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20A Dual Battery Charge Controller (STCC20)

£55.00 inc VAT

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20A Dual Battery Charge Controller - STCC20

This controller is designed to work on both 12v or 24v off-grid solar systems and has the additional functionality that it can charge two batteries simultaneously.

The charging process has been optimized for long battery life and improved system performance. The comprehensive self-diagnostics and electronic protection functions can prevent damage from installation mistakes or system faults.

Features & Benefits

  • Reverse current protection.
  • Unique dual battery charging function.
  • Efficient Series PWM charging, increases battery lifetime and improves solar system performance.
  • 12/24V automatic recognition.
  • Overload protection.
  • Open circuit protection.
  • Lightning surge protection.
  • Deep discharge protection.
  • Charge current protection up to 20A.

All solar panels (except the 5W &10W) require a voltage regulator to ensure that the battery is not overcharged. We recommend the STCC20 20A Charge Controller for solar systems with a total wattage of 100 to 300W.


Nominal System Voltage: 12/24VDC (automatic system voltage recognition)
Battery Voltage Range: 6-36V
Rated Battery Current: 20A
Charge Circuit Voltage Drop: ≤0.26V
Self-consumption: ≤6mA
Temperature Compensation Coefficient: -30mV/oC/12V(25o ref)
Over Voltage Disconnect Voltage: 16V/32V
Charging Limit Voltage: 15.5V/31V
Equalize Charging Voltage: 14.6V/29.2V
Float Charging Voltage: 13.8/27.2V
Operating temperature: -35oC to +55oC
Overall dimensions: 135 x 70 x 35mm
Mounting hole size (in case): 3.8mm
Terminals: 6mm2
Net weight: 155g

Delivery Charges

• Free Delivery 2-3 day service.
• Next Day Delivery - £4.95. Order placed before 2pm for next day service.
• Saturday Delivery - £14.95 Order placed before 2pm for Saturday delivery.
• Next Day orders placed after 2pm will be shipped the following day on a next day service.
• Next Day orders placed on a Friday before 2pm will be delivered on the following Monday.

Delivery costs outside of the UK are quoted in your shopping cart and differs depending on the delivery address.

Delivery Information

All goods are sold subject to availability. Your shopping basket displays the goods you have purchased and an indication of the delivery timescale. We will notify you if your goods are not able to be despatched within this timescale. Where goods are temporarily out of stock we will contact you so that you may choose between a refund on the item, having it shipped when it is back in stock or selecting an alternative product.

The delivery costs are shown depending on the shipping destination and the delivery service selected. Any delivery times quoted are estimates, based on availability and normal delivery time, in working days. Additional time should be allowed where payment is made by cheque, as we will not despatch goods until the cheque has cleared.