Originally Posted by Yachts66
Still hoping to hear from someone using these alternative batteries! Anybody out there?
Thomas, feel free to ask anything you like!
I am probably one of the world leaders in LiFePO4
battery technology having been doing this for more than 3 years already.
I have several happy customers (boat owners as well as boat builders) who are using LiFeTech LiFePO4 batteries as either a superior/more efficient replacement for lead acid batteries for house power or as an electric motor propulsion
battery (or both of the above).
Just a couple of projects ether completed or close to completion powered by LiFeTech LiFePO4 batteries include-
"Natural High Adventures"- Natural High Adventures - Warren's Blog
This boat is powered by twin Torqeedo Cruise
boat motors and a LiFeTech LiFePO4 battery bank.
"Xhale" was launched about 2 months ago and is also powered by twin Torqeedo motors and LiFeTech batteries.
"Room With A View" is a very well known 55ft Australian racing catamaran
and is based in the Whitsunday Islands in the Great Batteries Reef. After more than 18 months out of the water
conversion is almost complete. RWAV is the only electric boat project
I have been involved with to date which will have triple electric propulsion
motors (3x Torqeedo Cruise
4 motors). Custom mounts have been made to fit these motors on each hull
and the centre pod motor
will drop down on rails.
The 48V 240Ah HPS series LiFeTech battery bank (as pictured) will provide power for the propulsion motors, house power via DC/DC converters and mains power via an inverter
. The LiFeTech batteries have amongst the fastest charge capability of any of the LiFePO4 battery manufacturers and the batteries when 100% discharged can be brought back to greater than 90% capacity in less than 15 minutes. Of course the power required to charge the batteries at such as fast rate is generally not available.
RWAV will have three charging
1) A high power 2kW dedicated LiFePO4 charger for shore power charging
where available. This is the most powerful charger which can be used from shore power
2) A Yanmar diesel
motor driving a custom designed triple 48V 90Ah alternator
set up. The alternators have been specifically provided with regulators for optimal charging of the LiFeTech batteries.
The battery bank is monitored and any errors or faults can be diagnosed by laptop
computer from inside the boat. The batteries have intelligent control and can stop and start the genset directly via the data signals provided at the battery (signals are generated at the battery for complete state of discharge and complete state of full charge. These signals can drive a relay or contactor for external automatic control). Each battery is pre-programmed in the factory with a unique ID number. The owner of the boat can communicate via his laptop
to any battery individually and can see a log of total accumulated battery charge cycles, the actual internal voltage of each cell in each battery pack to 0.01 of a volt and any errors for over charge, over discharge and over temperature. The data cables
joining each battery in the photo
are for the battery communications
so with these batteries you have cables
connecting each battery for both power as well as data.
Feel free to ask my professional advise. Asking questions costs nothing!