getting a 15v rating on a 12v system

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still_walkin

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Joined: April 18, 2007

Location: California, United States

Posted: December 05, 2009 at 7:26 PM / IP Logged

Pretty much I was thinking if that meter was right which its not wouldn't the battery burst or give after this much over charging

1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

i am an idiot

Platinum - Posts: 13,667

This member consistently provides reliable information

Joined: September 21, 2006

Location: Louisiana, United States

Posted: December 05, 2009 at 7:52 PM / IP Logged

Chances are the "Bling Volt Meter" you know the one mounted to the battery is inaccurate. Running 14.4 volts into a battery will not usually make it blow up. Seriously get a decent meter to see which of the 2 you have is inaccurate.

still_walkin

Silver - Posts: 644

Joined: April 18, 2007

Location: California, United States

Posted: December 05, 2009 at 7:56 PM / IP Logged

Yea I know My bling meter is wrong what I was saying about the battery is if it was charging constantly at 15v on a 12v battery what would happen to the battery

1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

zerepdivad

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Joined: July 03, 2006

Location: Wisconsin, United States

Posted: December 05, 2009 at 8:11 PM / IP Logged

Just trust the multimeter. 14.4 is a healthy alternator.

A DMM is a beautiful thing.

MECP Advanced Installer Certified.

still_walkin

Silver - Posts: 644

Joined: April 18, 2007

Location: California, United States

Posted: December 05, 2009 at 8:13 PM / IP Logged

Yea I kno I left the ground on the pos terminal unplugged.

1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: December 06, 2009 at 1:14 AM / IP Logged

still_walkin wrote:

what would happen to the battery

Above 14.4 Volts (long-term) cooks the battery (gassing etc).

It usually wrecks AGS (VRLA) & Gel Cels because they have no fluids to boil off. (And you can get thermal runaway on AGMs.)

Some AGMs claim they will tolerate above 14.4V provided they do not overheat.

still_walkin

Silver - Posts: 644

Joined: April 18, 2007

Location: California, United States

Posted: December 08, 2009 at 12:58 PM / IP Logged

Sounds crazy.

1993 sdv

Alpine 4x6 6x9 5 1/4 swr-10d4

alpine v60

12.5 VGA flip down

Nettop pc w/10" touch screen

78nova

5-re audio 5x7 ,10" sub &

Xtx-500.5

"Take the faceplate off get the jumperpack"

oldspark

Gold - Posts: 4,913

Joined: November 03, 2008

Location: Australia

Posted: December 08, 2009 at 4:59 PM / IP Logged

The truth often does.

(According to others. In that regard, I no longer judge.)

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getting a 15v rating on a 12v system

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