Question regarding battery

[Sam_Boss260]

So with the new ute, I'm finding that it isn't starting on first kick. Usually starts on the second kick. Only once has it not started and I had to turn the key over again.

This is where I need some opinions and help.....

So, in order to eliminate issues with the charging system I've checked the charging system with the car running (at idle). result was 14.4 v. Then I checked the battery with the car off, and it was around 12.8 v.

Put the battery on a charger which has this rejuvenate function, which basically drains and rejuvenates first (takes an extra 24 hours).

Once the charger said that it was done, the battery was showing 12.97 v. Put it in the car and started the car, same thing second kick. With car idling output was showing 14.43v. Turned the car off and checked battery, 13.4 v and it was slowing dropping .01 volts at a time. So obviously losing charge.

Checked the battery this morning with the car sitting overnight and it came up as 12.45.

So my question is is the battery on the way out? Or is it an AU thing which starts on second kick? My option is to get another battery for $135 and just have that piece of mind that it is done.

Any suggestions?