How To: Secondary battery and voltage stabilizer
Returning to some projects that've been on the backburner for too long, though I'd document the uninterruptible 12V power I'm installing for the benefit of electronics, communications and voltage stabilizing.
The components are
D250S battery isolator - this charges (and powers) a secondary battery (and circuit) when the primary battery and circuit show a full-charge voltage under charging conditions. It does not allow the primary circuit to draw power from the secondary battery (i.e. starting crank). In order to do this, for instance as an emergency jump battery, bypass switches are needed. It does not load the primary circuit unless the alternator is running and primary battery fully charged
One or Two 12V sealed maintenance free automotive batteries. 18Ah as pictured.
Cabling of course - 100A copper
Boot under-floor mounting solution images attached. The OEM rear floor support is removed to be replaced with the mounting solution. The support structure leaves room for two batteries on the left and right, with the center space being for the isolator. In the last image you can see carpet underlay cut to size in order to raise the floor. Carpet underlay is also underneath the mounting solution to provide cushioning. Without the mazda OEM plastic boot-floor insert, the raised floor has the appearance of larger gaps on the left and right. With the OEM boot-floor insert, the only indication that the floor is not in stock position is more difficult access to the cargo hooks.
More as I progress...
Last edited by Nexus; 01-04-2010 at 02:12 AM.
"Blue Meanie" 2007 Aurora Blue MPS 3 - 18x8.5+44 SSR GTX01 - 235/40R18 Michelin PS5 - 3.5" ETS TMIC - CPE stg 2 mount - HKS/CPE BPV - 2XS inlet - 2XS short shift - Corksport turbo manifold - HT 98 octane tune - Leather/Aluminium handbrake - Momo shifty knob - 7" touchscreen - JDM Mazda Retractable dashtop screen assembly - Bespoke Raspberry Pi Android based GPS/Carplay and instrumentation - 36AH reserve battery and C-TEK isolator - TEIN Street Advanced coilovers 1" drop - Superpro bushings - 220Kw/410Nm.
"Lipstick" 2013 Velocity Red MPS 3 - 18x7.5+48 Enkei RPF1 -225/40R18 Federal RS-RR - CPE TMIC - COBB inlet - CPE stg 2 mount - COBB Stage 1 98 octane tune - COBB shifty knob - 2XS short shift - 2XS turbo manifold.