Re: Anyone else have this battery issue?
Theres no reason the voltage should fluctuate so much, but just in case I will keep an eye on mine tomorrow and see what happens, but Im pretty sure it shouldn't change much from 14v unless you are flipping accessories on and off. If the battery is good I would take a closer look at the alternator, sometimes they test ok but aren't. When the alternator went out on my old ZJ the voltage fluctuated like that.
My Jeep: 2001 Grand Cherokee Limited, 245/65R17 Falken Rocky Mountain ATS, K&N drop in air filter, Bilstein HD's. De-badged, eagle-eye LED Tails & LED 3rd brake light, Addco front and rear sway bars, Superchips tuned & TM snip, interior 6k LED's, Gen3 ccfl projectors with Volt 6k HID lows, akebono brake upgrade with R1 Concepts premium rotors.