On 2/27/20 10:37 AM, Dave Walsh wrote:
At 17:17 27 February 2020, wrote:
On Thursday, February 27, 2020 at 12:43:21 AM UTC-5, 2G
wrote:
On Wednesday, February 26, 2020 at 1:13:46 PM UTC-8,
Shaun Wheeler wrote:
L33 solo.

This may be of interest:

http://jdasolutions.aero/blog/faas-p...m-ion-battery-
approval-standards/


https://www.aviationpros.com/engines...ents/aircraft-
airframe-accessories/batteries/article/12256058/lithiumion-
batteries-in-aircraft

This is a TSO'd 12V battery:
https://earthxbatteries.com/product-...ified-aircraft

To get approved it looks like any lithium ion battery will need a
hardened case with venting to the outside of the A/C.

Tom

"at an incredible introductory price of $699"

This is for a starter type/size battery (it says "840 Peak cranking
amp").

Curiously that web page does not say what the chemistry is,
other than
"lithium", but the PDF brochure says "Custom made prismatic
LiFePo4 cells".

I wonder: the (large, installed) lithium batteries that caught fire
on some
airliners, what chemistry were they?

The DreamLiner batteries were LiPo (Lithium Polymer) I think. I
understand they are now in an externally vented metal box? Any
Boeing pilots like to confirm?


Not a Boeing pilot, but they are lithium cobalt, like is used in most
electric motorgliders. Yes the 787 now uses steel boxes vented to the
outside.

But LiFePO4 have also been known to burn. EarthX says to vent them to
the outside, but don't believe they recommend fire-proof boxes.

Dave