how long does a secondary battery last

[Regan Lurker Find all posts View Profile Close Regan]

Hi guys if I run a led flood light that draws 3.6amps off the secondary battery will it drain quick is this a lot of amps?

[cfryback Find all posts View Profile Close cfryback]

Depends on Amp Hours of the battery, so in theory a 55AH battery with a 1 Amp draw would last 55 hours. Conversely, lets say your battery is a 36AH battery, you would get 10 hours out of it.

*Actual battery draw will vary in real world conditions*

[Chris220220 Senior Member Find all posts View Profile Close Chris220220]

They say never drain an SLA battery fully. Always keep the voltage above 10.8.
So your 36 AHr battery should only be at most 75% discharged. (most say 50%)
Which is then only 5hrs. 3.6 amps is not bad if it is bright light. Laptop can draw up to 4.6amps when charging.
A fridge 2-4 amps and a winch up to 100amps. you can get some good 1 amp 12v fluro's and LED stips these days.

[Regan Lurker Find all posts View Profile Close Regan]

Ok thanks fellas the light is from hid lightsdownunder I was thinking of running 2 which would in total drsw 7.2 amps but they would mostly be for reverse lights while car is running and maybe the odd occasion on battery while night fishing

[waltec Senior Member Find all posts View Profile Close waltec]

Hi Regan, 3.6A works out at about 40w, that's a hell of a lot of LED power. I have a 72w LED light bar for the front of my Prado, great for driving, not sure I'd want it for fishing or camping light though. 18w flood light seem to be what most are fitting as worklights on the back of their Prados

[macaroon1 Advanced Member Find all posts View Profile Close macaroon1]

I recently replaced my 50W H3 Kaymar rear worklight with:
http://www.ebay.com.au/itm/330675106...84.m1423.l2649
24w a kicks out plenty of light, would not go much brighter. I'm not good with electrics but I'd go LED rather than HID.

However to have a rear worklight you'd
1. Have to make your own bracket /rear wheel spacer
2. Find Amt's thread, he sells the bracket/rear wheel spacer cheaper than:
3. Buy one of Kaymar. Just buy the pole not the rear worklight as there new LED lights are expensive as....I got a guote!!! Retrofitting the ebay one's is simple....it's just the extras you may want i.e wiring it all up.

You could wire the signal into the reverse light so when you reverse the light pops on?? Or have an isolator switch in cabin to turn on/off at leisure.
Ta.

[Guest Close Guest]

I started with 2x18W LEDs and I'm now down to 1x27W LED. That's lots of light for me. And they are quick to turn on unlike HIDs.

[Regan Lurker Find all posts View Profile Close Regan]

Ok cool thanks guys for all the help I might just go a 18 watt led anyone recomend a good led light bar are aurora any good

[Regan Lurker Find all posts View Profile Close Regan]

sorry i ment a good front led light bar any brands people recommend