Unboxing an ELT Battery

[wanttaja]

I do carry an ELT in my Fly Bay, even though it's not required. Time to replace it. Out of curiosity, I cut open an old one to see what was inside:

Yep. Eight dead-stock Energizer 9V transistor radio batteries, packed in corrugated cardboard. TSO C-91 is what the label says.....

Note the expiration date for the batteries is December 2023. The ELT pack required replacement two years earlier. It's listed as having been manufactured in December 2018.

Ron Wanttaja

 

[murphey]

Mine’s a bunch of C or D batteries, don’t remember.

 

[Bell206]

Yep. Eight dead-stock Energizer 9V transistor radio batteries, packed in corrugated cardboard. TSO C-91 is what the label says.....

Until recent years, most aircraft battery packs are/were just that. Knew a number of people over the years who took advantage of that and simply replaced the batteries and heat shrink. Then the infamous Ameri-King ELT hit the market sans the heat shrink exposing the Durecells and it was all the rage. Too bad they didnt improve the build quality to match its popularity.

 

[Dana]

Mine was six D batteries, which served a second life in a Maglite

 

[asicer]

Eight dead-stock Energizer 9V transistor radio batteries,

Are they in series? Or parallel? What's the voltage at the connector? Attach it to a buck-boost converter and use it to power various electronics around the house during a blackout next storm season.

https://www.amazon.com/DROK-5-5-30V-Adjustable-Regulator-Converter/dp/B07VNDGFT6

Bonus points for 3D printing something around it.

A

Thread 'Repurposing Narco ELT10 Batteries (Merle BP-1010)'

Aug 22, 2022

OpenSCAD code at the bottom of this post.

// Filename: bp1010_lantern.scad
// Author: asicer
// Date: 2022-08-22
phgt=15.0; // plug height
plng=73.0; // plug length
pwdt=60.0; // plug width
nwdt=19.0; // notch width
ndpt= 2.5; // notch depth
lhgt= 2.0; // lid height
shol= 9.0; // screw hole offset from l edge (horiz)
shor=12.7; // screw hole offset from r edge (horiz)
shov= 7.5; // screw hole offset from plug top (vert)
shdi= 3.6; // screw hole diameter
shdp=10.0; // screw hole depth
skdi=18.0; // socket diameter
ohdg=60.0; // maximum overhang...

• asicer
• Replies: 9
• Forum: Flight Following

 

[Capt. Geoffrey Thorpe]

I like to save the ELT-10 battery packs on the floor of the back seat of my car for a couple years because they seem to be be "too good to throw away". But, yea, just a bunch of potted off the shelf D cells.

 

[Magman]

Some units used lithium batts years ago. An AD shut that down.

 

[DaleB]

Ours uses, I believe, two D-size lithium cells.