No problem, their charger can supply 60A current, which means your battery probably needs 1-2hours for a full charge. But usually you won't charge your battery so fast, you'll trickle charge it for one full day. Don't mistaken ampere and voltage. As long as the charger voltage and your battery voltage is the same, it's ok. Your rating 75AH means it could supply 75 amp for one hour, 37.5A for two hour, etc. charger capacity means the amount of amps the charger could produce. 60A is a lot of juice for a charger. Usually you'll want to charge your battery at 10A, at most, to avoid damage.
Usually if your battery will needs recharging, it's either your alternator is faulty, your car is using more power than the alternator can produce, or the battery is faulty and can't accept charges any more. Or you left your car for few months (vacation?)