Off Grid RV- just need some LIGHTS!!!

[SolarRV]

Its for indoor lighting, and some outdoor lighting if possible. Maybe a small fan on the inside. I just need to figure out the math on this stuff.

[Sunking]

Its for indoor lighting, and some outdoor lighting if possible. Maybe a small fan on the inside. I just need to figure out the math on this stuff.

Well that would be a good idea. When you do you might just see it does not add up and start to wonder what all the hype is about.

[ppreceipt]

Yep $1500 for some lights is crazy, better off getting a low power system like the ones I previously linked to.

[PNjunction]

Its for indoor lighting, and some outdoor lighting if possible. Maybe a small fan on the inside. I just need to figure out the math on this stuff.

O2Cool 10" fan - 12V * .5A = 6 watts
Rayovac Sportsman xtreme SE3DLN = 3 D cells. (300 lumens broad beam output)

These are cheap enough to see if you could actually stand living with them before wiring up a solar system. The cool color temperature of most led lights can sometimes be too depressing in the long run, and some may have an unsuitable beam indoors. Since both products can run on internal batteries, you can do a test-run first.

[dabbydo]

Struggling with solar, but want lights for backup lighting at home!

What think ye?? Working on solar, but cannot get act together right now regarding solar. BUT want home backup NOW.
I have 2 sets of 2 each auto DC LED lights, for a total of 4 lights. Each set of 2 draws 5 amps. Just want lighting, have plenty of other supplies. Can someone give me the figures on this: 114amp@1hr marine deep cycle batt, thinking about getting 2nd esp if needed. Want to charge on grid, NOT SOLAR. Wud like to leave hooked up to elec. so when elec goes off, I can switch to batt power. There R U guys out there that know your stuff! Your advice please!!!!

[Sunking]

Each set of 2 draws 5 amps. Just want lighting, have plenty of other supplies. Can someone give me the figures on this: 114amp@1hr marine deep cycle batt

It is very simple math

H = Hours
A = Amps
AH = Amp x Hours

So from that knowledge you know:

H = AH/A
A = AH/H

So lets say you have a 100 AH battery and apply a 5 amp load. So H = 100 AH / 5 Amps = 20 hours. However if you fully discharge your battery you do serious damage to the battery. To maximize battery life you only want to use about 20% of the battery capacity. So for that 100 AH battery, only 20 AH is usable so with that same 5 Amp load is just 4 hours.

Now with that said if the battery is only for emergency use you can discharge down to 50%. You give up some cycle life, but batteries only have a limited shelf life so if used only occasionally no harm discharging down to 50% because it will be worthless by the end of its shelf life anyway. So 50% of 100 AH is 50 AH so that same 5 amp load can be applied for 10 hours.

[loreoff]

Off Grid RV- just need some LIGHTS!!!

thanks for the info