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  • #16
    20 meters

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    • #17
      Originally posted by Utdfederation View Post
      20 meters
      Curious if voltage drop is affecting the lights, being that they are running on 1.2 volts
      2.2kw Suntech mono, Classic 200, NEW Trace SW4024

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      • #18
        From what I can tell, each light is a small box with battery, solar panel, and LEDs. I think this is the product:
        https://www.woodsideproducts.co.uk/9...light-set.html

        The electronics in the light is a boost converter that attempts to apply constant current to the LED regardless of battery voltage, until the voltage is so low that it stops working.

        I'm very curious to hear if they work when placed in series.
        7kW Roof PV, APsystems QS1 micros, Nissan Leaf EV

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        • #19
          Ok.
          iv'e done what you said about putting 10 lights together.
          problem is ,as soon as i conect them to the 12v battery they all blow.
          so what im thinking is,we need to lower the current from 12v to 1.2v.
          hope you understand what i mean.
          ive tried to upload a pic of the problem but i keep getting error message

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          • #20
            Originally posted by Mike90250 View Post
            ..........
            ..........
            However. This all may not work, because wiring LED drivers in series, sometimes does not work. It all depends on how well the individual drivers and LED's are matched. If some consume more current, they will be starved because the driver needing the least current in the string, won't let more thru for the others. They may be dim, blink, or not even light.
            I'd not considered they would blow out. Bummer

            Powerfab top of pole PV mount (2) | Listeroid 6/1 w/st5 gen head | XW6048 inverter/chgr | Iota 48V/15A charger | Morningstar 60A MPPT | 48V, 800A NiFe Battery (in series)| 15, Evergreen 205w "12V" PV array on pole | Midnight ePanel | Grundfos 10 SO5-9 with 3 wire Franklin Electric motor (1/2hp 240V 1ph ) on a timer for 3 hr noontime run - Runs off PV ||
            || Midnight Classic 200 | 10, Evergreen 200w in a 160VOC array ||
            || VEC1093 12V Charger | Maha C401 aa/aaa Charger | SureSine | Sunsaver MPPT 15A

            solar: http://tinyurl.com/LMR-Solar
            gen: http://tinyurl.com/LMR-Lister

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            • #21
              Yeah a bummer indeed mike.
              nevermind i have loads of spares.
              just goto figure out how we can get current of 12v down to 1.2v

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              • #22
                Originally posted by Utdfederation View Post
                Yeah a bummer indeed mike.
                nevermind i have loads of spares.
                just goto figure out how we can get current of 12v down to 1.2v
                Just for clarification you mean to lower the Voltage from 12v to 1.2v not the current.

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                • #23
                  Here's a suggested new approach: Inside each garden light is an LED, some electronics, a solar panel and a battery holder.

                  light.jpg

                  The LED requires roughly 3V to operate. Disconnect the LED from the electronics, wire three LEDs in series with a small resistor to control current, and connect that to the 12V battery.

                  lights.jpg

                  If that works, then you can connect multiple sets of 3 lights and one resistor to the 12V battery.

                  ManyLights.jpg
                  7kW Roof PV, APsystems QS1 micros, Nissan Leaf EV

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                  • #24
                    Thanks bob i will give it a go tomorrow now buddy as i got to go work

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                    • #25
                      Just for clarification you mean to lower the Voltage from 12v to 1.2v not the current.
                      yes sir

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                      • #26
                        https://www.ebay.co.uk/itm/193457322848
                        thats what i bought.
                        what you think?
                        will that do the trick?
                        Last edited by Utdfederation; 12-11-2020, 11:15 AM.

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