Small Solar
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 4 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $66.99 Time Remaining: 3d 2h 6m Buy It Now for only: $66.99 |
 Poolguard Pool Alarm with in house remote receiver $56.00 (9 Bids) Time Remaining: 1h 53m |
 SOLAR SUN RING POOL SPA HEATER 21000 BTU COVER HEATING $17.80 Time Remaining: 3d 2h 6m Buy It Now for only: $17.80 |
 9 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $154.99 Time Remaining: 3d 2h 6m Buy It Now for only: $154.99 |
 Bird Feeder with Solar Lamp Bird Bath Base Planter Very nice $49.99 (1 Bid) Time Remaining: 7h 13m |
 NEW SOLAR SUN RING POOL HEATER THERMAL COVER 21000 BTU FOR POOL SPA HEATING $17.79 Time Remaining: 24d 3h 43m Buy It Now for only: $17.79 |
 2 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $32.99 Time Remaining: 3d 2h 5m Buy It Now for only: $32.99 |
 13 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $229.99 Time Remaining: 3d 2h 5m Buy It Now for only: $229.99 |
 FLOATRON Solar Powered Water Purifier $259.00 Time Remaining: 8h 14m |
 SOLAR SUN RING POOL HEATER THERMAL BLANKET COVER 10 pak $172.50 Time Remaining: 3d 2h 6m Buy It Now for only: $172.50 |
 Inground In line Automatic Pool Chlorinator Feeder $34.99 Time Remaining: 13d 4h 51m Buy It Now for only: $34.99 |
 Skooba Vac Vacuum Kit for Intex Inflatable Pools $44.99 Time Remaining: 9d 2h 44m Buy It Now for only: $44.99 |
 SOLAR LIGHTS10 INCREDIBLE PRICEGETEM QUICK WONTLAST $13.99 Time Remaining: 9h 14m |
 3 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $53.50 Time Remaining: 3d 2h 5m Buy It Now for only: $53.50 |
 7 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $126.99 Time Remaining: 3d 2h 6m Buy It Now for only: $126.99 |
 SOLAR PRO BYPASS KIT 4555 Game Group Pool Solar Heaters $56.99 Time Remaining: 27d 23h 14m Buy It Now for only: $56.99 |
 100 Color LED Solar Powered Outdoor Home Garden Path String Light Lamp Party $26.99 Time Remaining: 10h 10m |
 EcoSavr Swimming Pool Heat Liquid Solar Cover Fish Ecosaver 3 Pack $24.99 Time Remaining: 2d 2h 41m Buy It Now for only: $24.99 |
 18 Round Aboveground Swimming Pool Liner Cove Molding Peel Stick Kit 15 Pcs $49.35 Time Remaining: 20d 2h 3m Buy It Now for only: $49.35 |
 CALLA LILY WITH HUMINGBIRDS SOLAR BOUQUET STAKES GARDEN ACCENT LIGHTING $16.95 Time Remaining: 24d 6h 16m Buy It Now for only: $16.95 |
 Solar Powered Power Outdoor Garden 100 Blue Path LED String Light Lamp Party $26.99 Time Remaining: 10h 33m |
 16 x 32 Oval Aboveground Swimming Pool Liner Cove Peel Stick Kit 21 Pcs $73.29 Time Remaining: 20d 2h 3m Buy It Now for only: $73.29 |
 SUN RING SOLAR POOL HEATER THERMAL BLANKET COVER 5 pack $88.50 Time Remaining: 3d 2h 7m Buy It Now for only: $88.50 |
 27 28 Round Aboveground Swimming Pool Liner Cove Peel Stick Kit 22 Pcs $76.78 Time Remaining: 20d 2h 3m Buy It Now for only: $76.78 |
 LOT OF SOLAR ITEMS SOLAR LIGHTS TADD $22.50 (10 Bids) Time Remaining: 11h 11m |
 16 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $268.99 Time Remaining: 3d 2h 5m Buy It Now for only: $268.99 |
 HUNTER MINI CLIK RAIN SENSOR Click Weather Hardwired $19.60 Time Remaining: 3d 5h 13m Buy It Now for only: $19.60 |
