Yes, I received that notice yesterday (Panasonic LC-R061R3P) https://www.digikey.com/product-detail/en/panasonic-bsg/LC-R061R3P/P128-ND/6671 Panasonic is discontinuing many of their “LC” rechargable (sealed lead-acid) batteries. Panasonic battery orders are accepted by Digi-Key until September 30. — Digi-Key has a recommended substitution from BB Battery (6V 1.3Ah), BP1-2-6-T1. https://www.digikey.com/product-detail/en/b-b-battery/BP1-2-6-T1/522-1000-ND/653321 — ESE used this 6 V SLA battery in many of its master clock designs. This battery form factor is used in a number of electronic appliances, so other battery manufacturers are available. A DIY alternative would use a 4-cell Cylindrical Battery Holder, such as those available from Keystone Electronics in New Hyde Park, NY (or Eastern Asia mfg.). The 6 Volt, 1.3Ah specification could be met with “C” cells wired in series. https://www.keyelco.com/category.cfm/Battery-Coin-Cell-Holders-Contacts-Clips/Cylindrical-Cell-Holders/p/404/id/1213 greg == From: Frederick Bray Sent: Tuesday, April 28, 2020 11:00 AM To: time-nuts@lists.febo.com Subject: [time-nuts] Battery for ESE 911 GPS Receiver/Clock For those of us with an ESE 911 GPS receiver / master clock, Digi-Key has announced the end of availability / end of life for the internal SLA backup battery.

For a DIY Solution, the battery cells need to be Rechargable. Battery chemistry and charging voltage/current present is a different discussion/decision. 4 battery cells would be wired in SERIES. Voltage = 4 times voltage of single cell (1.5V) = 4 x 1.5 V = 6 Volts Current = current (mA/hour or A/hour) of single cell. https://learn.adafruit.com/all-about-batteries/power-capacity-and-power-capability BATTERY UNIVERSITY Serial and Parallel Battery Configurations https://batteryuniversity.com/learn/article/serial_and_parallel_battery_configurations Since Rechargable Batteries have LESS mAh capacity than Alkaline or other throw-away batteries, Four (4) “AA” cells in series could be disappointing, while four (4)” C” cells in series would offer better capacity. gb Sent from iPad Air > On Apr 28, 2020, at 12:26 PM, Gregory Beat <w9gb@icloud.com> wrote: >  > Yes, I received that notice yesterday (Panasonic LC-R061R3P) > https://www.digikey.com/product-detail/en/panasonic-bsg/LC-R061R3P/P128-ND/6671 > > Panasonic is discontinuing many of their “LC” rechargable (sealed lead-acid) batteries. Panasonic battery orders are accepted by Digi-Key until September 30. > — > Digi-Key has a recommended substitution from BB Battery (6V 1.3Ah), BP1-2-6-T1. > https://www.digikey.com/product-detail/en/b-b-battery/BP1-2-6-T1/522-1000-ND/653321 > — > ESE used this 6 V SLA battery in many of its master clock designs. > This battery form factor is used in a number of electronic appliances, so other battery manufacturers are available. > > A DIY alternative would use a 4-cell Cylindrical Battery Holder, such as those available from Keystone Electronics in New Hyde Park, NY (or Eastern Asia mfg.). > The 6 Volt, 1.3Ah specification could be met with “C” cells wired in series. > https://www.keyelco.com/category.cfm/Battery-Coin-Cell-Holders-Contacts-Clips/Cylindrical-Cell-Holders/p/404/id/1213 > > greg > == > From: Frederick Bray > Sent: Tuesday, April 28, 2020 11:00 AM > To: time-nuts@lists.febo.com > Subject: [time-nuts] Battery for ESE 911 GPS Receiver/Clock > > For those of us with an ESE 911 GPS receiver / master clock, Digi-Key has announced the end of availability / end of life for the > internal SLA backup battery. >