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Father and Son Project: 2002 Yukon - Rockford Fosgate Sound System Install - ROUND 2 - NEW Amp Rack installed - FIRED UP! page 23


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Crankin' the Voltage - More Volts = More Watts? #Mechman Hairpin 370a Alternator & AVBM II - SMD D'Amore Engineering​ AMM-1 Audio Multimeter - Tested in "Live Power Mode" before and after - Results inside (Father/Son sound system install Video 8)

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just curious how did u attach that plexi on the vu meter?

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How come you are charging at 15.3V? I also noticed you do the same in the tahoe. It specifically says in the XS power manuals not to charge above 14.4V ie 2.4V per cell

Can you get away with it in the car as there is always a draw (the cars electrical system, ECU etc) rather than it just being sat on a charger. Or do you just turn up the voltage for demos to account for the drop?

When I had my D3100 out the car and on an adjustable trickle charger, I set it to 14.4 and when it was fully charged I actually heard a tiny bit of gas escaping so I backed it off to 13.5 (recommended float charge). But then that had no load on it.

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just curious how did u attach that plexi on the vu meter?

it is glued in from the reverse side :)


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How come you are charging at 15.3V? I also noticed you do the same in the tahoe. It specifically says in the XS power manuals not to charge above 14.4V ie 2.4V per cell

Can you get away with it in the car as there is always a draw (the cars electrical system, ECU etc) rather than it just being sat on a charger. Or do you just turn up the voltage for demos to account for the drop?

When I had my D3100 out the car and on an adjustable trickle charger, I set it to 14.4 and when it was fully charged I actually heard a tiny bit of gas escaping so I backed it off to 13.5 (recommended float charge). But then that had no load on it.

did you watch the video? i clearly explained that the manufacturer doesn't recommend this. However i have been at 15.5+ volts on my batteries for YEARS with no problems. I don't condone it nor do i work for the manufacturer of the batteries so do so at your own risk (not you, but anyone reading this).

that being said, like i said, i have never had a problem. 15.3 is safe IMO.

as for you "charging" your battery at 14.4v and hearing it "gas escaping", the only thing i can say about that is it don't sound like it is "charging" at all. It sounds more like a power supply if you are able to tell it "14.4" and then physically back it down to 13.5 on your own. I have never seen a "trickle" charger that you choose the voltage. I recommend getting an xs power intellicharger so you can get a PROPER charge that knows when to stop charging. It don't sound like your "charger" knows when to stop (if it is making noise). Usually that only happens if you leave a power supply on all night, not a charger.


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How come you are charging at 15.3V? I also noticed you do the same in the tahoe. It specifically says in the XS power manuals not to charge above 14.4V ie 2.4V per cell

Can you get away with it in the car as there is always a draw (the cars electrical system, ECU etc) rather than it just being sat on a charger. Or do you just turn up the voltage for demos to account for the drop?

When I had my D3100 out the car and on an adjustable trickle charger, I set it to 14.4 and when it was fully charged I actually heard a tiny bit of gas escaping so I backed it off to 13.5 (recommended float charge). But then that had no load on it.

did you watch the video? i clearly explained that the manufacturer doesn't recommend this. However i have been at 15.5+ volts on my batteries for YEARS with no problems. I don't condone it nor do i work for the manufacturer of the batteries so do so at your own risk (not you, but anyone reading this).

that being said, like i said, i have never had a problem. 15.3 is safe IMO.

as for you "charging" your battery at 14.4v and hearing it "gas escaping", the only thing i can say about that is it don't sound like it is "charging" at all. It sounds more like a power supply if you are able to tell it "14.4" and then physically back it down to 13.5 on your own. I have never seen a "trickle" charger that you choose the voltage. I recommend getting an xs power intellicharger so you can get a PROPER charge that knows when to stop charging. It don't sound like your "charger" knows when to stop (if it is making noise). Usually that only happens if you leave a power supply on all night, not a charger.