 Solar Stainless Steel Modern Outdoor Path Wall Light $19.99 Time Remaining: 14d 21h 2m Buy It Now for only: $19.99 |
 SET OF 2 GudCraft Solar Powered 35 Foot Holiday String Lights 100 LED White $14.25 (3 Bids) Time Remaining: 11h 13m |
 24 Round Aboveground Swimming Pool Liner Cove Molding Peel Stick Kit 19 Pcs $62.51 Time Remaining: 20d 2h 3m Buy It Now for only: $62.51 |
 Rx Clear Swimming Pool Super Clarifier 1 Quart $13.98 Time Remaining: 9d 2h 35m Buy It Now for only: $13.98 |
 Zareba LIS3B Electric Fence Red SnapR Solar Powered 3 Mile Range Controller $66.00 (24 Bids) Time Remaining: 11h 13m |
 40 SMALL SHEPHERD HOOK GARDEN WEDDING SOLAR LIGHTS HANGER UNPAINTED 10PCS $31.00 Time Remaining: 21d 22h 42m Buy It Now for only: $31.00 |
 DIAMOND SPACE AGE SPA HOTTUB or SMALL POOL SOLAR COVER $19.53 Time Remaining: 22d 5h 35m Buy It Now for only: $19.53 |
 EcoSavr Solar Fish Biodegradable Liquid Swimming Pool Thermal Cover 3 Pack $26.00 Time Remaining: 11d 22h 4m Buy It Now for only: $26.00 |
 Fusion Products Ltd 16701 2 Count LED Solar Hanging Garden Lights $11.51 (4 Bids) Time Remaining: 11h 13m |
 4x20 Solar Pool Heater Panel Roof mountable MAX FLOW $164.50 Time Remaining: 14d 3h 28m Buy It Now for only: $164.50 |
 SOLAR BUG ZAPPER LIGHT GARDEN YARD LAWN OUTDOOR mosquitoes FLY INSECTS BUG MOTh $14.65 Time Remaining: 2d 55m Buy It Now for only: $14.65 |
 2x10 Swimming Pool Solar Heater Sungrabber Replacement Panel $58.95 Time Remaining: 15d 8h 39m Buy It Now for only: $58.95 |
 4pcs 3 LED Solar Powered Spotlight Landscape Spot Light LED Outdoor Garden Lamp $41.99 Time Remaining: 16h 15m |
 SOLAR SUN RING SWIMMING POOL HEATER COVER 15 pack $266.95 Time Remaining: 3d 2h 7m Buy It Now for only: $266.95 |
 Solar Garden Owl Bug And Mosquito Zapper $20.99 Time Remaining: 28d 7h 53m Buy It Now for only: $20.99 |
 2x20 Swimming Pool Solar Heater Replacement Panel $80.00 Time Remaining: 22d 1h 34m Buy It Now for only: $80.00 |
 5pcs Home Outdoor Garden Path Solar Powered Landscape Light LED Lamp $20.39 Time Remaining: 16h 23m |
 40 SMALL SHEPHERD HOOK GARDEN WEDDING LANTERN HANGER UNPAINTED $3.10 Time Remaining: 21d 22h 45m Buy It Now for only: $3.10 |
 4 S SOLAR COVER Pill Hot Tub Spa Liquid Pool Heater $39.99 Time Remaining: 21d 20h 29m Buy It Now for only: $39.99 |
 21 Round Aboveground Swimming Pool Liner Cove Molding Peel Stick Kit 17 Pcs $55.93 Time Remaining: 20d 2h 3m Buy It Now for only: $55.93 |
 18x30 Insulated Inground Swimming Pool Kit No 10 1 $8,775.00 Time Remaining: 17h 48m Buy It Now for only: $9,655.00 |
 Solar Powered Flag Pole Light Automatically Turns On at Dusk Turns Off at Dawn $17.89 Time Remaining: 28d 4h 27m Buy It Now for only: $17.89 |
 Solar Power Flying Color Butterfly Butterflies Garden Yard Decoration 3 PCS Set $9.95 Time Remaining: 3d 14h 19m Buy It Now for only: $9.95 |
 Hayward S180T Top Mount Swimming Pool Sand Filter $194.99 Time Remaining: 27d 18h 38m Buy It Now for only: $194.99 |
 2PK SOLAR POWER WIRELESS STAINLESS STEEL COLOR CHANGING LED YARD PATHWAY LIGHTS $17.99 Time Remaining: 23h 35m Buy It Now for only: $19.99 |
