I am trying to save an old Icom IC-2ST handheld HAM transceiver.
There is a coin cell to back up the CMOS on the board. The coin cell is held with a retaining clip on top, and the other end of the retaining clip is soldered onto the board.
https://i.imgur.
/zWKZaHi.jpg
The problem is, the retaining clip seems to be welded onto the coin cell. Because of that, I can't see how best to remove it. If I remove the retaining clip at the PCB end, I doubt I'll be able to get it back on. It's extremely tight in that area, and no room for even the slightest error. Also, the angle of soldering would have to be perfect.
If I remove it at the battery end, how would I break the weld and then...how would I reattach it? Apparently it can be somewhat dangerous to solder weld metal onto a battery.
What do you all suggest?
There is a coin cell to back up the CMOS on the board. The coin cell is held with a retaining clip on top, and the other end of the retaining clip is soldered onto the board.
https://i.imgur.
The problem is, the retaining clip seems to be welded onto the coin cell. Because of that, I can't see how best to remove it. If I remove the retaining clip at the PCB end, I doubt I'll be able to get it back on. It's extremely tight in that area, and no room for even the slightest error. Also, the angle of soldering would have to be perfect.
If I remove it at the battery end, how would I break the weld and then...how would I reattach it? Apparently it can be somewhat dangerous to solder weld metal onto a battery.
What do you all suggest?
Last edited:
Get a CR2032 with pre attached tabs like so. I'm sure they're available from reputable suppliers too.I am trying to save an old Icom IC-2ST handheld HAM transceiver.
There is a coin cell to back up the CMOS on the board. The coin cell is held with a retaining clip on top, and the other end of the retaining clip is soldered onto the board.
https://i.imgur./zWKZaHi.jpg
The problem is, the retaining clip seems to be welded onto the coin cell. Because of that, I can't see how best to remove it. If I remove the retaining clip at the PCB end, I doubt I'll be able to get it back on. It's extremely tight in that area, and no room for even the slightest error. Also, the angle of soldering would have to be perfect.
If I remove it at the battery end, how would I break the weld and then...how would I reattach it. Apparently it can be somewhat dangerous to solder weld metal onto a battery.
What do you all suggest?
New 5pcs/lot CR2032 Tabs Solder Foot Soldering Welding Battery Coin Batteries 210mAh 3V Button 2032 Cell Battery Factory
AliExpress
Yeah I see it's a 2020 I'm sure you can find those, or a 2016 will fit. 2025 may also fit if there's a little wiggle room.
If the part number of the Panasonic battery is VL2020, Mouser lists it as rechargeable. If your radio has a charging circuit you cannot use the more ordinary non-rechargeable battery. Panasonic 20 mm 2 mm Coin Cell Battery | Mouser
My bad, CR20XX aren't rechargeable. You need a rechargeable to replace that cell
Also available from other suppliers (perhaps without the "shipping restricted" notice?)
https://uk.rs-online.com/web/p/products/6690514
Its an unusual lithium chemistry, most lithium rechargable are 3.7V, most primary cells are 3.0V.
Its clearly designed for memory backup.
https://uk.rs-online.com/web/p/products/6690514
Its an unusual lithium chemistry, most lithium rechargable are 3.7V, most primary cells are 3.0V.
Its clearly designed for memory backup.
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