The IQ4 is designed for use with the DLS series converter/chargers.
The IQ4 Controller allows the DLS charger to operate as an automatic 3-stage "smart
charger". This gives the customer the benefit of Bulk, Absorption, and Float stage
charging, increasing the charging capacity of the DLS charger and decreasing charge times
and insuring proper and safe battery charging. In addition, The IQ4 insures proper battery
charging while minimizing over-charging. This "smarter" technology monitors the
battery at all times. If the DLS voltage remains in the long term float stage more than 7
days, the IQ4 will automatically deliver an equalization charge for a predetermined time,
then automatically return to the normal float stage.
Bulk Charge
The batteries are charged from the full rated output of the DLS charger. During
this stage, the batteries are recharged quickly to reduce charge times.
Absorption Charge
The batteries are then held in the absorption stage for a controlled period,
insuring a full and complete charge. During this stage, the battery cells are equalized to
14.2vdc for increased capacity.
Float Charge
During the float stage, the DLS charge voltage is reduced to 13.6vdc. This
minimizes gassing, while maintaining a full charge. If the battery voltage drops below
12.6vdc, the IQ4 will restart at the bulk charge stage and repeat this cycle.
Weekly Equalization
If the batteries have not received a "smart charge" during a 7 day
period, the IQ4 will switch the DLS charger into a pre-programmed, equalization stage to
top off the batteries. This ensures full batteries all of the time without over-charging!
Wiring Connections
In July 2002 Iota starting producing converter/chargers
with a phone type jack for the IQ-4 instead of the screw terminals. The
IQ-4 has a matching plug that fits this jack.

click thumbnail image
above to enlarge
This new IQ-4 will NOT work with old DLS
convertors that have screw terminals.
IF YOU HAVE AN OLD STYLE DLS CONVERTER WITH SCREW TERMINALS
AND NEED AN IQ CONTROLLER CONTACT THE IOTA FACTORY TECH SUPPORT AT
800-866-4682. THEY MAY STILL HAVE A LIMITED QUANTITY OF THE OLD STYLE UNITS AVAILABLE.