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HomeRC & Power✈️Aircraft🚁HelicopterRadio - JR DMSS › JR 8103 backup battery replacement
01-21-2020 04:40 AM  13 months ago
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Badgerfarm

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Missouri

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JR 8103 backup battery replacement
Has anyone done the backup battery replacement on their JR 8103 radios? I have 2 that are converted to 2.4 using the modules but just can't make myself throw them away. They were decent radios in the day. I did a search and came up with zilch. Thanks
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01-21-2020 11:08 AM  13 months ago
dschertz

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Jackson, MI

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Take the case apart and there is a flat battery in there that you just replace. I forget the size. They are the same ones you would buy anywhere else. Should have the number on it.
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01-21-2020 01:29 PM  13 months ago
Badgerfarm

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Missouri

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Is it buried in the case or pretty obvious when the case back comes off? I wanted to avoid surprises. Thanks for the help.
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01-21-2020 02:22 PM  13 months ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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You need this lithium cell...

https://www.batterytex.com/product/...p-32-2-15-sanyo

There is no harm replacing this cell.

The cell is on the board with micro switches...

/
Saludos cordiales,
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01-21-2020 08:19 PM  13 months ago
dschertz

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Jackson, MI

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If I recall correctly it's in view. It's been so long I can't remember other than it wasn't much more than taking off the back and switching it.
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01-21-2020 08:35 PM  13 months ago
JuanRodriguez

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The Villages, Florida

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Rojoalfa url]https://www.batterytex.com/product/detail/sanyo/cr2032-p5-1/comp-32-2-15-sanyo
How is that installed ? I’ve not seen those pins on any transmitter batteries I’ve ever replaced ....
Been there, done that and old enough to know better.....
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01-21-2020 10:37 PM  13 months ago
Rojoalfa

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Well Juan... It is much easier you post a Pic of the cell you say that is the correct one.

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Saludos cordiales,
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01-22-2020 02:09 AM  13 months ago
JuanRodriguez

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Looks like you are correct ...... not an easy process.....

https://www.rcgroups.com/forums/sho...Anybody-done-it
Been there, done that and old enough to know better.....
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01-22-2020 10:19 AM  13 months ago
dschertz

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Jackson, MI

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Just took my radio apart to check and all of a sudden it loks like I never replaced it.My bad. It is as Juan put the picture up. I must be thinking of another radio I replaced. I know I slid on out and put it in, but wasn't this one. Now I'm confused.
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01-22-2020 04:26 PM  13 months ago
Rojoalfa

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Punta de Mata, Monagas-Venezuela

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That's it !!!

Image from rc groups...

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Saludos cordiales,
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03-19-2020 04:52 PM  11 months ago
UKhelinoob

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Michigan USA

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I have replaced mine with a home made one.. Because I couldn't find one with the correct leg spacing (The spacing were between the solder legs were too far a part). You see I was able to solder in a new battery but it was to high, so the switches on the front wouldn't work, So I made my own.. Now I can just unplug the battery and plug in a new one without removing the board and de-soldering.. But I did solder the wires from one plug to the battery holes on the board..

Screw the board back in and just plug the new backup battery in.. Easy as pie.. If fact all I did was solder the wires to the battery legs. put some small diameter heat-shrink onto the connections, and bend the solder tabs flat, and slide the battery inside a piece of heat-shrink (It was a tight fit) and just add heat to shrink it nice and tight..

Oh No, I was told (By a unnamed member) that I've modified the TX board, so now my JR 8103 is illegal to use now..

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03-19-2020 05:48 PM  11 months ago
Badgerfarm

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Missouri

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What battery number did you wind up using? Can you post or PM that to me? That's a great workaround. I'm not the greatest with electronics but I think I can handle that modification. Does the part number Sanyo CR2032-P5-1 work also?
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03-19-2020 06:40 PM  11 months ago
UKhelinoob

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Michigan USA

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This one or any other type like it.... Just bend the negative pin out..The positive pin in.. But remember to put heat-shrink on the pins that you soldered the wires to (To avoid a short).. To me a soldered in backup battery is a thing of the past.. (I've done this to my other 2 TX also)..

https://www.ebay.com/itm/Panasonic-...JIAAOSwDylahe21
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HomeRC & Power✈️Aircraft🚁HelicopterRadio - JR DMSS › JR 8103 backup battery replacement
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