9 or so interconnects with the rest of Europe.
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UTC

Molto Verboso
Piaggio Beverly 300 ie - 2012
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Molto Verboso
@petercc avatar
Piaggio Beverly 300 ie - 2012
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Location: Belgium
UTC quote
jimc wrote:
As a key fob's electronics are only activated (i.e. current drawn from the battery) when a key is pressed, are you contending that a lithium coin cell, all by itself, will lose it's charge if within 12" of a 120V mains power cable? Or is there something about the outlet sockets that sucks charge directly from batteries? This electronics engineer would love to hear of this new form of power transfer...
I follow you 100%, Jim, but Kawzak did get this information from what seems to me to be a reliable source.

There are also fobs that are always active, so always consuming some energy, like the fobs used in keyless entry systems. I would expect they send out constantly a weak signal, so you have to be close enough to the antenna for the antenna to pick up the signal. Only a weak signal is needed therefore battery life span is not a problem.

Now, a friend once had a car with what was probably a first generation keyless, quite some years ago. And he told me he regularly experienced problems with the keyless when he had his car parked in front of his house, directly in front of the garage, while anywhere else parked the system worked fine.

Could there be fobs or other wireless things that recognize an electric field and then produce a stronger, more energy consuming signal?
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UTC quote
I'm sorry if I had misled anyone on the key fob battery life. My experience w/my key pad uses AA alkaline batteries, not lithium like many key fobs have/use. I had read in auto owners hand books that key fobs should not be left by Television or cell phones. This and my experience w/key pad close to 110v source prompted my original post.
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