I have a 1980 device (HP2621a terminal) with a now discontinued battery which retained settings while off. I am wondering if there isn't ome sort of continuously recharging (when on) battery that could replace this?

Also, for fiber optic telephonebackup as, thanks to Murphy's Law, the
batteries are never functional when there is an actual power outage.



--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

On 2023-02-24, vjp2.at@at.BioStrategist.dot.dot.com wrote:

I have a 1980 device (HP2621a terminal) with a now discontinued
battery which retained settings while off. I am wondering if there
isn't ome sort of continuously recharging (when on) battery that could replace this?

I'd hazard it's not an impossible task to add that in place of the
original primary cell battery; space might be a concern though.

Also, for fiber optic telephonebackup as, thanks to Murphy's Law, the batteries are never functional when there is an actual power outage.

Test the UPS on the same cycle as you test your smoke detectors.
Replace batteries as needed.


-----BEGIN PGP SIGNATURE-----

iQIzBAEBCgAdFiEE3asj+xn6fYUcweBnbWVw5UznKGAFAmP4zyQACgkQbWVw5Uzn KGD21RAAjOHU1/3n9W+RBNzxNg9ftbHBAQxffHDaSERCVZUVr152HuPyWi1fhBNf ngTvaQsV4t4I8zlLUo2nz2ZGUGmWTjK1gCo3jN+s4UiXAwb85ipeRn7s/KNt6Qjk dSyKoDMGwzGrykbO/du3aXd4sly8tr9zhZP77RUqFm21tepoAerorqI+5pnoFkBi XJ+1lg4Z2m9LRgS+/O4zbqx640bdWo0yx6QMeCoJJdCbc8qtbYM67S2XVEAzi9qQ tQLi29AqW5mvTHxwMdg82dVUT/qMuHQde7Yn7v1/prcRAmNvrAWmhEIUWBkp42uK LaRZ7avixRip6OHnuP9U6E7VctCHZ9ADh7op/RkuwjxS4PTNmXxi3K+8Ok5Afz2D 64JGHYVjAQuhOhKqSpvDM05lllD9Ibcbwu8kEwAxXlMnPMP1HsRf70hYAzWzxZa5 V0FNiHfNho+I1V0bD650SMmL5zxx3cA8gb6OUX8VNYcEgg9MDYdwwZt+s+dy1pya 3GZ5OztVeGkHdirSaW+r4PR8ZEVGmS5E7hPmgmyc7xsJD8+g0Ce1kac3VTZQ3+Ph S1noOrwUEbd0BLXx7bu1yT/WabUcF4bjacE2HuCVLy4Zwn3XCuogtcb+YOE0J57e I67EINVbIVKnCLsRzhLwN6SakUTKKryQGXLdHyJIO7UMdHwzFF8=
=nzU9
-----END PGP SIGNATURE-----

--
|_|O|_|
|_|_|O| Github: https://github.com/dpurgert
|O|O|O| PGP: DDAB 23FB 19FA 7D85 1CC1 E067 6D65 70E5 4CE7 2860

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

Walmart actually sells 12v rechargeable batteries for Verizon Fios.
Can I both use and charge the battery? I've done such things, just trying it, and suspect it would.


--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA512

On 2023-02-28, vjp2.at@at.BioStrategist.dot.dot.com wrote:

Walmart actually sells 12v rechargeable batteries for Verizon Fios.
Can I both use and charge the battery? I've done such things, just
trying it, and suspect it would.

Usually no. That is, if the charge controller detects you've connected
the charger, the battery gets charged and the device is powered from the charger connection.


-----BEGIN PGP SIGNATURE-----

iQIzBAEBCgAdFiEE3asj+xn6fYUcweBnbWVw5UznKGAFAmP/KI4ACgkQbWVw5Uzn KGCOjA/+PQtxDXPlyHp0ZnGdJ41RRBWMttjTGZVU/O/KCD/KVvVgK/z1z7Lhqf/l QPaF0+qzE7MYB3y9V6Hb4UYxN5Gfrn+6lp842+Xgjg3famLpHFBeVlFw+j0qlz8x 2zsTL2CqBrzhU48fqyJ2ax5Sg+rztjWgDd2Oe/VkpTwbY04mkX5QsO1Dal5ZH6i3 R9GYCD6ChhzCAgOICIh0HcQoyydD+JQ7/YOt/it5HPRWzDFCd55fP3PYwNvsmZ74 gYTkZzmUu32R3YL11mt0KBCk+UQtIX7pFB2d0FMJIJtBxXY5r97UUWtPu2pBF5qM WNWEWOhueHuFGyjkTdnicnOwmfo/5BiVDUtUSiveM9ft+tFWbGSSFSW+OzhfKeXc RflNxW5L0uz2QSbZy/w2fC8CsY4WN/Y4YrmQeDKC+RuDHIPD8qKC08N+AXVuEgAU Fse3+ZEi0hIOtpvCffAGVoQvBYReS3Eh6UA5RhPeiVkK2iNq1GIJpYlAp07ZvHmR AgcdXc8Q6hNHFJgYG0/qH5Q8UxtB8Xz4ptufLBzVAy4NvUA2UvgePrAJ4Q4goXlA wS9+VOym0fD3x6faXL0XPG9v5fdZQMqWqMS6JugYq9NOKyeiRgZkosZSMR9rmCI0 RiBkgI9adZ8S9F6+VhxCXAb8SyfMVazEDzSLWX714dhgu5NpoXE=
=eiPn
-----END PGP SIGNATURE-----

--
|_|O|_|
|_|_|O| Github: https://github.com/dpurgert
|O|O|O| PGP: DDAB 23FB 19FA 7D85 1CC1 E067 6D65 70E5 4CE7 2860

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

It seems what I am really seeking is a simplified UPS??

--
Vasos Panagiotopoulos panix.com/~vjp2/vasos.htm
---{Nothing herein constitutes advice. Everything fully disclaimed.}---

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)

On Fri, 24 Feb 2023 14:08:02 -0000 (UTC),
vjp2.at@at.BioStrategist.dot.dot.com wrote:

I have a 1980 device (HP2621a terminal) with a now discontinued battery which >retained settings while off. I am wondering if there isn't ome sort of >continuously recharging (when on) battery that could replace this?

You would need to add a charging circuit to make that work. If you
just want to get it working:
1. Kindly disclose the discontinued battery voltage and part number.
2. Install a lithium (not Li-Ion) battery as used in some smoke
alarms. Select the number of cells in series to be slightly more than
the rated voltage of the discontinued battery. Button cells, such as
CR2032 will work, but will not last as long as larger cells.
3. Install whatever number of series silicon diodes are necessary to
reduce the battery voltage down to what makes the terminal happy.
About 0.6V per cell.
4. Find a place to mount the battery pack inside the terminal.

Also, for fiber optic telephonebackup as, thanks to Murphy's Law, the >batteries are never functional when there is an actual power outage.

--
Jeff Liebermann jeffl@cruzio.com
PO Box 272 http://www.LearnByDestroying.com
Ben Lomond CA 95005-0272
Skype: JeffLiebermann AE6KS 831-336-2558

--- SoupGate-Win32 v1.05
* Origin: fsxNet Usenet Gateway (21:1/5)