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| The Pub For General Automotive Related Talk |
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05-11-2009, 11:14 PM
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Banned
Join Date: Aug 2009
Posts: 382
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What should the voltage across the battery terminals read on a brand new battery installed into a car? Is it meant to begin at the battery's current off-the-shelf voltage (12.5) and as it charges, climb up until it matches the car's electrical system (13.8)? These measurements are made when engine is running btw.
I've just installed a new battery, and the voltage at the terminals with engine on, began at 12.5. After a short 5 minute drive, it was climbing towards 12.8. Shouldn't the voltage at terminals be already at around 14v, as soon as a new battery is installed and engine is turned on, or is everything ok? From inside the car (cig lighter socket), there's a healthy 13.8v however, regardless of what the battery terminals are at. Last edited by barra265t; 05-11-2009 at 11:23 PM. |
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Battery Voltages
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