Outdoor Lantern Solar Solution needed

[The Pool Man]

Greetings,

I've been all over Amazon and AliExpress looking for a type of product that boils down to an LED bulb connected to a solar panel. Almost all options are a dim bulb with a tiny solar panel.

I don't understand is why someone doesn't offer way brighter bulbs with a way bigger solar panel. (Is it a battery storage issue?)

So I visit here under the presumption I may need to hire an electrician to 'make' the product I'm seeking. That is: I take a lantern and bulb combo I already use and juice it (somehow) with a larger solar panel.

I'm going to include links to my bulb and lantern. I must stick with these because I'm in a condo complex using only this fixture. (What I'm doing is adding a lantern where no electricity ever was set up.)

This is not spam. It's just so that anyone who has spec questions can simply go to the links.

The lantern --

https://www.homedepot.com/p/Acclaim-...W-FR/204204459

This Dusk Till Dawner bulb (7 Watts) -- (edited, explained way below)

https://www.amazon.com/Sensor-Lights-Lighting-Automatic-Outdoor/dp/B07KFML3CH/ref=pd_sim_60_3?_encoding=UTF8&pd_rd_i=B076CN463G& pd_rd_r=708b4f24-1065-11e9-a4fb-b1d8f98b2ea8&pd_rd_w=WnFrk&pd_rd_wg=jXLfp&pf_rd_p= 18bb0b78-4200-49b9-ac91-f141d61a1780&pf_rd_r=XP9K00YH4MRRENJKQ6X2&refRID=X P9K00YH4MRRENJKQ6X2&th=1

So I'm looking for a way to set up a large enough solar panel/battery/convertor situation to power this.

In this picture I show where I'd like to run the exposed wiring.

https://photos.app.goo.gl/MJ378Vd5SPSvj2Sx7

The panel would run to a California rooftop typically bathed in light.

So is this possible? And reasonably affordable?

Any help would be greatly appreciated.

[NeilBlanchard]

I would think the battery and charger are the hardest part?

Are you going with an all DC set up?

[The Pool Man]

Originally Posted by NeilBlanchard

I would think the battery and charger are the hardest part?

Are you going with an all DC set up?

If you're asking would I use the wires that come out of the lantern, yes. Since I'm (frankly) unaware of alternatives. Frankly = clueless on electricity.

My concern about a battery is that in summer it can get HOT where I am. I can come up with schemes of where to hide it but my concern is if a battery can simply spend weeks at a time over 100 degrees Fahrenheit.

When you say 'charger' do you mean a mechanism that instructs the solar to be saved to the panel? Or from the panel to the lantern/bulb? Or both?

Thanks for your response.

(By the by, I'm originally from Brockton.)

[NeilBlanchard]

Hi,

The solar panel produces DC - direct current - electricity. The battery also is DC. The bulb could be DC, but many are AC - alternating current; which is what your house is. The battery charger regulates how much power goes into the battery. The wiring for DC is quite different than AC - it has to be larger gauge to reduce losses, the longer the wires are.

It looks like the bulbs you have chosen are AC. So, you need an inverter to get AC from the DC battery.

[The Pool Man]

Originally Posted by NeilBlanchard

Hi,

The solar panel produces DC - direct current - electricity. The battery also is DC. The bulb could be DC, but many are AC - alternating current; which is what your house is. The battery charger regulates how much power goes into the battery. The wiring for DC is quite different than AC - it has to be larger gauge to reduce losses, the longer the wires are.

It looks like the bulbs you have chosen are AC. So, you need an inverter to get AC from the DC battery.

Thanks for the Solar Schooling.

Is this project do-able?

[NeilBlanchard]

Typical solar panels are 200-300 watts. The light you linked to is 5W, and depending on where you are, and how much sun you get on average - it should be very doable. But, it may or may not be "worth" doing.

It depends on the cost - if you can find a small (say 20-100 watt panel), for under $50, and a workable battery system for about the same - then would that be worth it to you?

A 5 watt bulb is a very small load. With a motion detector built into the bulb, it may only operate a few minutes a day - or maybe it won't run at all?

The expensive parts are the solar panel, the battery, it's charger, and the inverter - and the labor to install it all.

[The Pool Man]

Originally Posted by NeilBlanchard

The expensive parts are the solar panel, the battery, it's charger, and the inverter - and the labor to install it all.

The good news is that the labor will be cheap. Under $200 for the rest would be acceptable. I've got California sun and no trees in the way and rarely clouds.

But that light isn't a motion detector -- it's meant to come on each night for as long as the battery can handle it. Minimum six hours.

[The Pool Man]

Originally Posted by NeilBlanchard

Typical solar panels are 200-300 watts. The light you linked to is 5W... with a motion detector built into the bulb... The expensive parts are the solar panel, the battery, it's charger, and the inverter - and the labor to install it all.

Hi Neil,

So I goofed you guys up with my bulb link. (Amazon had changed the product at that link and I hadn't noticed.) I altered the link to a 7 Watt Dusk till Dawner which keeps most of your science math similar.

So I'm getting ready to shop for parts but must ask re-ask a basic question -- do the battery, charger, and inverter require a cool space? Or are they designed to sit in hot California sun? If not --

-- would an enclosure help if it was sitting in that same sun? That is: am I water protecting the battery and charger and inverter or thermal protecting them too?

Here is the actual location and scenario I'm contemplating.

https://photos.app.goo.gl/tqTKWRXrDgYZq9N46

So that lantern would have a 7 watt dusk till dawn with almost the same lumens of the real lights throughout our complex. The red lines indicating wiring, which would likely be inside of think pipes. The battery/charger/inverter would be 'boxed' in plain site.

If this sounds about right is there a kit you recommend? I've been looking and it's kind of shocking that batteries for this purpose do not exist with inverters and chargers attached.

[jjackstone]

Other pertinent questions. Is it being used for security? How many hours per night does it need to be on(battery size)? How much space do you have for a solar panel before the condo people get upset?

JJ

[The Pool Man]

Originally Posted by jjackstone

Other pertinent questions. Is it being used for security? How many hours per night does it need to be on(battery size)? How much space do you have for a solar panel before the condo people get upset?

JJ

Great questions.

The security aspect is to augment existing lighting which is nearby. And so if there's a few days of the year the light doesn't really come on, that's okay.

I'd like the bulb to work all night but a definite minimum of 6 hours. This is a rooftop and so a panel size restriction in unnecessary. I don't know if a panel that's like 4 by 2 feet (or whatever) will cover this.

Is there a panel kit on Amazon that fits this bill?