Is this normal?

[Crownvicon28s 10+ year member]

My voltage stays at 14.2-14.1 at the front battery but drops to 13.7-13.6 full tilt. So I'm losing a half a volt from front to back. Is this normal and if not how do I fix it?

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[Popwarhomie 5,000+ posts]

Need to give some info..

What are you running?

 

[Crownvicon28s 10+ year member]

275 amp alt, 300 ah of battery, 4 runs of 0 gauge, big 3, all grounds to the frame. US amps md3d on a Z v3 15. Gonna run 5k to two so I want to make sure my electrical is ok.

 

[Crownvicon28s 10+ year member]

Should have been more clear. I have two pos and two neg runs and this voltage is at the bass amp.

 

[nadcicle 10+ year member]

CCA or OFC for your runs? How long would you estimate your runs?

 

[Crownvicon28s 10+ year member]

2 OFC and 2 CCA runs. 15ft long.

 

[los33]

The cca is what causes the minimal loss, it will not handle high current constantly at full tilt.