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IOTA IQ4 Smart Charge Controller


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Keep your Flooded Lead-Acid batteries fully charged and in peak condition.

SKU: 15853

IOTA IQ4 Smart Charge Controller

The IQ4 Smart Charge Controller extends the default voltage range of the Iota DLS battery chargers. It provides intelligent automatic charging control operating the DLS as as an automatic 4-stage "smart charger," delivering the charge your battery needs at the time it needs it. Simply plug the IQ4 cord into the dual voltage jack on the DLS Battery Charger.

IOTA IQ4 Smart Charge Controller Charging Stages

  • Bulk Stage
    Delivers maximum power charger can deliver, for fastest possible recharge time, up to about 14.8/29.6/59.2 volts (12, 24 or 48 volt battery banks). If this voltage is achieved, it will remain here for 15 minutes. If not, the DLS will deliver its maximum current for up to 3 hours 45 minutes at which point it will transition to Absorb.
  • Absorption Stage
    After the bulk stage, the IQ4 moves to the absorption stage at about 14.2/28.4/56.8V. This mode will continue for up to 8 hours to ensure that the battery receives a complete charge.
  • Float Stage
    During the float stage, the IQ4 reduces the DLS charge voltage further to 13.6/27.2/54.4 volts. This reduced voltage maintains the battery in full condition while minimizing off-gassing. This extends the life of batteries, avoiding bulging and plate degradation caused by being held at higher charging voltages for too long.
  • Equalization Stage
    If the batteries remain in float stage for a 7-day period, the IQ4 will switch the DLS charger into equalization stage. At this point, the DLS brings the battery up to the Bulk voltage for a short time. This helps to dissolve the sulfate layer on the battery's plates. The strong bubbling that occurs at this elevated voltage tends to mix the electrolyte, so stratification doesn't compromise battery performance. Be sure your battery compartment is vented to the outside, so the corrosive fumes don't cause health or equipment damage!

IOTA IQ4 Smart Charge Controller Features

  • 4-stage charge profile for longest battery life and best capacity utilization
  • Helps minimize boiling, off-gassing and water loss
  • Installs easily by plugging into the dual voltage jack of the DLS charger
  • Flashing LED to indicate current charging stage
  • 2-year warranty

IOTA IQ4 Smart Charge Controller Specs

  • 2.6" L x 1.3" W x 0.7" H
  • Cord length: 10"

This product is shipped from one of our warehouses in Northern California. Orders placed after 12 p.m. will typically ship the following business day. Click here to see an estimate of our delivery times with standard FedEx Ground shipping.

Returns & Replacements
Regularly stocked, non-special-ordered, and non-custom-built items can be returned for a refund within 30 days of receipt if unused and in original packaging. Returns of solar panels, inverters or other large ticket items will incur a re-stocking fee of up to 30%. Freight shipping is non-refundable.

For more, please read our full return policy.

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