Image

9 volt battery get's hot

Just any other questions that you don't see a forum for. Go ahead and post here.

Moderator: JR Moderator

User avatar
d-minus
Duckplucker
Duckplucker
Posts: 116
Joined: Wednesday, 16 March 2016, 21:28 PM
Radio: cobra 29ltd
Name: Daniel
Location: Grundy,va

9 volt battery get's hot

Post by d-minus » Tuesday, 07 February 2017, 22:43 PM

O.K. i wanted to install a prewired led in my radio shack meter so i got a 9v battery a hard shell top lead for battery at radio shack and got a green led (just to try it) out of my parts shelf until i could get a white one. Also got a miniture toggle switch from radio shack,now i put the black leads together and the red leads together from the led and the battery. And soldered them to the switchIt works BUT, if i leave the top cap on the battery it will get hot ,so i take the cap off the battery let it cool 30 minutes put it back on leave it for hours and it will not get hot. Same thing goes if i turn on the led. Connections are not touching.Switch is a spst 3amp rating at 250v 6 amp at 120v. Also tried flip flopping wires on switch still the same. What's up with this. I have hooked other things up like this with no problem. I don't understand. Thanks for any help. Daniel


User avatar
pabxone
Donor
Donor
Posts: 170
Joined: Friday, 01 May 2015, 23:54 PM
Radio: NDI PC201
Antenna: 1/2 wave vertical
Name: Mark Anderson
Location: Victoria , Australia

Re: 9 volt battery get's hot

Post by pabxone » Wednesday, 08 February 2017, 5:38 AM

Have you put a resistor in series with 1 lead of the LED ?

LEDs need a dropping resistor if being powered by anything over 2 volts.

For 9 Volts you need a 330 Ohm 1/4 resistor to work correctly.

Here's a good primer on powering LEDs :- http://www.evilmadscientist.com/2012/re ... -for-leds/" onclick="window.open(this.href);return false;

User avatar
d-minus
Duckplucker
Duckplucker
Posts: 116
Joined: Wednesday, 16 March 2016, 21:28 PM
Radio: cobra 29ltd
Name: Daniel
Location: Grundy,va

Re: 9 volt battery get's hot

Post by d-minus » Wednesday, 08 February 2017, 9:19 AM

Yes they have a resistor, they came prewired with it. I hooked it back up this morning a 9:00 but it has not got hot yet. this is the problem it might get hot then it might not. Thanks. Daniel

User avatar
jessejamesdallas
Wordwide & Qualified
Wordwide & Qualified
Posts: 5808
Joined: Sunday, 10 October 2004, 18:02 PM
Location: Republic of Texas
Referrals: 1

Re: 9 volt battery get's hot

Post by jessejamesdallas » Wednesday, 08 February 2017, 10:37 AM

d-minus wrote:Yes they have a resistor, they came prewired with it. I hooked it back up this morning a 9:00 but it has not got hot yet. this is the problem it might get hot then it might not. Thanks. Daniel
Samsung battery? :shock:
Image
Image
Do not argue with an idiot. He will drag you down to his level and beat you with experience.



User avatar
d-minus
Duckplucker
Duckplucker
Posts: 116
Joined: Wednesday, 16 March 2016, 21:28 PM
Radio: cobra 29ltd
Name: Daniel
Location: Grundy,va

Re: 9 volt battery get's hot

Post by d-minus » Wednesday, 08 February 2017, 11:03 AM

JJD, Energizer industrial. (did not have a duracell) Daniel


User avatar
420Snowman
Donor
Donor
Posts: 1369
Joined: Wednesday, 07 April 2010, 9:08 AM
Radio: Snowman Built 29
Antenna: Shockwave
Name: DJ
Location: Show-Me State!!!
Contact:

Re: 9 volt battery get's hot

Post by 420Snowman » Saturday, 11 February 2017, 6:10 AM

Hmmmmm, this is strange. Why would it intermittently get warm then other times not..... Hmmmmm
Rolling the Snowman Built Gateway Mobile
16 pill Snowman Built
Snowman Built Cobra 29 LX
Davemade coil stabbed in the roof



User avatar
d-minus
Duckplucker
Duckplucker
Posts: 116
Joined: Wednesday, 16 March 2016, 21:28 PM
Radio: cobra 29ltd
Name: Daniel
Location: Grundy,va

Re: 9 volt battery get's hot

Post by d-minus » Monday, 13 February 2017, 22:19 PM

Well , it was the mini switch. changed it out to a 12v rocker switch for car rated for 10 amps. problem solved. Mini switch was rated for 125v,1.5 amp. I don't understand it but that took care of it. D-minus

User avatar
sonoma
Donor
Donor
Posts: 1356
Joined: Sunday, 02 April 2006, 14:10 PM
Location: Oklahoma

Re: 9 volt battery get's hot

Post by sonoma » Tuesday, 14 February 2017, 3:19 AM

good deal. some times some thing just does not work well in a application.

User avatar
MDYoungblood
Moderator
Moderator
Posts: 7415
Joined: Saturday, 12 June 2010, 19:05 PM
Logged in via: iPad
Radio: Uniden Washington
Antenna: Avanti Sigma II
Name: Greg
Location: Baltimore, MD
Contact:

Re: 9 volt battery get's hot

Post by MDYoungblood » Wednesday, 15 February 2017, 12:41 PM

You should check out some of the 9v battery YouTube's, a couple of them are amazing watching how easy it is to heat them up to melting temperature.

3's

Greg
"321, the Middle of Maryland"

23 AM "WORLD WIDE" 38 LSB

Strong Supporter of America's Original Homeland Security Act
The Second Amendment



Official Moderator - CBRT Complaint Department



User avatar
d-minus
Duckplucker
Duckplucker
Posts: 116
Joined: Wednesday, 16 March 2016, 21:28 PM
Radio: cobra 29ltd
Name: Daniel
Location: Grundy,va

Re: 9 volt battery get's hot

Post by d-minus » Wednesday, 15 February 2017, 19:56 PM

Thanks, i'll check them out. D-minus


Post Reply Previous topicNext topic

Who is online

Users browsing this forum: No registered users and 5 guests