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I have a 12v desk lamp running from a 12v lead acid battery but the full brightness doesnt appear.?
I have a 12v desk lamp running from a 12v lead acid battery. The battery reads 13v on standby, then when the light is turned on, it initially drops to 8v, then climbs up slowly and finally settles on 12v. This results in a dim light for a few minutes when the light is first turned on. I was wondering what causes this.
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1 Answer
- Walter shumateLv 41 decade agoFavorite Answer
Heating up the filament if its a standard incandescent will cause the drop if its a LED I'm clueless Sorry
Source(s): 18 Years In Construction and Pro-Handyman