Re: Amel is going lithium

Mohammad Shirloo

Hi Scott;


Very impressive numbers. I am familiar the Lithium battery technology and all the benefits you mention, since we have been using it in giant scale radio control airplane models (Up to 60% scale) for years.


The one major issue with lithium that has prevented us from making the change to Lithium on Kokomo, has been safety. There have been many cases of these batteries burning down models as well as houses, when the fire happened to occur in the house.


In most cases the issue has been misuse or equipment failure, that has led to overcharge/discharge but some that seem to have been without any external input and not during usage  As far as I have observed, , once the fire starts, it cannot be extinguished with standard firefighting equipment. It basically seems to need to burn itself out.


Do you know which lithium technology Mastervolt uses? (Lithium Polymer, ION, LIFE, or ?) Did you ever happen to address the safety and evaluate the hazards with this technology? What was your conclusion and how do you view the hazards associated with these batteries?


I would also be interested in seeing a picture of your solar setup, if you have one. Thanks for posting all the useful information and data.







Mohammad and Aty

B&B Kokomo

Amel 54 #099


From: <> On Behalf Of Porter McRoberts via Groups.Io
Sent: Tuesday, August 6, 2019 5:25 PM
Subject: Re: [AmelYachtOwners] Amel is going lithium


Very interesting re serial vs parallel. I do find a big drop in production with shading, much better days if the wind keeps the solar pointed towards the sun. I’ll have to run a bit more wire to the mppt. I’ll try that in NZ and see what we get. Thanks for the suggestion!!




Porter A54-152

Excuse the errors.  

Sent from my IPhone 

On Aug 6, 2019, at 2:18 PM, Scott SV Tengah <sv.tengah@...> wrote:


I guess you mean far from the panels to the mppt? 

Maybe you can experiment with parallel to see if you get higher output. I believe parallel is better than serial when you have shading on some panels and not others. 

I have the 3 pairs of wires from the panels to a switch in the aft lazarette.  Then one pair from the lazarette to the mppt which is behind the main switches in the passage berth. Of course the batteries are near there. 

Seems to be no problem with the distance as I'm getting up to 6500wh per day as you can see on the data I posted earlier. 
2007 A54 #69
SV Tengah

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