Remove Battery and Check Charge

What happens here

The presenter then focuses on removing the battery from the truck. He uses a wrench to loosen and remove the positive and negative battery terminals. He puts on bright yellow gloves and uses a wrench to loosen the positive terminal. He then carefully lifts the DieHard battery out of the truck, places it in a Honda Pioneer UTV, and drives it to his new shop to check its charge level. Inside the shop, he connects the battery to a Schumacher battery charger. The charger initially reads 12.4 volts and then shows a 95% charge after being turned on. He deduces that the battery itself is not the primary issue, as it is nearly fully charged.

Goal: Determine if the battery is adequately charged.