Lamar Technologies BETA D-50 - Manual (Page 19)

4. DETAILED OPERATING INSTRUCTIONS
2. IF TEST FAILED
The Fail lamp illuminates if the discharge has been
discontinued because the cutoff voltage has been
reached before the completion of the set discharge
time. The red LED goes out, but the time is frozen at
the elapsed time at which the test failed. The battery is
in need of reconditioning or must be rejected for
aircraft service. Refer to the battery manufacturer's
maintenance manual on how to proceed.
4.7.1 LEAD-ACID BATTERY
If the lead-acid battery has been accepted by the Beta D-50 discharge test it has
successfully completed the capacity test.
4.7.2 NICKEL-CADMIUM BATTERY
Check each cell with a digital voltmeter near the end of the test.
A. If no cells have dropped below 1.0 volts at the end of the specified time the battery
has successfully completed the capacity test.
B. If any cells have dropped below 1.0 volt before or at the end of the capacity test the
battery must be reconditioned (deep cycled). Please refer to the battery manufacturer's
maintenance manual on how to proceed.
K.
SWITCH AC POWER OFF.
Switch the AC on-off/reset switch off before
removing the battery
NOTE: If in emergency it is required to stop the test,
switch the unit to off/reset. When the test is restarted the
timer is reset to zero. It may be necessary to recharge the
battery before resuming the test.
BETA D-50 TESTER / ANALYZER - OPERATING MANUAL V2.2 Page 17