 Swimming Pool Diatomaceous Earth DE Powder Diatomite Filter Media 25 lbs $22.99 Time Remaining: 20d 22h 30m Buy It Now for only: $22.99 |
 14 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $237.99 Time Remaining: 3d 2h 5m Buy It Now for only: $237.99 |
 20LED Solar Powered String Light with Small Ball Shaped $34.29 Time Remaining: 6d 14h 7m Buy It Now for only: $34.29 |
 Strathwood Solar Garden Path Light Stainless Steel Set of 6 $5.50 (6 Bids) Time Remaining: 1d 9h 27m |
 Solar Illuminarie Gazing Ball Blue Small 6 Diameter $19.00 Time Remaining: 22d 2h 18m Buy It Now for only: $19.00 |
 Dirt Devil Pool Boy Above Ground Robotic Pool Cleaner $299.99 Time Remaining: 9d 2h 53m Buy It Now for only: $299.99 |
 Strathwood Solar Garden Path Light Stainless Steel Set of 6 $10.50 (6 Bids) Time Remaining: 1d 9h 27m |
 HQRP 2 Solar Powered Flying Fluttering Butterflies Yellow Red for Garden Plants $15.95 Time Remaining: 22d 20h 44m Buy It Now for only: $15.95 |
 Free Heat for Pool W Sungrabber Solar Panel + FREE KIT $166.90 Time Remaining: 20d 10h 15m Buy It Now for only: $166.90 |
 SOLAR SUN RING POOL HEATER THERMAL BLANKET COVER 6 pack $107.50 Time Remaining: 3d 2h 6m Buy It Now for only: $107.50 |
 Lot of 2 Bell + Howell 50104 Motion Activated Ultrasonic Solar Powered Repellers $1.10 (2 Bids) Time Remaining: 1d 9h 27m |
 12V 5Amp Dusk to Dawn Switch $12.85 Time Remaining: 4d 9h 23m Buy It Now for only: $12.85 |
 Woodstock Windchimes Tuned Wind CHAKRA CHIME SEVEN STONES Black Wood Stone Metal $21.50 Time Remaining: 23d 2h 57m Buy It Now for only: $21.50 |
 16 x 35 Solar Pool Heater Panel w Diverter Kit NEW $119.99 Time Remaining: 29d 23h 6m Buy It Now for only: $119.99 |
 Solar Group APK00000 4 x 4 Anchor Post Kit W Wooden Post Steel Drive In Anchor $0.99 Time Remaining: 1d 9h 27m |
 4x20 Solar Swimming Pool Heater Panel w Diverter valve $159.95 Time Remaining: 7d 32m Buy It Now for only: $159.95 |
 Woodstock Encore Collection Black Chimes of Mercury Windchime Wholesale CCI $13.59 Time Remaining: 28d 21h 57m Buy It Now for only: $13.59 |
 NEW SOLAR MOLE CHASER Vole Gopher Rodent Pest Repeller Controller Spike Stake $12.95 Time Remaining: 16d 4h 31m Buy It Now for only: $12.95 |
 Zareba Electric Fence LIS3B Red SnapR Solar Powered 3 Mile Range Controller $74.48 Time Remaining: 1d 10h 16m |
 TURBO TROPICAL FISH LIQUID POOL SOLAR BLANKET FOR SWIMMING POOLS 2 PACK $47.98 Time Remaining: 27d 3h 4m Buy It Now for only: $47.98 |
 SOLAR FLAG POLE LIGHT POWERED BY SUN DUSK TO DAWN NIB 60 DAYS RETURN POLICY $54.95 Time Remaining: 26d 4h 5m Buy It Now for only: $54.95 |
 SOLAR SUN RING POOL HEATER THERMAL BLANKET COVER 6 pack $107.50 Time Remaining: 3d 2h 6m Buy It Now for only: $107.50 |
 Solar Powered Floating Pond Oxygenator Oxgen Air Pump $31.67 Time Remaining: 1d 20h 52m |
 SUN RING SOLAR POOL HEATER THERMAL COVER BLANKET 8 pack $147.92 Time Remaining: 3d 2h 7m Buy It Now for only: $147.92 |
 Pool Skamper Ramp SKR4 Small Pets Dogs Cats Safety $44.99 Time Remaining: 9d 2h 35m Buy It Now for only: $44.99 |
 32 SMALL SHEPHERD HOOK GARDEN WEDDING SOLAR LIGHT HANGER UNPAINTED $3.10 Time Remaining: 25d 9h 34m Buy It Now for only: $3.10 |
