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Sorry if I am making hard work of this and thanks for your patience. I think I have now settled on parts which should work. I dont necessarily need 12V so instead I am looking at a 3.7V 4000mAh Li-ion battery. If the led uses 200mAh this should be sufficient for 4 hours a night. The controller says that it can take up to a maximum of 18V 40A solar panel so the 18V 10W one which I was looking at should be ok. Thanks again
Thank you for taking the time to reply. I have checked and the solar controller says its designed for the following types of battery More compatibility with a variety of storage batteries such as VRLA battery, gelled electrolyte (GEL) Battery, 3.2V x 2 iron-phosphate-based lithium batteries 3.2V x 4 iron-phosphate-based lithium batteries, 3.7V x 1 iron-phosphate-based lithium battery. Prevent storage battery being overcharged, over discharged and back discharged at night and it also has PWM flating- charged protection. Could I ask what type of battery you would recommend for this application? Also from what you have said I would be better finding an 18V 10W panel to give 500 mA.Having not bought the led yet, I will follow your advice and get the led and driver togetherThe plan was to have the light come on at dusk and run for no more than 4 hours each night. Again thanks for your time, its much appreciated
I will have a look, thanks for replying
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