LED Batten light

[user 38219]

I have a 5ft led batten light and the transformer has failed.
The light has 400 LEDs in two sections.
I don't want to replace the transformer but was wondering if I could use the LEDs by connecting some or all of them to a battery or something like that for use in a shed with no power supply.

 

[mainline]

I have a 5ft led batten light and the transformer has failed.
The light has 400 LEDs in two sections.
I don't want to replace the transformer but was wondering if I could use the LEDs by connecting some or all of them to a battery or something like that for use in a shed with no power supply.

Have a look what the output of the driver is and go from there.

 

[user 38219]

Have a look what the output of the driver is and go from there.

My old transformer says 30-42v
1200ma
40w
I have found one on Amazon
22-42v
1000ma
40w
Would that be a suitable replacement considering the milliamp difference.

 

[Geoff1946]

My old transformer says 30-42v
1200ma
40w
I have found one on Amazon
22-42v
1000ma
40w
Would that be a suitable replacement considering the milliamp difference.

 

[mainline]

My old transformer says 30-42v
1200ma
40w
I have found one on Amazon
22-42v
1000ma
40w
Would that be a suitable replacement considering the milliamp difference.

Not really suitable, can you post a pic of your transformer

 

[Geoff1946]

Yes and no. Those are constant current drivers, which will automatically vary their output voltage, within the stated range, to achieve the 1200mA / 1000mA current through their load. If you use the 1000mA driver it will work with the led array you have but will be dimmer. I don't know how much dimmer, and I doubt if it's a simple proportional relationship.

If you want to re-use the leds on a battery source then you need to work out how the two sections are originally wired. If they are wired in series then each half is going to work in the 15 to 21 volt range.
If they are wired in parallel then they work in the 30 - 42 volt range. Get the idea ?
Now I'm guessing that the battery source you have in mind would be 12 or 24 volts. No harm would arise from connecting the lower voltage one to a 12 volt battery, or the higher to a 24 volt battery. They will light up to some extent, but I've no idea how much or if it would be useful. If they don't light at all reverse the connections.

Alternatively, if you want a cheap battery powered light in your shed, then 12volt led strip is readily available, e.g. on Amazon.

 

[Richard-the-Ninth]

​

Tricky6666, the only power supply I found on Amazon for those specs cost £13 and may or may not work, you can get a complete light for less than £10 click me Also I thought you said it was for the shed which has no power?

 

[gezb]

Checkout the item below on eBay.

It seems to be a better match than trying a lower powered 1000mA. Although the voltage range is lower, as stated above, the driver will adjust the voltage to maintain the constant 1200mA current:-

https://www.ebay.co.uk/itm/267000299490

 

[user 38219]

Not really suitable, can you post a pic of your transformer

Here is a pic of it.

 

[binky]

I put some of these in an off grid stable block, wired via a little car fuse holder to a battery. Worked a treat. https://www.amazon.co.uk/Interior-W...30118414&sprefix=van+led++12v,aps,193&sr=8-7#