 Solar Powered Decorative Stone Address Entrance Marker $12.92 Time Remaining: 1d 20h 52m |
 11 PACK NEW SOLAR SUN RING POOL HEATER THERMAL COVER $194.99 Time Remaining: 3d 2h 4m Buy It Now for only: $194.99 |
 Hayward Perflex EC40 Above Ground Pool DE Filter System $444.99 Time Remaining: 9d 2h 39m Buy It Now for only: $444.99 |
 Color Changing Floating Round Underwater LED Light Show Swimming Pool Spa Pond $2.99 Time Remaining: 3d 6h 17m Buy It Now for only: $2.99 |
 High Efficiency Low Current Brushless Water Pump Circulation Solar Submergible $40.00 Time Remaining: 1d 21h 55m Buy It Now for only: $50.00 |
 PoolGuard Inground Swimming Pool Alarm PBM PGRM 2 $185.00 Time Remaining: 18d 22h 39m Buy It Now for only: $185.00 |
 PBM Poolguard Inground Swimming Pool Alarm PGRM 2 $183.99 Time Remaining: 10d 2h 19m Buy It Now for only: $183.99 |
What should the voltage be on a small marine solar panel?
I have a small marine solar panel on my boat It came with the boat. I want to make sure it is working before I connect it. With a volt meter It is only reading .21 volts dc. I would think it should be 12-15 volts?
Mark, the 21 vdc is pretty typical. Most panels for home use are set up to charge 12 volt batteries, and they are wired for an, "open circuit voltage" of 18 to 19 volts. This allows it to have enough voltage to feed through a few diodes, perhaps a charge controller and 30 or 40 feet of wire and still have at least 15 volts left over. Once you connect it to the battery the panel will drop to whatever the batteries charging curve voltage would be.
If you have a few minutes, I would suggest getting a book at the library called, "The Complete Battery Book," by Richard Perez. Just read the chapters pertaining to lead acid batteries, the other discussions on lithium, ni cads and such won't apply to your boat system. If your panel is not large, and it's short circuit current rating in amps is less than 2% of the amp hour capacity of the battery, you can even run the panel without a charge controller. The book explains this as well. There is a great magazine that gets into the nuts and bolts of this stuff, it's called Home Power, you can find it online. You might also find some info at a couple renewable energy websites, I will list them below.
Panels are rated in two ways, open circuit voltage, which you measure with a multimeter while the panel is in open sun and nothing is connected to it. The other rating is short cirucuit current, which you measure with an ammeter while the panel is in the sun as well. You connect the ammeter across the output of the panel and let all the power short right through the meter, so you'll need an ammeter big enough to handle more amps than the panel puts out. A 10 amp unit will work for your boat panel. These tests won't hurt the panel, or the meters, we do it all the time in the field, and the manufacturers will tell you to do the same test if you have a problem with a panel and they want to know if it's malfunctioning. You can check one of their websites if you like.
Good luck Mark, and take care, Rudydoo
