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Measuring A Car battery
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IDEngineer:

--- Quote from: Benta on May 01, 2019, 08:10:19 pm ---Seeing that the OP is in the UK, that's pretty much a dead end...
--- End quote ---
I did notice he was in the UK, but did not know that sealed beams are unavailable there. Really? There aren't any older cars on the road for which replacements are available? Halogens are generally standalone bulbs that insert into a reflector assembly; when replacement is required, the reflector remains and only the bulb is replaced. How do the British replace a failed sealed beam headlight on an older car?
Gyro:
The last time I saw sealed beams was on my Dad's Ford Zodiac back in the '70s. It was pretty old by the time he bought it!  :o

P.S. When the dipped beams failed he used to make lead acid powered camping lights with them (main beam filaments), very handy for finding the toilet block in the dark!
Benta:

--- Quote from: IDEngineer on May 01, 2019, 08:42:31 pm ---
--- Quote from: Benta on May 01, 2019, 08:10:19 pm ---Seeing that the OP is in the UK, that's pretty much a dead end...
--- End quote ---
I did notice he was in the UK, but did not know that sealed beams are unavailable there. Really? There aren't any older cars on the road for which replacements are available? Halogens are generally standalone bulbs that insert into a reflector assembly; when replacement is required, the reflector remains and only the bulb is replaced. How do the British replace a failed sealed beam headlight on an older car?

--- End quote ---

Nobody in Europe has been using sealed beams for decades. In fact, they are not allowed and must be replaced with E-codes. This is always done when someone imports a car from the US, otherwise it will fail inspection.

H2, H4 or H7s don't need a reflector for this application, just a socket is enough.
BradC:

--- Quote from: NiHaoMike on May 01, 2019, 07:19:19 pm ---Halogen bulbs sometimes fail in a not so graceful way, hence why desk lamps using them have a glass shield.
--- End quote ---

That glass is there more for UV than mechanical contact/failure.
Gyro:
Yes, they're pretty tough if you don't contaminate the envelope. Check out the shape of the one being used for IR reflow in the video - 2:58, after it's been abused at 16V for a while!  https://www.eevblog.com/forum/testgear/use-car-halogen-bulb-as-infrared-desolder-tool/
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