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Old 09-14-2020, 12:38 PM   #1
DocRecon
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Batteries & Voltmeters

Does anyone know if an upgraded/bigger battery is needed to run all the gauges typically used in a FI system along with running an aftermarket in-dash, amp, and sub-woofer? I bought a voltmeter to go in my triple gauge pod just to watch the levels because that seems like a lot of load on the battery.

IDK.....Batteries aren't my strong suit.
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Old 09-14-2020, 01:07 PM   #2
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Does anyone know if an upgraded/bigger battery is needed to run all the gauges typically used in a FI system along with running an aftermarket in-dash, amp, and sub-woofer? I bought a voltmeter to go in my triple gauge pod just to watch the levels because that seems like a lot of load on the battery.

IDK.....Batteries aren't my strong suit.
No for the gauges since they generally use very very little power. You may want something heavier depending on what your amp and sub are drawing though.
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Old 09-14-2020, 02:55 PM   #3
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If the battery is keeping up (if the car doesn't have a hard time starting), I wouldn't worry about it.
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Old 09-14-2020, 04:17 PM   #4
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Thank you, thank you!
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Old 09-14-2020, 09:42 PM   #5
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i haven't noted any issues at 900w rms... i believe others are running 1200w rms without issues on the stock hardware as well.
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Old 09-14-2020, 11:06 PM   #6
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Does anyone know if an upgraded/bigger battery is needed to run all the gauges typically used in a FI system along with running an aftermarket in-dash, amp, and sub-woofer? I bought a voltmeter to go in my triple gauge pod just to watch the levels because that seems like a lot of load on the battery.

IDK.....Batteries aren't my strong suit.
Always remember this, immediately after your engine is started, your battery becomes a load on the CHARGING SYSTEM. A bigger battery means a bigger load. Any accessories operating while your engine is running are also a part of that load. If you increase the load too much, then you may want to invest in a higher output alternator and heavier gauge wiring.

Do a search on "the big three" charging circuit upgrade for more information.
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Old 09-14-2020, 11:08 PM   #7
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i haven't noted any issues at 900w rms... i believe others are running 1200w rms without issues on the stock hardware as well.
Yep, unless you're listening to low frequency sine waves for extended periods of time at high volume.
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Old 09-15-2020, 01:47 AM   #8
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Yeah. A simple way to have a worry free bass thumping battery saver is to buy a capacitor for your amp. A .5 farad is good enough to keep away that light dimming effect when you hit that low bass.
A 1 or 2 farad is good for over 1000 watts
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Old 09-15-2020, 07:57 AM   #9
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You might want to check out this thread. There's a whole section on these issues.
https://www.ft86club.com/forums/showthread.php?t=29850
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Old 09-16-2020, 09:35 PM   #10
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LOL
Yeah. A simple way to have a worry free bass thumping battery saver is to buy a capacitor for your amp. A .5 farad is good enough to keep away that light dimming effect when you hit that low bass.
A 1 or 2 farad is good for over 1000 watts
https://forum.realmofexcursion.com/a...capacitor.html
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Old 10-12-2020, 11:36 PM   #11
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Thanks everyone. So far I haven't noticed anything like dimming or a hard start, and hope I don't.
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Old 10-14-2020, 03:24 AM   #12
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I've been running on a Shorai battery for 5 years now. 3 years of it boosted with a pioneer 4 ch power amp, 2 channels driving speakers, the other two bridged driving a sub. No issues whatsoever.

I recently however had to put in a new SHorai battery to replace it as it finally died on me. But 5.5 years for a 5lbs battery is not bad at all for 240$.
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