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Hi,
I know this is a subject discussed before but it also seems to be one where the situation changes week on week!
I've got an old electron MR11 light that I've been running on 7.2V battery packs and Halogen bulbs. Inevitably my last bulb's blown.....
Is there a direct drop in replacement LED bulb that'll run off 7.2 V and is decent brightness? Battery life isn't an issue!
Thanks.
No
You need an LED, optics and a driver. Try cutter.com for kits
I've seen the cutter kits. By the time it's delivered and I've faffed about building the new lamp it seems I'd be better off just getting a DX light.
There seems to be a mass of new MR11 LEDs on the market but most say '12v', I'm not sure if that's really 12v or replaces 12v, it could be 6-18v for all I know.
Those are too wide a beam anyway for cycle use except as a commuter light
Harry/Tandem, I have been doing some lab work to back up a new website selling led GU10/MR16/MR11 replacements as they are the next big thing for domestic use and will provide huge energy and money savings to domestic and commercial end users once their price drops. We sourced many examples and wasted a huge ammount of money. Low priced (alibaba sourced) examples as found on ebay, lumstrumlights, lumineux and other cheap suppliers for between £5 and £10 are rubbish and their sellers lie about their light output (quoted 230 lumens we only got <80 at best).
The best one was a philips master led, costs £30 and chucks out exactly 124 lumens, they do not state this on their bulbs or website but say it uses 3W which it does to the letter.
The philips bulb is a fantastic piece of workmanship for the money with a proper optic unlike the chinese sh1te and has a built in regulator as well so works across all voltages from 6.2 to 13v (we tested it) and always draws 2.28-2.34 Watts.
As tandem says they are a wide beam design and would be great for commuting or pootling around but have no throw for distance.
Another drawback is that they are not IP rated i.e. their resistance to water or damp is doubtfull as they are designed for interior use and at £30 a pop you would be better off buying a Fenix E20, E21 or similar and a lock block.
I doubt whether you will see much better from an MR11 in the next couple of years as they are a compromised design for electronics as heat dissipation for anything over 3W is a big obstacle.
Hope that helps.