Just buy a batt dont try to make 1 and get dqd for it are you going to mass produce the battery if not dont bother. To make you battery legal will cost you to much trust me i went and spent 3 hours today talking about batteries with a good source. P.s yes a 2150 is legal why wouldnt it be it is sold for automotive use Ross.

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Team AmericanBass Canada
Loudest.......
Loudest.......
XXX time Iasca world recod holder
Multi time Canadian record holder
Loudest ss 1-2, 3-4 for many years
the list could go on.
2007
1 12" treo 2500rms 151.3 st b
2 10" Kicker L7 2 Ab 500.1 151.4 st a