Hybrid boat batteries are used in boats that can get their power either from a fuelled power source (like a diesel engine) or via a stored energy source (such as a battery bank and electric motor).
The hybrid system works on the same basis as a generator, whereby the power unit is placed between the engine and the hydraulic pump that drives the boat. The propeller is driven by diesel propulsion, allowing the hybrid system to recharge the 48 volt drive batteries. Then, when the diesel engine is turned off, the electric engine from the 48 volt drive batteries is driven by electric propulsion.
The energy is controlled and converted independently by an electronic management unit and can be used to either power the electric motor or to recharge the batteries. The hybrid power unit is driven through a centrifugal clutch when using the diesel engine and so acts like a generator. It can then work as an electric motor to propel the boat instead of using the engine.
Types of Hybrid Configuration
There are three main types of hybrid configurations for boats: diesel/electric, serial hybrid and parallel hybrid, though there are a lot of variations. The best choice of hybrid configuration will depend on the type of boat and how it is used.
As well as the environmental and cost benefits, here are additional advantages to using a hybrid system. For instance having both types of power at your disposal means you can use the battery when you need to be quieter and the diesel engine if you need a lot of power, for instance in a strong current or wind, so you get the best of both worlds. And the batteries are recharged using the electric drive when running the combustion engine. Both main drive [48v] and domestic [12v] boat batteries can also be charged via a charger that is plugged into the mains shore supply.
Choosing Hybrid Boat Batteries
If you already have a hybrid battery on your boat then making a note of the details of that battery will make it easy to choose a replacement. If you want to increase the capacity of your battery then you will need an idea of how much extra you want.
If however you are planning to convert to hybrid power, you will need some additional information. These include the details of the electric motor, the charger facilities available and your expected cruising time in hours.
Traction vs Leisure Batteries
You can discharge traction batteries down to a point where there is only 20% left, but leisure batteries can only be discharged down to about 50%. This means that you will get more power to use from a traction battery than from a leisure battery with the same rated amp hour capacity.
Maintaining Hybrid Boat Batteries
The batteries we supply are easy to maintain. Fully automatic topping up and gas venting
systems are available together with all the equipment required to maintain your system.
Don’t allow a traction battery to discharge below 80% and charge it fully each time to extend the battery life.
Our batteries and workmanship have a warranty for a specific time frame which is based on the relevant manufacturer’s warranty. We also offer a service back up. Our technicians have fully equipped mobile workshops and are experienced in finding any faults and repairing them. They are also able to refurbish and install batteries as well as offer expert advice.
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Getting Your Hybrid Boat Batteries Fitted
If you are planning to fit the batteries yourself we are very happy to discuss what is involved with you. We are also able to fit the batteries for you providing your vessel is accessible. We would need to have enough room to manoeuvre around the boat in order to install the batteries and will also need parking for our mobile workshop. We are unable to work on the street and will require permission from the landowner in relation to where the boat is situated.
The Ecobat Promise
We provide our customers with specialist on-site industrial battery advice, a wide choice of industrial power storage products and a single source for battery installation, maintenance and repair.