low battery voltage ad lock

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The AD lock  battery pack type can be changed following this procedure:1. Disconnect the existing battery pack2. Depress and hold the SCHLAGE button for a few seconds to drain off any residual...
Information on low battery threshold and nuisance delay is noted below: New firmware now has improved levels. - These are approximate values/levels which change with measurement meters and measure...
AD400/AD200/AD250 After ADFwPkg 2.17.0 - June 2011 4 Battery Holder New batteries = 6.2 VDC Low battery threshold is 4.7 VDC for SM & MT - and 3.7 VDC for MAG and PROX (USB stops working at 4...
    AD400/AD200/AD250 After ADFwPkg 2.17.0 - June 2011 8 Battery Holder New batteries = 12.4 VDC Low battery threshold is 7.2 VDC Critical battery threshold is 6.9 VDC Coin cell = new/...
CO2004 Battery Holder (ONLY) New batteries = 6.2 VDC Low battery threshold is 4.2 VDC Critical battery threshold is 3.9 VDC Coin cell = new/full is 3.0 VDC, low is 2.8 VDC
CO2504 Battery Holder (ONLY) New batteries = 6.2 VDC Low battery threshold is 4.2 VDC Critical battery threshold is 3.9 VDC Coin cell = new/full is 3.0 VDC, low is 2.8 VDC
  CO200 & CO250 Disable coin cell Nuisance delay and blink, With CO.A.7 and SUS 4.10.2 or newer for CO200 and CO250, you can use the SUS/HHD, under Lock Properties, Edit, to de-select, DISABLE, t...
Causes for AA battery drain in AD-Series LOCKS Possible Cause Fix/Corrective Action 1)      One the four (or eight) AA was inserted reversed and the rese...
Coin cell replacement is not immediately registered by the AD200/250 firmware.
Performing a processor reset (pressing and releasing S1 on the Main PCB Assembly) will register the new coin cell.
Cycling lock power (i.e., disconnecting and reconnecting the "AA" battery pack) will register the new coin cell.
The coin cell part number is CR2025 - 3 volt lithium - available at most battery or electronics stores.
All Keypad ONLY credentials with firmware versions between 2.9.2 and 2.11.0 should be updated to the latest firmware available at www.schlage,com/support.
A firmware issue with Keypad ONLY credential firmware, versions 2.9.2 through 2.11.0 and manufactured between 9-9-2010 and 1-5-2011 will exhibit poor battery life.
The Keypad ONLY credential Reader (KP) can prevent the reader from entering its low power sleep mode - with firmware versions 2.9.2 through 2.11.0
A Technical Note has been generated to document one method of measuring battery current. See the attachment HERE.