Computer radio Lithium back up battery

Thread view:

Enable EMail Alerts

Start New Thread

Thread rating:

Tom Minger - 09 Oct 2003 03:55 GMT

Has anyone found a web site that sells these tiny things. Need one for a old
JR 347 radio.

Reply to this Message

CainHD - 09 Oct 2003 05:14 GMT

>Has anyone found a web site that sells these tiny things. Need one for a old
>JR 347 radio.

JR / Horizon will service your radio and repalce that batt for just a few
bucks.

I had a job done last winter on my 8103 and that was added, Shipping and all
was only about $30. Beats losing an airplane.

Reply to this Message

Doug McLaren - 09 Oct 2003 18:36 GMT

| >Has anyone found a web site that sells these tiny things. Need one for a old
| >JR 347 radio.
|
| JR / Horizon will service your radio and repalce that batt for just a few
| bucks.

Radio Shack or Fry's (if you have one) may have something usable as
well. Of course, you'd have to find and remove the battery yourself,
then find a sutiable replacement, then put it in.

If it fits in a holder, you'll need something with the same size,
shape and voltage.

If it's something that's soldered in, you may not need something with
exactly the same size and shape, but you will need the correct voltage
(of course.)

| I had a job done last winter on my 8103 and that was added, Shipping and all
| was only about $30.

(Of course, if you don't feel comfortable with opening your radio and
doing any soldering that might be needed, it's best to pay somebody
else to do it. But $30 seems expensive ... but most of that was
probably shipping.)

| Beats losing an airplane.

To be fair, a failed backup battery should not cause a plane crash.
What it would do is cause your radio to lose it's programming, which
you should notice (if the programming is required) in your pre-flight.
If you do crash, it's due to an improper pre-flight check.

(Losing the backup battery in the middle of a flight is extremely
unlikely, but if it did happen, your radio wouldn't even notice until
you turned it off, not something you usually do in mid-flight.)

(Of course, you should still get it fixed.)

Signature

Doug McLaren, dougmc@frenzy.com
If quitters never win, and winners never quit, then who is the fool
who said `Quit while you're ahead'?

Reply to this Message

John Morley - 09 Oct 2003 14:55 GMT

Companies like Digi-Key (www.digikey.com) sell lithium replacement
batteries. Look at the old battery to get the dimensions, and the
voltage and order one that matches. Should be a simple replacement!

John

> Has anyone found a web site that sells these tiny things. Need one for a old
> JR 347 radio.

Reply to this Message

Pete - 09 Oct 2003 21:03 GMT

My JR 642 is using a Panasonic CR2032 PCB-mounted lithium battery. Use a
FINE TIPPED soldering iron and don't apply the heat for too long. Also,
examine the battery before you remove it because it is polarised - there is
a right and wrong way to fit it, meaning it matters the way it goes in. In
my 642 the top soldering tab (positive) is facing the carrying handle.

Good luck.

Reply to this Message

John R. Agnew - 09 Oct 2003 22:29 GMT

> Companies like Digi-Key (www.digikey.com) sell lithium replacement
> batteries. Look at the old battery to get the dimensions, and the
[quoted text clipped - 4 lines]
> > Has anyone found a web site that sells these tiny things. Need one for a old
> > JR 347 radio.

There was a model magazine article about two years ago, explaining how
to replace the battery in the 8103 yourself, and it convinced me not
to try it. It's not just a drop-in procedure.

Reply to this Message

Flierbk - 10 Oct 2003 15:05 GMT

You can buy it from Horizon, it is soldered in, on some JR radios it is not
the easiest thing to get at as you have remove circuit board and take the
transmitter partially apart, if I remember they charge about 6 to 8 dollars
for it and I believe they weld special tabs on the battery at least they do
for the 8103. On the 10SX and 10X radios it is a job to get down to to
battery and it is easy to damage a foil getting the old one out, unless you
are an experienced electronic guy it may be worth it to send it in.

I just did my 8103's and 10X and 10SX it took some doing, also back up your
programs with the JR DataSafe program if you have it.

Bill Krueger

l

> Has anyone found a web site that sells these tiny things. Need one for a old
> JR 347 radio.

Reply to this Message

Model Forum / Radio Controlled / Air Models / October 2003

Computer radio Lithium back up battery