LiPo Batteries in Gliders

What about Nickle Metal Hydrate Batteries? I believe these are much
safer. Has anyone sucessfully installed these in a glider?

Joe

Been using NIMH for 2 years in a N3DT with Xponder. Works great!

Bob

What about Li Ion batteries like these? Is the fire risk sinificantly
less than Li Polymer?

http://www.streckenflug.at//shop/pro...roducts_id=608

A bit pricey, and probably not approved in Europe, but might be a
thought when a transponder has to be carried.

John Galloway

While charging a LiPo model airplane battery with a top-of-the-line charger
at the proper rate it burst into flame. I had carelessly left it out of the
flame-proof charge bag and when I checked strange noises the room was filled
with acrid smoke and a Mt Vesuvius mass of sputtering pyrotchnics was
burning a hole in the work bench. Don't fly with you-do-it LiPos unless you
have an ejection seat!

Karl Striedieck


"johngalloway" wrote in message
...
What about Li Ion batteries like these? Is the fire risk sinificantly
less than Li Polymer?

http://www.streckenflug.at//shop/pro...roducts_id=608

A bit pricey, and probably not approved in Europe, but might be a
thought when a transponder has to be carried.

John Galloway

On Feb 25, 9:03*am, "Karl Striedieck" wrote:
While charging a LiPo model airplane battery with a top-of-the-line charger
at the proper rate it burst into flame. I had carelessly left it out of the
flame-proof charge bag and when I checked strange noises the room was filled
with acrid smoke and a Mt Vesuvius mass of sputtering pyrotchnics was
burning a hole in the work bench. Don't fly with you-do-it LiPos unless you
have an ejection seat!

Karl Striedieck

"johngalloway" wrote in message

...

What about Li Ion batteries like these? *Is the fire risk sinificantly
less than Li Polymer?

http://www.streckenflug.at//shop/pro...roducts_id=608

A bit pricey, and probably not approved in Europe, *but might be a
thought when a transponder has to be carried.

John Galloway

Karl, model gliding is DANGEROUS !
See ya, Dave

Years ago, a lab next to the one I worked in had experimental
batteries under development. All the high energy density ones utilize
very reactive elements, of which lithium is one. However, nothing
would beat the sodium-sulfur battery in its capacity to "go
Vesuvius". It was colloquially referred to as "the fire and brimstone
battery". The lab had a sulfurous smell that reminded one of the
entrance to nether regions.

I'm going to stick with lead-acid, thanks very much!

Mike

On Feb 25, 8:48*am, Mike the Strike wrote:
Years ago, a lab next to the one I worked in had experimental
batteries under development. *All the high energy density ones utilize
very reactive elements, of which lithium is one. *However, nothing
would beat the sodium-sulfur battery in its capacity to "go
Vesuvius". *It was colloquially referred to as "the fire and brimstone
battery". *The lab had a sulfurous smell that reminded one of the
entrance to nether regions.

I'm going to stick with lead-acid, thanks very much!

Mike

If you think lead-acid gel-cells are safe, try a dead short on a fully
charged one. Splattering hot gelled acid is pretty nasty stuff.

On Feb 25, 6:03*am, "Karl Striedieck" wrote:
While charging a LiPo model airplane battery with a top-of-the-line charger
at the proper rate it burst into flame. I had carelessly left it out of the
flame-proof charge bag and when I checked strange noises the room was filled
with acrid smoke and a Mt Vesuvius mass of sputtering pyrotchnics was
burning a hole in the work bench. Don't fly with you-do-it LiPos unless you
have an ejection seat!

Karl Striedieck

"johngalloway" wrote in message

...



What about Li Ion batteries like these? *Is the fire risk sinificantly
less than Li Polymer?

http://www.streckenflug.at//shop/pro...roducts_id=608

A bit pricey, and probably not approved in Europe, *but might be a
thought when a transponder has to be carried.

John Galloway

Here's an intersting video of a laptop battery fire.

http://www.youtube.com/watch?v=mlZggVrF9VI

Jim