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Morningstar SunSaver MPPT Charge Controller - 15A (SS-MPPT-15L)


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Morningstar's SunSaver™ MPPT solar controller with TrakStar Technology™ is an advanced MPPT battery charger for off-grid solar PV systems.

SKU: 48-0508

Morningstar SunSaver MPPT Charge Controller - 15A (SS-MPPT-15L)

The Morningstar SunSaver MPPT Charge Controller enables the use of larger, more economical 60-cell PV modules for 12V or 24V battery charging. With its 15-amp output, it can deliver about 200 Watts into 12-volt battery banks or 400 Watts into a 24-volt battery bank. There's no problem connecting a higher wattage panel - you won't get more than 15 amps, but you will get more energy into your battery. You can still be getting 15 amps even in marginal sun conditions.

Be aware that the input voltage is limited to 75V, which means that charging flooded 24V lead-acid batteries requires a "specialty" solar panel of between 72 and 96 cells. Two 60-cell modules in series is too high an input voltage, but one is not quite high enough voltage for typical recommended 'absorb' voltages. Sealed lead-acid is a different story - 60 cells is enough to meet most manufacturer's recommended voltages. This means that the SS-MPPT-15 most often finds utility in single-panel 12V systems.

The controller has electronic protection from short circuit, overcurrent, reverse polarity, high temperature, high voltage, lightning, and transient surges. An adjustable low battery voltage load disconnect protects the battery from over-discharge. LED indicators indicate charging, low battery, and faults.

The Load circuit helps streamline installation on simple systems. Only 1 overcurrent-protection-device (i.e. fuse) is needed between the controller and battery +, eliminating the need for a second fuse for loads.

The Morningstar SunSaver MPPT Charge Controller automatically detects 12V or 24V battery banks. Be sure your battery has a reasonable voltage before connecting so it self-programs to the proper battery voltage.

Morningstar SunSaver SS-MPPT-15L Charge Controller Features

  • Includes load control
  • Maximizes energy harvest with MPPT
  • Provides power boost
  • Fully adjustable and programmable
  • Up to four programmable timer sequences for pv lighting applications
  • Use with high-voltage PV modules, up to 96 cell
  • Extensive electronic protections
  • 5-year warranty


Morningstar SunSaver SS-MPPT-15L Charge Controller Specs

  • 6.6" H x 2.5" W x 2.9" D
  • 1.3 lbs
  • Peak efficiency: 97.5%
  • Nominal battery voltage: 12V or 24V
  • Peak input voltage: 75V
  • Maximum battery charging current: 15A
  • Battery voltage range: 7 - 36V
  • Maximum open circuit voltage: 75V
  • Wire: #6 AWG
  • Manufacturer: Morningstar
  • Model number: SS-MPPT-15L

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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