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Assuming we're talking lithium.


I've installed a 12 cell bank of yinlong cells in a customer car running around 5kWRMS of bass and 1kW of mids/highs, with a HO alt, voltage is stable, no issues whatsoever, I'd say start with a 6 Cell and see if your voltage and power is fine, if not add 6 more. 


I'd like to see more opinions from others on this forum if they have the time to give an insight.

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On 3/9/2024 at 11:18 AM, BeachedWhale269 said:


Im planning to upgrade my car audio system to about 6k rms. I have the big 3 kit installed, planning on getting a 320 amp alternator. I dont know how many AH in batteries I need for this build. Can anyone help me with the calculations?

There is a rule of thumb you can use... Iv used this rule of thumb for a while and ran as much as 24kw. You will see in the real world you can get away with doing different, but as a starting point, it works.


100a of alternator for every 2000w, so you are good there, 300a of alt for 6000w.

100ah of battery for every 2000w, so you want to shoot for a good manufactured battery and about 300ah.

Best Score to Date : 160.5 dB Outlaw (47Hz)[4 XM 15's & 2 Taramps Bass 12k's]

BL :  http://www.stevemeadedesigns.com/board/topic/147800-chevyboy95s-4-15s-7krms-wall-1533-db-on-half-power/
YouTube: http://www.youtube.com/hitemwiththeflex/

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