The Ford Barn

al's28/33 · 01-22-2019, 07:11 PM

I've been using my battery tender this winter and so far so good HOWEVER, when the green light is flashing, it has been faintly buzzing with what sounds like a video game intermission melody.

Has anyone else heard these buzzing sounds or is my tender ready for the scrap heap from too much use or what???

Smooth_One · 01-22-2019, 11:34 PM

Quote:

Originally Posted by al's28/33

I've been using my battery tender this winter and so far so good HOWEVER, when the green light is flashing, it has been faintly buzzing with what sounds like a video game intermission melody.

Has anyone else heard these buzzing sounds or is my tender ready for the scrap heap from too much use or what???

How old is the tender? Is it 12V/6V? Sorry I have to ask.

al's28/33 · 01-23-2019, 12:15 AM

maybe only three years old for 6 volt batteries.

Y-Blockhead · 01-23-2019, 12:19 AM

Flashing green light means your battery is 80% charged. Does it ever achieve full charge (solid green)? I honestly never noticed any buzzing, but then again I haven't noticed it flashing much either. Mine is a 12v Battery Tender Jr.

California Travieso · 01-23-2019, 12:42 AM

I have a 6 Volt Battery Tender Jr., and the Battery Tender Junior Manual states that it will not turn on if the battery is dead or has less than three volts it will not start and the red light will flash. In that case, you will need to use a regular battery changer the charge the battery.

WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY LOW VOLTAGE:
If you try to charge a dead battery having a voltage below 3 Volts, the
Battery Tender® Junior charger will not start. An internal safety circuit 1. prevents the charger from generating any output voltage unless it senses at
least 3 Volts at the charger output. In this situation, the red light will
continue to flash, indicating that a charge has not been initiated.

You can find the manual on the battery Tender web site: www.batterytender.com

David Serrano

al's28/33 · 01-23-2019, 08:42 AM

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It maintains the charge on my battery just perfectly, however I noticed the other day that there is a definite faint buzzing melody coming from the transformer unit at the wall plug. After the flashing green turned to solid green the buzzing sound stopped. Battery is not even two years old. All 6 volt system.

30 Closed Cab PU · 01-23-2019, 09:11 AM

Try contacting Deltran, they have contact info on their website.

Badpuppy · 01-23-2019, 10:11 AM

Switching regulators generally operate much above the audio range, but harmonics can cause internal ferrous materials to resonate. Nothing to worry about; modern designs will fail in a safe state.

Similar to an old transformer for a doorbell or model train, except they operate at mains frequency to begin with. Noisy but works.

01-22-2019, 07:11 PM	#1
al's28/33 Senior Member Join Date: Jun 2010 Location: Redwood City, CA Posts: 1,591	Battery tender Jr. BUZZING??!?!?!?! I've been using my battery tender this winter and so far so good HOWEVER, when the green light is flashing, it has been faintly buzzing with what sounds like a video game intermission melody. Has anyone else heard these buzzing sounds or is my tender ready for the scrap heap from too much use or what??? __________________ 1928 "A" Phaeton (mid year with many early features) 1933 "V8" Closed-Cab Pickup Truck (originally a Model B, 4 Cylinder dating to May, 1933)

01-23-2019, 12:15 AM	#3
al's28/33 Senior Member Join Date: Jun 2010 Location: Redwood City, CA Posts: 1,591	Re: Battery tender Jr. BUZZING??!?!?!?! maybe only three years old for 6 volt batteries. __________________ 1928 "A" Phaeton (mid year with many early features) 1933 "V8" Closed-Cab Pickup Truck (originally a Model B, 4 Cylinder dating to May, 1933)

01-23-2019, 12:19 AM	#4
Y-Blockhead Senior Member Join Date: Jul 2011 Location: Redondo Beach, CA Posts: 5,848	Re: Battery tender Jr. BUZZING??!?!?!?! Flashing green light means your battery is 80% charged. Does it ever achieve full charge (solid green)? I honestly never noticed any buzzing, but then again I haven't noticed it flashing much either. Mine is a 12v Battery Tender Jr.

01-23-2019, 12:42 AM	#5
California Travieso Senior Member Join Date: Mar 2014 Location: Moreno Valley, CA Posts: 945	Re: Battery tender Jr. BUZZING??!?!?!?! I have a 6 Volt Battery Tender Jr., and the Battery Tender Junior Manual states that it will not turn on if the battery is dead or has less than three volts it will not start and the red light will flash. In that case, you will need to use a regular battery changer the charge the battery. WORKING WITH A DEAD BATTERY OR A BATTERY WITH A VERY LOW VOLTAGE: If you try to charge a dead battery having a voltage below 3 Volts, the Battery Tender® Junior charger will not start. An internal safety circuit 1. prevents the charger from generating any output voltage unless it senses at least 3 Volts at the charger output. In this situation, the red light will continue to flash, indicating that a charge has not been initiated. You can find the manual on the battery Tender web site: www.batterytender.com David Serrano

01-23-2019, 08:42 AM	#6
al's28/33 Senior Member Join Date: Jun 2010 Location: Redwood City, CA Posts: 1,591	Re: Battery tender Jr. BUZZING??!?!?!?! Sponsored Links (Register now to hide all advertisements) It maintains the charge on my battery just perfectly, however I noticed the other day that there is a definite faint buzzing melody coming from the transformer unit at the wall plug. After the flashing green turned to solid green the buzzing sound stopped. Battery is not even two years old. All 6 volt system. __________________ 1928 "A" Phaeton (mid year with many early features) 1933 "V8" Closed-Cab Pickup Truck (originally a Model B, 4 Cylinder dating to May, 1933)

01-23-2019, 09:11 AM	#7
30 Closed Cab PU Senior Member Join Date: Aug 2018 Posts: 2,332	Re: Battery tender Jr. BUZZING??!?!?!?! Try contacting Deltran, they have contact info on their website.

01-23-2019, 10:11 AM	#8
Badpuppy Senior Member Join Date: Dec 2017 Location: Guthrie, OK Posts: 1,144	Re: Battery tender Jr. BUZZING??!?!?!?! Switching regulators generally operate much above the audio range, but harmonics can cause internal ferrous materials to resonate. Nothing to worry about; modern designs will fail in a safe state. Similar to an old transformer for a doorbell or model train, except they operate at mains frequency to begin with. Noisy but works.