There are several kinds of marine battery chargers, such as gel, flooded, open cell, and lithium ion. Each kind of battery has its own best charging profile and reaction to environmental temperature. The best on board marine battery chargers employ digital technology for the utmost efficiency and maximum life of your expensive marine battery. In most cases, the manufacturers provide you with a charger compatible with your battery type. Check this- https://www.landroverbar.com/best-3-bank-onboard-marine-battery-charger/
For those that may not be familiar with the different kinds of battery, a brief explanation would be in order. The two most common types are discharged gel and flooded lead acid battery. While a properly designed marine battery charger can be capable of charging both of these types, it is often necessary to use a special charger with a higher capacity just for the special purposes mentioned above.
When shopping for a marine battery charger, always keep in mind what kind of charger you need. Do you need one that can charge multiple batteries simultaneously? Are you looking for a portable charger to take with you while you travel? Or perhaps you want the kind of charger that you can fit right into your boat’s console? If so, it pays to do some research and to check latest price and reviews online before you make any purchase.