New Air Max 2011 Sunforce 12V Solar Power Sports C

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Effective solar surface of 12" x 3"Weatherproof plastic case 14" x 4" x 0.5"Built-in overcharge protectionBuilt-in discharge protectionOvercharge & Discharge Protection
Under these conditions [link widoczny dla zalogowanych], at an ambient temperature of +3 °C, the panel was capable of delivering 1W of V @ 80.5 mA (no load)20.4 V @ 55 mA running a small electric motor (1.12 W)12.7 V @ 44.8 mA charging a small lead-acid battery (almost fully charged) (0.57 W)
The suction cups, supposedly intended to stick the panel to a fender or fairing, did not stay attached to either the solar panel or to anything else. They just can't support the weight of the panel. Give them away or use them for crafts.
According to the packaging, the Sunforce Power Sports Charger is an 80 mA trickle charger (battery maintainer) that works with small 12 V lead-acid batteries of the type used in
The Sunforce Solar Charger (also sold as Canadian Tire product11-189
Are these units any good? According to the specifications on the packaging and on the Sunforce web site, the Sunforce Solar Power Sports Charger will deliver "up to 1 Watt / 80 mAmp under ideal conditions". Ideal conditions include
The unit itself has a glass-covered solar panel in a sturdy black plastic case.
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An attached 8' (2.4 m) cableA set of battery clamps on 1' (0.3 m) of cableA set of O-ring connectors with an in-line fuse on 1' (0.3 m) of cableAn extension cable 8' (2.4 m) longA set of four rather useless little suction cupsTesting & Evaluation
Overcharge protection means that the panel contains a charge controller and will not continue to charge the battery past 100%. According to the Solar Navigator™ site, the float voltage (trickle voltage) for a 12 V lead-acid battery is recommended at volts. The Sunforce Power Sports Charger tested in the low end of this range (see below).
Conclusion
Outdoor operation (windows will reduce panel output)Clear [link widoczny dla zalogowanych], sunny skies with no overcastSolar panel wiped clean of fingerprints or filmPanel oriented perpendicular to the sun
MotorcyclesPersonal Water CraftAll-Terrain Vehicles (Quads)SnowmobilesTractors (lawn tractors)The Sunforce Power Sports Charger Solar Panel
Discharge protection means that the battery will not discharge through the solar panel under cloudy or dark conditions. Usually this is achieved by a simple series diode to block reverse current. Discharge current tested at virtually nil for the Solar Power Sports Charger, indicating effective discharge protection.
There seems to be some confusion in online ads about model numbers, specifications, and accessories, so check the product carefully before purchase. Do not confuse this with the Model 50012 1.8W auto battery maintainer, which comes with a cigarette plug.
Sunforce Solar Power Sports Charger Models and Accessories
The accessories for model 50014 (and for most descriptions of 50013) include
Model 50013 sells for between $29.95 USD (Amazon, others) to $38.24 USD (Sams Club)Model 50014 [link widoczny dla zalogowanych], sold at Canadian Tire for $29.99 CAD (and discounted as low as $7.99 CAD) appears to be an identical unit but may contain fewer or different accessories.Model 52015 is $42.78 CAD (Home Depot) for a set of two of the Model 50013 and related accessories