Here is a excellent source from the manufacturer themselves
Motorcyle battery charging and discharging information guide
How Many Amps?
Applying a charging current to a battery, without overheating it, is called the “natural absorption rate.”
Because of their smaller size, when compared to automotive types of batteries, powersports batteries are more sensitive to how much current they can safely absorb. When charging a motorcycle or other small battery, the battery charger should not exceed 3 amps. Most automotive types of battery chargers are not suitable due to higher current output. While maintaining a battery at its full state-of charge will ensure optimum life, overcharging may significantly reduce it.
Always verify battery state of-charge before charging, and 30 minutes after charging. When a battery charger has been disconnected from the battery for one to two hours, a fully charged Conventional battery should read 12.6 volts (12.8 volts with Sulphate Stop) or higher. AGM batteries may have slightly higher voltage readings after a full charge.
Do Not Overcharge. Because of the characteristics of an AGM battery, too much of a boost charge, or overcharge will decrease the volume of electrolyte. The longer the overcharge time, the greater the drop in electrolyte and starting power. Because the battery is sealed, water can’t be added to make up the difference in the loss of electrolyte. In addition, overcharging can warp cell plates making future charging difficult or impossible. To prevent over charging, track charging times carefully, or ideally, use one of Yuasa’s automatic chargers. Always stop charging if the battery case becomes too hot to touch. Let it cool down 6 to 12 hours and resume charging. Charging times will vary depending on type of charger and the size of the battery.
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The above was copied from that link. The reason why I posted it, motorcycle specific chargers do WHAT----Yes they have a limited to 3 amp charge current.
So we have numerous discussions about battery types and amp hour ratings and CC amps.