Lamar Technologies D-1560 - Manual (Page 8)

OPERATING INSTRUCTIONS CONTINUED
9. User will evaluate the results of the test.
E.g. For a 30 amp-hour test:
a) 30 amps at 48 min- FAIL
b) 30 amps at 51 min (85% capacity) - PASS
c) 30 amps at 60 min (100% capacity) – SUPERIOR BATTERY
• The exact amp hr capacity of the battery is obtained as follows:
a) Convert the hours and minutes to all minutes
b) Divide by 60. Equals amp-hr capacity.
10. Record reading, set switch (#1) ‘Off’, remove battery.