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<blockquote data-quote="Doxquzme" data-source="post: 8872637" data-attributes="member: 689267">the big three is always a good idea. If you&#039;re only seeing issue during periods of heavy BASS (common) and not all the time, then a small AGM or LiFePO4 in the trunk should go a long way to improve that situation. I&#039;ve spent the better part of the last year studying various 2nd&nbsp; battery options. For smaller-ish systems, one of these is fine. 100AH, 100a continuous BMS, 280 amp 7 second burst/surge rates, no isolator needed, sealed maintenance free. Run another 1/0 ground from the AGM under the hood to the rear of the car parallelto the pos already in, parallel ground, all set.<a href="https://www.bestcaraudio.com/car-audio-myths-you-cant-ground-a-car-audio-amplifier-to-the-battery/" target="_blank">https://www.bestcaraudio.com/car-audio-myths-you-cant-ground-a-car-audio-amplifier-to-the-battery/</a>LiFPO4[URL unfurl=&quot;true&quot;]https://www.litime.com/products/litime-12v-100ah-mini-lifepo4-lithium-battery-upgraded-100a-bms-max-1280wh-energy[/URL]&nbsp;or, if you gots the room, got a BNIB one of these, $200 to your doorstep (including a smart charger)[URL unfurl=&quot;true&quot;]https://www.litime.com/products/pre-order-litime-12v-100ah-lifepo4-lithium-battery-best-rv-marine-off-grid-solar-battery-4000-deep-cycles-built-in-100a-bms-like-new[/URL]Overkill but great[URL unfurl=&quot;true&quot;]https://maverickscustommotorsports.com/products/limitless-lithium-batteries-noli-sodium-12ah-limitless-lithium-battery?variant=41191126499411&amp;currency=USD&amp;utm_medium=product_sync&amp;utm_source=google&amp;utm_content=sag_organic&amp;utm_campaign=sag_organic&amp;srsltid=AfmBOoov8-1wGfkEv383zIF57Bv1fKc-3pVh1m_jiHqvloj2Bf3PtL-4Yb8&amp;com_cvv=8fb3d522dc163aeadb66e08cd7450cbbdddc64c6cf2e8891f6d48747c6d56d2c[/URL]I&#039;ve seen these recommended but could not find out what the BMS limiter is. It says up to 500a peak, but you would want to contact the company and make sure that it will handle like 100a constant and 2-25A burst. Pretty inexpensive[URL unfurl=&quot;true&quot;]https://www.amazon.com/dp/B091P9QXX7/?tag=caraudiocom-20[/URL]</blockquote>

[QUOTE="Doxquzme, post: 8872637, member: 689267"] the big three is always a good idea. If you're only seeing issue during periods of heavy BASS (common) and not all the time, then a small AGM or LiFePO4 in the trunk should go a long way to improve that situation. I've spent the better part of the last year studying various 2nd battery options. For smaller-ish systems, one of these is fine. 100AH, 100a continuous BMS, 280 amp 7 second burst/surge rates, no isolator needed, sealed maintenance free. Run another 1/0 ground from the AGM under the hood to the rear of the car parallelto the pos already in, parallel ground, all set. [URL]https://www.bestcaraudio.com/car-audio-myths-you-cant-ground-a-car-audio-amplifier-to-the-battery/[/URL] LiFPO4 [URL unfurl="true"]https://www.litime.com/products/litime-12v-100ah-mini-lifepo4-lithium-battery-upgraded-100a-bms-max-1280wh-energy[/URL] or, if you gots the room, got a BNIB one of these, $200 to your doorstep (including a smart charger) [URL unfurl="true"]https://www.litime.com/products/pre-order-litime-12v-100ah-lifepo4-lithium-battery-best-rv-marine-off-grid-solar-battery-4000-deep-cycles-built-in-100a-bms-like-new[/URL] Overkill but great [URL unfurl="true"]https://maverickscustommotorsports.com/products/limitless-lithium-batteries-noli-sodium-12ah-limitless-lithium-battery?variant=41191126499411&currency=USD&utm_medium=product_sync&utm_source=google&utm_content=sag_organic&utm_campaign=sag_organic&srsltid=AfmBOoov8-1wGfkEv383zIF57Bv1fKc-3pVh1m_jiHqvloj2Bf3PtL-4Yb8&com_cvv=8fb3d522dc163aeadb66e08cd7450cbbdddc64c6cf2e8891f6d48747c6d56d2c[/URL] I've seen these recommended but could not find out what the BMS limiter is. It says up to 500a peak, but you would want to contact the company and make sure that it will handle like 100a constant and 2-25A burst. Pretty inexpensive [URL unfurl="true"]https://www.amazon.com/dp/B091P9QXX7/?tag=caraudiocom-20[/URL] [/QUOTE]

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