New Car Battery Not Fully Charged. The most obvious reason why your battery wont charge when your alternator is brand-new is that the problem is with the battery itself. The battery lasts longer if the vehicle is driven daily and the battery is kept fully charged.
When stored properly a detached car battery can last up to six months. My car has 200000 miles. A fully charged car battery voltage should be 126v or above this is with the engine off.
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Your battery will drain faster when its connected to your vehicle than when its disconnected. I Remember a time when Caterpillar batteries came without electrolyte in themwas replacing a bad batteryI told a higher up we needed to put acid in it he insisted. What else could be wrong. Battery wont fully charge.
