A standard air cooled charger for 12S batteries, Air cooled chargers have a built in fan so produce some noise, that said this means the charger itself can be significantly lighter (ideal for group rides) and runs completely cool.

Depending on the size you pick depends on the connector that comes on it, 4A has a DC jack, 7A upwards comes with an XT60

suitable for 220V or 110V by changing the switch