Does A Marine Battery Come Charged. Were going to cover both ways. A dated sticker on the top of the battery will indicate the last known verifiable charge.
Modern car batteries are charged prior to being sold. Use a charger with Multi-Stage Charging for a safe and fast charge. If you dont already have one buy yourself a smart charger with an max output of between 5 and 15 amps.
If your battery charge is below 12 volts there is a big chance that it is not fully charged yet.
These side reactions are not always detrimental but it does mean that instead of all the energy being stored indefinitely inside the battery cell some can be lost in powering these. If the battery is your cranking battery and it will start your engine you could get by with just installing it if you run the engine a lot. Marine Starting Batteries provide quick but powerful spurts of energy over short periods of time and are designed to start the engine and be rapidly recharged by the engine alternator. Only if the vehicle is used sparingly may it be necessary to occasionally charge the battery or put it on a battery maintainer that puts a small float charge on the battery.
