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 & 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 CH150CH200 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- 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
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: The wind ratings are for solar panels with the indicated mounts and do not account for strength of tower or tripod.
  • 58 m s-1 (130 mph) Extended mount
Dimensions 83.9 x 53.7 x 5 cm (33 x 21.1 x 2.0 in.)
Weight 6 kg (13 lb)



The SP50-L is compatible with the CH200 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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