Technical Manual

Chapter 3 • Introduction
D C U M a i n t e n a n c e a n d O p e r a t i o n M a n u a l 17
This event is more likely to be seen when the battery is at a higher charge level (to
prevent life-reducing overcharge) and thus is more likely in the summer months
compared to the winter months.
We understand that some customers use the charging current data to determine if a
DCU’s charging capability has been impacted and this may provide false positive
alerts. Aclara recommends using a combination of the charging current and the
unloaded voltage to minimize any false positive alerts for no charging. If charge
current remains at 0A but unloaded voltage is above 13V within a 24-hour period,
this indicates a working charge circuit.