i want to add a second battery to my system. how do i properly wire the second battery? i think i have to wire the positive from the hood to the positve to the amp and the negative of the second battery to ground? do i wire it like i would wire a capacitor? i tried wiring it up the opposite way and blew a capacitor and caught on fire.
Replies (3)
P0werLifter on 02/13/2005 03:30:13
I'm not sure exactly what your talking about here as far as your therory on wiring this battery up, but i know one thing..its not correct.
Im assuming you want to run dual batteries (1 for the audio system and 1 for the stock electrical systems correct).
If this is the case, make sure your Alternator is up to par 1st b4 added a second battery. Another battery will put more of a load on the alt.
As far as supplies, you'll need to get a Battery Isolator (its like a relay that seperates the 2 systems apart) You can find these on ebay or at car audio shops. Then you just follow the directiongs (pretty explanitory) and hook it up like a regular batt if i remember correctly.
MrBrownstone on 02/14/2005 14:28:04
The real question is why are you adding a 2nd battery?
It's only valuable if your are either:
DB Dragging
Playing for a long time with the engine off
In #2, you wire it with a dual battery isolator. Basically, when your 2nd batter is full, it flips off...saving you current loss of continuously charging a full battery (saves ~10 amps of alternator power)
In #1, you wire it in parallel, and both batteries are charged at the same time. To be honest, having multiple batteries for your car is unnecessary unless you are burping it for 1/2 second in a competition. After that, you are wasting money.
I'd wire it by leaving the 2nd battery out of the system entirely.
Pinch on 02/14/2005 16:20:00
FYI The reason you blew your cap. is because you wired your dual battery system to run at 24 V. This is, of course, assuming that when you said you tried it the "opposite" way you meant you wired them in series. In a series connection, you add the voltages of the two, three, or however many batteries you are using in the situation. If I had to guess, your capacitor was designed to operate between 10 and 20 V max. Given that your average battery voltage may be upwards of 14 volts per battery, that means you may have sent 28 volts at your cap. Hehe poor lil' fellar.
Pinch
Replies (3)
P0werLifter on 02/13/2005 03:30:13
I'm not sure exactly what your talking about here as far as your therory on wiring this battery up, but i know one thing..its not correct.
Im assuming you want to run dual batteries (1 for the audio system and 1 for the stock electrical systems correct).
If this is the case, make sure your Alternator is up to par 1st b4 added a second battery. Another battery will put more of a load on the alt.
As far as supplies, you'll need to get a Battery Isolator (its like a relay that seperates the 2 systems apart) You can find these on ebay or at car audio shops. Then you just follow the directiongs (pretty explanitory) and hook it up like a regular batt if i remember correctly.
MrBrownstone on 02/14/2005 14:28:04
The real question is why are you adding a 2nd battery?
It's only valuable if your are either:
DB Dragging
Playing for a long time with the engine off
In #2, you wire it with a dual battery isolator. Basically, when your 2nd batter is full, it flips off...saving you current loss of continuously charging a full battery (saves ~10 amps of alternator power)
In #1, you wire it in parallel, and both batteries are charged at the same time. To be honest, having multiple batteries for your car is unnecessary unless you are burping it for 1/2 second in a competition. After that, you are wasting money.
I'd wire it by leaving the 2nd battery out of the system entirely.
Pinch on 02/14/2005 16:20:00
FYI The reason you blew your cap. is because you wired your dual battery system to run at 24 V. This is, of course, assuming that when you said you tried it the "opposite" way you meant you wired them in series. In a series connection, you add the voltages of the two, three, or however many batteries you are using in the situation. If I had to guess, your capacitor was designed to operate between 10 and 20 V max. Given that your average battery voltage may be upwards of 14 volts per battery, that means you may have sent 28 volts at your cap. Hehe poor lil' fellar.
Pinch
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