MidNite Solar The KID MPPT Solar Charge Controller for Lead-Acid and Lithium Batteries, DC Load Controller with Automatic Genstart


SKU: MNKID-B

$357.25

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Product Summary

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Frequently Asked Questions

The KID tops out at 30A of charge current, which works out to roughly 420W of panels on a 12V bank, 840W on 24V, and 1,680W on 48V. A modestly larger array is fine, since The KID simply caps its output at 30A in strong sun, as long as the array's cold-weather Voc stays under 150V. Our support team is happy to help with sizing, so contact us with your panel specs.

MidNite's HyperVOC design lets The KID take up to 162V on the PV input without damage. Between 150V and 162V it won't charge, though; it waits in standby until the array voltage drops to 150V or lower. Run your panels through our cold-weather Voc calculator and lay out your strings so the coldest-day Voc stays under 150V, and you won't lose charging time on clear winter mornings.

Select the Lithium battery type in the charging menu, or choose Custom and enter the absorb and float voltages from your battery manufacturer's spec sheet, with equalization turned off. The KID handles 12V, 24V, 36V, and 48V nominal banks.

No. The KID's PV, battery, and load negatives must stay isolated from each other, with each one landing on its own terminal on the controller. Load positive is shared with battery positive internally and loads are switched on the negative side, so run each load's negative to The KID's load negative terminal rather than to a common negative bus. Tying the negatives together outside the controller can cause inaccurate current readings and damage.

Plan on a breaker or disconnect on the PV input and another between The KID and the battery. MidNite's MNEPV 150V DIN-rail breakers and MNEDC panel-mount breakers are the usual match, and a Baby Box enclosure keeps the DIN breakers tidy right next to the controller. Ratings depend on your array's short-circuit current and wire gauge, and our support team is happy to help you pick them, so contact us with your system details.

Not this standard version. The MidNite MNBTS sensor is sold separately and comes standard only on the marine KID. With a BTS installed, The KID automatically adjusts charge voltage to battery temperature, which matters most for lead-acid banks in unheated spaces.

The KID is fanless and operates from -40°F to 122°F (-40°C to 50°C), but it automatically scales back output above 77°F (25°C). Mount it indoors, out of direct sun and away from engine or furnace heat, with open air around it so it stays cool and holds more of its 30A in summer.

MidNite Solar backs The KID with a 5-year manufacturer warranty.

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