Forum Discussion

TimLoon's avatar
TimLoon
Explorer
Jun 13, 2013

New to Solar, Some Questons?

Added a 100 watt panel to my MH with a 10 amp controller. Daily checks with meter show charging under varying conditions of 18 to 19 volts. This :Kit" came with minimal instructions so need some help from the experienced.
On the controller, there is a LED for "overcharge" that is often blinking. What does that usually mean? There also are +/- terminals on the controller with a light bulb symbol. What should be hooked to this and what does it do for me? Thanks for your advice. Tim
  • I would change it to GEL setting to avoid the Overcharge/Equalization.
    Charging at 14.2 will be fine. Float at 13.8 is same either way.
    Even Sealed would be better IMO with boost and equalize dropped by 0.2v to 14.6 & 14.4 respectively.
  • That is a LandStar Ls1024 controller, based on the picture. Same one I have and the little brother to BFLs.

    Manual

    Jim
  • The lite bulb symbol is where you would connect a load,.....if you were loading it direct, instead of going thru the battery.
    And the overload lite blinking probably means the batteries are full charged and going into float mode
  • the light bulb +- connections are for hooking up a load to run from the battery, such as security light,
    during the day the controller would charge the battery,
    at night it would turn on the light until the battery hit the low voltage point, then turn off the light

    18>19 volts into controller is good
    use a meter to measure the 'output' to the battery 'actual charg voltage'
  • Here's the link:
    http://www.ebay.com/itm/Complete-Kit-100W-100W-Watts-Solar-Panel-Charge-Controller-Z-Bracket-/271211938333?pt=LH_DefaultDomain_0&hash=item3f257dc21d
  • Bought through Ebay. Final price delivered was $174.00. Info from their current ad:
    Product Description:


    1) Renogy 100 Watt Monocrystalline Solar Panel

    2) 10amp Charge Controller


    3) 20' extension cable. 20' SOLAR Cable

    To be cut in the middle and connect the connectors with solar panels, screw the bare ends into the charge controller

    Note: The actual extension length is 10' as you will need to cut the cable in the middle to make two leads.

    4) Universal Z brackets to mount the solar panels on the flat surface. Z Brackets Mount




    Please contact us for delivery to Hawaii and Alaska. Thanks.



    Key Features
    •High Modules Conversion Efficiency
    •Guaranteed Positive Output Tolerance (0-3%)
    •Delivered ready for connection
    •Fast and inexpensive mounting
    •Withstand high wind (2400 Pa) and snow loads (5400 Pa)
    •Excellent performance in low light environments

    Solar Panel Electrical Specifications



    Optimum Operating Voltage (Vmp): 18.9 V

    Optimum Operating Current (Imp): 5.29 A
    Open - Circuit Voltage (Voc): 22.5 V
    Short- Circuit Current (Isc): 5.75 A
    Maximum Power at STC: 100 W
    Operating Module Temperature: -40°C to + 90°C



    Mechanical Specifications




    Solar Cell: Mono-crystalline 125 x 125 mm (5 inches)
    No. of cells: 36 (4 x 9)
    Dimensions: 47 x 21.3 x 1.4 in (1195 x 541 x 35 mm)
    Weight: 16.5 lbs (7.5 kg)
    Front Glass: 3.2 mm (.13 in) tempered glass
    Frame: Anodized aluminum alloy
    Junction Box: IP65 rated

    Output Cables: 4.0 mm2 (.006 in2), 600mm(23.6inches)

    Connector MC4
  • Hi Tim,

    Please post the make and model of the controller and of the panel. It would be good if you have a link as well.

About Technical Issues

Having RV issues? Connect with others who have been in your shoes.24,201 PostsLatest Activity: Feb 19, 2025