As mentioned in an earlier post the LAA have produced a Technical Leaflet on
LiFepo4 batteries. Not all Lithium batteries are suitable. The ones listed
in the leaflet have been checked to make sure they are compatible and will
operate safely in a Rotax installation without further electronics. One
important but possibly obvious point to note. Most Lithium batteries have a
much higher cranking current capacity than an equivalent lead acid battery.
As a result most suppliers recommend a much lower capacity Lithium battery
as a direct replacement. Although a much lower capacity Lithium battery
will start your Rotax it won't keep you supplied with electrics for very
long if the alternator fails. Hence the restriction on the use of a small
Lithium battery in a Rotax 914 installation.
Regards
Brian Davies
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Peter Jeffers
Sent: 30 July 2016 09:11
Subject: RE: Europa-List: LiFeO4 batteries?
--> <pjeffers@talktalk.net>
Hi Clive,
Answer to item 5 is that the LAA do care a lot. You may recall issues with
Li/Fe batteries in the Boeing Dreamliner.
You also need to be aware that your current regulator on the Rotax engine is
not designed for charging Li/Fe batteries. I believe you will need some
added electronics to control this side of things.
Yes they are very light weight with superb performance but there are
additional problems and an enormous price tag for the moment at least.
You will probably require a Mod approval from the LAA.
Pete Jeffers LAA rep to the Europa Club
-----Original Message-----
From: owner-europa-list-server@matronics.com
[mailto:owner-europa-list-server@matronics.com] On Behalf Of Clive Sutton
Sent: 30 July 2016 08:42
Subject: Europa-List: LiFeO4 batteries?
--> <clive.maf@googlemail.com>
I need to replace my PC680 AGM battery. The weight advantage of choosing
one of the new generation Lithium iron phosphate batteries is stunning
(several kg). The weight-saving comes at a price premium of course.
Does any Europa owner have one of these LiFeo4 batteries in service and in
particular:
1) What is the typical life of these batteries (experience data preferred
over product information)?
2) What UK supplier did you use?
3) If you have a Rotax 912S, which battery did you choose?
4) As a result of the weight save, did you have to relocate the battery to
preserve W&B, and if so where did you site it?
5) Do the LAA care about the fitment of these batteries/any permit
complications?
All comment appreciated
Clive
G-YETI
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=458899#458899
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