Secrets of A Marine Battery Charger Revealed

Ocean battery chargers are typically designed for a ‘marine’ environment however their design may be little different from non-marine chargers. The crucial element factor in your choice of a marine battery charger is its calculated usage or application. Marine batteries are usually not much totally different from non-marine batteries except that they may be more likely to be deep pattern, deep cycle and starting, lead acid, or sealed lead acid. They also may be constructed with materials which refrain from corrosion and have vibration dampening materials between the plates. Maritime 21700 Battery chargers don’t care about their environment, rather they are simply designed to distinguish between battery chemistry (flooded, gel cel, AGM – absorbed glass mat).

Here are the most important issues to consider when choosing a marine environment battery charger:

1 . Charger Ecosystem


If your boat is open and exposed to extreme weather conditions, you should choose a charger with a waterproof housing. When considering basement waterproofing, a specification to look for is ingress protection rating. A strong ingress protection rating of IP68 would be totally dust particles tight and provide protection against prolonged effects of immersion in mineral water under pressure. These units are usually fully sealed, safe to maintain onboard year round, and can be permanently left in a damp surroundings. They may be described as fully potted which means that the electronics will be encapsulated in resin.

Your boat application may not demand waterproof housing. If your boat is large with an claustrophobic cabin, where you can insure no direct contact with water, you will choose a battery charger that is not waterproof.


If your battery’s natural environment experiences prolonged, significant vibration, you should look for a vibration facts specification for the any unit you are considering. Vibration can be addressed through a rugged case or through vibration dampening products used in construction.


If your environment experiences frequent or simply severe temperature changes, you should choose a battery charger that offsets for temperature changes. This is important to insure the proper receiving and maintenance of your battery.

2 . Charger Output

Charger productivity can be described in two ways; amps and financial institutions.

The amps or power output of the charger have to again be determined by applications.

a. Low Output tutorial (6 amps or below) A low output charger may perhaps be applicable for maintenance use or any low amp an hour battery application.
b. Medium Output – (9 – 15 amps) A medium output charger would be applied for medium use or occasional use perhaps only on weekends for a trolling motor.
c. High Output — (15 amps or above) 1) A high output charger would be used in high amp hour battery applications (150 ah for example) or any situation where repeated immediate recharges are called for.

Banks (physical outputs) determine how lots of batteries can be charged simultaneously by the battery charger. Single banking companies are used for a single battery while multiple banks can be used to bill and maintain 2, 3 or more batteries simultaneously. A key spec for multiple bank chargers is whether it has independent components (a separate positive and negative connection per bank) and each bank has its own microprocessor to control charging. Independent signals allow batteries of different size, type, and charge state to be connected simultaneously to the same battery charger.

3. Power Chemistry

Batteries used in marine applications may be more likely to often be deep cycle, flooded, Gel Cel or AGM. They need to determine your battery’s chemistry and carefully select a component that supports that chemistry. Particularly in the case of Gel Cel batteries, it’s important to make sure your battery charger is a true gel cel charger. Some chargers that claim to be gel cel chargers are only AGM or deep cycle.