Solar Panels / SP50-L
SP50-L 50 W Solar Panel
Powers Remote Systems
Allows siting far from ac sources
weather applications water applications energy applications gas flux and turbulence applications infrastructure applications soil applications


The SP50-L is a 50 W solar panel used in systems with large power requirements, but not as great as that provided by the 90 W SP90-L. Its cable length is user-specified and attaches to and recharges 12 V flooded batteries. It is ideal for use with Campbell Scientific's CS110 Electric Field Sensor as part of a lightning-warning system. It allows unattended operation of systems in remote locations, far from ac electrical sources.

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SP50-L with the 31107 Extended Mounting Kit

Detailed Description

The SP50 includes the 31107 Extended Mounting Kit for attaching the solar panel to a Campbell Scientific tripod or tower. The 31107 positions the solar panel approximately 25 cm (10 in.) from the tripod or tower, which reduces shadows from other components and guy wires. The zenith angle indicator and the slotted supports simplify installation. The 31107 began shipping with the solar panel in October 2014. This kit may be purchased separately to retrofit existing solar panels.


One SP50 can be connected to the SOLAR charge input of the CH150, CH200 or 18529 SunSaver regulator to provide a peak charge of 50 W. Two SP50 solar panels can be wired in parallel to the charge inputs of the SunSaver 18529 regulator to provide a peak charge of 100 W.

Note: Regulators must be housed in an environmental enclosure.

CH150/CH200 Charge Controller

The CH150 and CH200 limit charging current to approximately 3.6 A and can precisely charge these battery families: EnerSys Genesis NP Series (BP12, BP24), EnerSys Cyclone Series, Concorde Sun Xtender Series (BP84, PS84), or a custom battery.

18529 MorningStar SunSaver

The 18529 Morning Star SunSaver limits charging current to approximately 10 A and can charge flooded batteries or sealed rechargable batteries such as our BP12, BP2, BP24, and BP84.


-NOTE- Solar panel characteristics assume 1 kW m-2 illumination and 25°C solar panel temperature. Individual panels may vary up to 10%. The output panel voltage increases as the panel temperature decreases.
Cable Description 16 AWG, 1-twisted pair
Maximum Peak Power 50 W (100 W peak power when two SP50s are connected to one 18529 regulator)
Current at Peak 2.9 A
Voltage at Peak 17.5 V
Maximum Allowable Wind Gust Speed
  • Note: Assumes the 31107 Extended Mounting Kit is used to mount the SP50 to an adequately anchored tripod or tower.
  • 58 m s-1 (130 mph)
On-board Regulator Included No
Dimensions 83.9 x 53.7 x 5 cm (33 x 21.1 x 2.0 in.)
Weight 6 kg (13 lb)


Note: The following shows notable compatibility information. It is not a comprehensive list of all compatible or incompatible products.

Power Supplies

Product Compatible Note

Additional Compatibility Information


The SP50-L is compatible with the CH200, CH201, or 18529 Morning Star SunSaver.


The SP50-L is compatible with EnerSys Genesis NP series (such as PS200, BP12, BP24), EnerSys Cyclone series, Concorde Sun Xtender series (such as BP84), or flooded batteries when used with the 18529 Morning Star SunSaver.


  • The 18529 MorningStar SunSaver draws a continuous 8 mA current drain.

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