Yeah course I watched it :) I just thought you had some inside information from XS that's all! I know you can charge AGMs a bit higher than standard lead acids but didn't know that much! Don't worry i'll be careful

Yeah I shouldn't have called it a trickle charger, it just had an adjustable power supply on it acting as a trickle charger. The battery is fine now it was just when I got it I put the power supply on it at 14.4. Then backed it off to 13.5 and left it for a few months while I got the rest of my equipment. 7 year old battery that still floats at 13.1 - XS FTW!

Daniel Brill-Edwards - Representing English Bassheads!!

Old Build Log - http://www.stevemeadedesigns.com/board/topic/94637-vw-golf-mk3-1996-build-from-england/

New build coming soon with SMD V1 #99

YouTube Channel - http://www.youtube.com/brilledwards

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How come you are charging at 15.3V? I also noticed you do the same in the tahoe. It specifically says in the XS power manuals not to charge above 14.4V ie 2.4V per cell

Can you get away with it in the car as there is always a draw (the cars electrical system, ECU etc) rather than it just being sat on a charger. Or do you just turn up the voltage for demos to account for the drop?

When I had my D3100 out the car and on an adjustable trickle charger, I set it to 14.4 and when it was fully charged I actually heard a tiny bit of gas escaping so I backed it off to 13.5 (recommended float charge). But then that had no load on it.

did you watch the video? i clearly explained that the manufacturer doesn't recommend this. However i have been at 15.5+ volts on my batteries for YEARS with no problems. I don't condone it nor do i work for the manufacturer of the batteries so do so at your own risk (not you, but anyone reading this).

that being said, like i said, i have never had a problem. 15.3 is safe IMO.

as for you "charging" your battery at 14.4v and hearing it "gas escaping", the only thing i can say about that is it don't sound like it is "charging" at all. It sounds more like a power supply if you are able to tell it "14.4" and then physically back it down to 13.5 on your own. I have never seen a "trickle" charger that you choose the voltage. I recommend getting an xs power intellicharger so you can get a PROPER charge that knows when to stop charging. It don't sound like your "charger" knows when to stop (if it is making noise). Usually that only happens if you leave a power supply on all night, not a charger.

Yeah course I watched it :) I just thought you had some inside information from XS that's all! I know you can charge AGMs a bit higher than standard lead acids but didn't know that much! Don't worry i'll be careful

Yeah I shouldn't have called it a trickle charger, it just had an adjustable power supply on it acting as a trickle charger. The battery is fine now it was just when I got it I put the power supply on it at 14.4. Then backed it off to 13.5 and left it for a few months while I got the rest of my equipment. 7 year old battery that still floats at 13.1 - XS FTW!

i don't have this forum because i am 6'2", muscular and good looking. I know a few things too. (my Judge Judy reference) LOL...ya i figured as much bro, because i have left mine on a power supply (not on purpose) and it did the same thing. A decent "smart" charger of any brand should know when to say when :D :D


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nice video steve! I'd like to add 2 bits of info to help educate people.

1. this only applies to amps with unregulated power supplies. higher end JL Audio or Arc audio amps, just to name a few have regulated power supplies in whihc input voltage has no effect on the output. I didnt have audio on so not sure if you mentioned that. but nice video.

2. I think its also important to point out to people who CAN'T HOLD that voltage that boosting their voltage to 15v instead of 14v only to drop to 12 volts since they are exceeding output of alternator does nothing for them. if you dont hold the voltage continously, it does nothing for you.

one more thing to one of the posters above @ daniel brill, 12v batteries can be safely charged over 15v depending on conditions, state of charge, and duration. there are many many variables when charging batteries. the xs power intellicharger or ctek smart chargers attempt to cover all the bases when charging a battery. a car alternator can only do so much and is not a proper way to fully charge a battery, even if you have a high output alt.

your son is very lucky to have that set up steve! tuned in for more! love the test vids

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