Jump to content

running caps and a lithium


Recommended Posts

so i have heard some people say it is not the best idea to run maxwell caps and lithium batts together. just trying to gather more info on why this is. thanks.

2007 Ford Focus SES Hatchback

Pioneer HU

4 Digital Designs 9515i's in a B pillar.

2 Soundstream XXX 15K's (running at 16 volts)

Soundstream Mids/Highs in custom door panels (getting rebuilt soon)

Soundstream TA2.160 and TA2.400

Sky High and KNU wiring

3 Banks of Maxwell caps 

Winston Lithium (not a fan)

Bump4Life 250 Amp Alt. aka USAlternators

Soundstream Focus and Avenger Build Log

Instagram @p4linnovation

YouTube: Team Blowin Loud 

Link to comment
Share on other sites

In for info as I'm debating adding caps with my existing lithium batt

2000 Suburban 6 runs of 2/0

12 timpano audio mids,6 timpana audio tweets and 1 timpano compression horn per door 

8 banks of blue Maxwells + 260ah of Yin Long LTOs 

2 370 Amp Autotech Alts 

mids amps 2  Crescendo Skyway 3ks 

Tweet amp Crossfire 2000.4

sub amp: 4 Crossfire XT 8ks

Subs: 8 18 in Crossfires in a 4th order


Best Scores at events…

161.6@38hz DBdrag  sealed on the dash… 162.54 outlaw…161.14 Meca headrest 

 

 

Link to comment
Share on other sites

Here is my take on caps and batteries together

Batteries sit at a much lower voltage when not being charged than caps. If you charge a battery at 14.8 and remove the charging source it falls to say 13.

Capacitors in the same situation will remain at 14.8 for some time.

Since electricity is all about balance, every time you turn off the car the caps begin charging the battery with everything they can muster until the voltages equalize.

Essentially the caps will charge the batteries too hard and lead to their demise. If I understand right lithium is especially sensitive to this rapid overcharging

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
Nightshade 15s Wall Build
Magnum AB XFL 12s Build
Newest Magnum Build

Link to comment
Share on other sites

Correct me if I'm wrong but I think you have it backwards. I always thought caps discharged faster while resting

Kind of

We have a bank that had been sitting for 2 years which still rests at 8.5 volts. A battery in the same situation would be resting higher, I'm sure.

But I'm talking immediately off of charge a battery jumps back down around 2 volts, caps very slowly walk down

-Matt

2005 Dodge Magnum RT
JVC KD-AVX1

2 PPI S580.2

Obsidian Audio ST1 Horn Tweeters

PRV 8MB450s

Audio Legion 3500.1D

2 RE MT 18s

360 ah LiFePO4 Battery
SHCA 2/0

155.2 @ 29 hz



Kicker CVR 15's build
DD 3512e build
Mini T-Line Build
(6) 8s Build
Nightshade 15s Wall Build
Magnum AB XFL 12s Build
Newest Magnum Build

Link to comment
Share on other sites

You can run caps and regular agm batts together no problem. I'm wondering about lithiums

2007 Ford Focus SES Hatchback

Pioneer HU

4 Digital Designs 9515i's in a B pillar.

2 Soundstream XXX 15K's (running at 16 volts)

Soundstream Mids/Highs in custom door panels (getting rebuilt soon)

Soundstream TA2.160 and TA2.400

Sky High and KNU wiring

3 Banks of Maxwell caps 

Winston Lithium (not a fan)

Bump4Life 250 Amp Alt. aka USAlternators

Soundstream Focus and Avenger Build Log

Instagram @p4linnovation

YouTube: Team Blowin Loud 

Link to comment
Share on other sites

so just talked to kevin with Juice Box Batteries and he said you can run caps with a lithium

2007 Ford Focus SES Hatchback

Pioneer HU

4 Digital Designs 9515i's in a B pillar.

2 Soundstream XXX 15K's (running at 16 volts)

Soundstream Mids/Highs in custom door panels (getting rebuilt soon)

Soundstream TA2.160 and TA2.400

Sky High and KNU wiring

3 Banks of Maxwell caps 

Winston Lithium (not a fan)

Bump4Life 250 Amp Alt. aka USAlternators

Soundstream Focus and Avenger Build Log

Instagram @p4linnovation

YouTube: Team Blowin Loud 

Link to comment
Share on other sites

Mostly its a safety issue due the massive damage that could be done to you or your vehicle if there is a failure from either one and if you combine them and theres a failure your pretty much dead

With caps as long as you don't overcharge them you wont have issues. Pretty much same with the lithium. As long as you don't rub it too low or charge to high you should be fine. Plus the chemical makeup of the lithiums used In car audio is more stable. I was just trying to figure out if the caps could somehow damage the battery

2007 Ford Focus SES Hatchback

Pioneer HU

4 Digital Designs 9515i's in a B pillar.

2 Soundstream XXX 15K's (running at 16 volts)

Soundstream Mids/Highs in custom door panels (getting rebuilt soon)

Soundstream TA2.160 and TA2.400

Sky High and KNU wiring

3 Banks of Maxwell caps 

Winston Lithium (not a fan)

Bump4Life 250 Amp Alt. aka USAlternators

Soundstream Focus and Avenger Build Log

Instagram @p4linnovation

YouTube: Team Blowin Loud 

Link to comment
Share on other sites

Archived

This topic is now archived and is closed to further replies.

×
×
  • Create New...