Instead of "approving" individual brands or types
of LiFePO4 it would be smarter to simply require
a BMS, either internal or external that protects
the battery against over/under temp, over under
charge/discharge and balances the cell voltages.
I note the 18 A-H LiFePO4 weighs about the same
Hmmm looks like the fusion battery most likely to
be fitted to gliders is No Longer Available and the rest are on sale.
I wonder why?
Mike
At 11:57 AM 2/1/2019, you wrote:
So the approval process is typically vague. I
doubt anyone is going to give you their proprietory on board circuitry.
So the approval process is typically vague. I
doubt anyone is going to give you their proprietory on board circuitry.
Any LiFePO4 battery with a built in BMS should do
much the same thing. EarthX actually have two
redundant BMS built in but they are designed to
start engines and be charged in
If you want to use them, submit a request to the CAD or either of the DCADs.
(Note: the airworthiness team is very reluctant to have inflight recharging
of lithium batteries).
There will be a technical review done and then a trial period. If all goes
well, an addition to the MTAR is possible.
>From what I understand, it was looking at the tech itself - the
onboard circuitry. There was also a bit of grandfathering since they'd
been used unofficially for a while with no incidents. I see Sean has
popped up here so the GFA airworthiness group would be aware of it,
probably just a case of s
For a rare occasion I agree with Mike.
What were the evaluating criteria used to approve Fusion?
> On 1 Feb 2019, at 8:33 am, Mike Borgelt
> wrote:
>
> I'm sure that's nice for the Fusion dealer but these seem to be similarly
> specified but with higher allowable discharge current and simi
I'm sure that's nice for the Fusion dealer but
these seem to be similarly specified but with
higher allowable discharge current and similar internal protection circuitry.
The internal circuitry is designed to make the
battery "look" like a standard lead acid or gel
cell type and the EarthX br
Techbrands is the Jaycar wholesaler.
From: Aus-soaring On Behalf Of Nick
Gilbert
Sent: Friday, 1 February 2019 06:40
To: Discussion of issues relating to Soaring in Australia.
Subject: Re: [Aus-soaring] Lithium batteries
Same product (and same price) available at Jaycar - although
Only the Fusion brand are approved at the moment. See MTAR 1/2017 on the
GFA website at
http://www.doc.glidingaustralia.org/index.php?option=com_docman&view=download&alias=2295-mtar-lifepo4-batteries-2017-08-01&category_slug=mosp-part-3-airworthiness&Itemid=101
Paul Dickson
On Fri, Feb 1, 2019 at
Same product (and same price) available at Jaycar - although strictly
speaking only fusion brand allowed at this stage?
https://www.jaycar.com.au/12-8v-7-5ah-lithium-deep-cycle-battery/p/SB2201
Nick.
On Fri, Feb 1, 2019 at 6:16 AM Mike Borgelt
wrote:
> This came in yesterday:
>
>
> https://ww
This came in yesterday:
https://www.techbrands.com/store/category/li-battery-feb19.aspx?utm_source=battery&utm_medium=Email&utm_campaign=TBNewFeb19
These look good for avionics although you can't use them to start an engine.
Mike
Borgelt Instruments - design & manufacture of quality so
OzFlarm with fiberglass sunshade and aerial for sale $500
100% working with latest firmware installed
Outputs to XCSoar for on-screen flarm radar
Greg Wilson
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