When connected to the battery in accordance with the instructions, the Ah reading obtained is based on (a) battery voltage (b) battery temperature (c) battery resistance.If significant fluctuations occur, recheck connections both to meter and battery terminals. Repeat test twice to verify Ah reading obtained. Record Ah reading available in the battery.(If battery voltage is above 7.00 (6V) and 14.00 (12V), apply a load to reduce overcharge surface voltage from battery). Above 6.35 (6V) and 12.70 (12V) the maximum Ah capacity available in the battery will be obtained.
Record battery voltage reading obtained.Set calibration adjustment to ‘0’ (6 O’clock) for generic C20 rated standby SLA batteries, 9 O’clock for cyclic C10 rated GEL batteries and 3 O’clock car WET (Flooded) batteries.Connect battery tester to battery terminals making good tight connections in accordance with the operating instructions.Check that the ACT 612 test lead sockets are thoroughly clean using a suitable cotton bud dipped in PCB cleaning fluid.Verify battery voltage is above 6.35V min and 6.50V max for 6V batteries, and 12.70V min 13.00 max for 12V batteries using a calibrated Digital Volt Meter.Allow new-out-of-the-box batteries to acclimatize overnight to room temperature 20 – 25C 68 – 75F in order to verify stated Ah capacity.
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