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LEDs and battery math

Solotimberframer

Sep 26, 2022
1
Joined
Sep 26, 2022
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Ok, so I may be a bit of a layman regarding the finer points of electronics. But the following observations make no sense to me mathematically. Please help.

Observation: 50 count led string lights run for multiple nights on the same 3 AA batteries. Estimated amps required by the string (unsure of information) is 1 amp. Voltage is stated to be 4.5v. Batteries are 1.2v with 2.8 amp hours each in series.

By my math and understanding, these lights should ‘burn out’ after 2.8 hours. So how, WHY do they work for multiple nights without a battery change?

*note: the do of course become dimmer, but still provide sufficient light for the better part of two nights.

( factors that I think may contribute to this conundrum: inaccurate information regarding the amperage/wattage of string lights (can’t find specs))
 

Bluejets

Oct 5, 2014
5,985
Joined
Oct 5, 2014
Messages
5,985
Depends on the LED's involved.
Depends on the actual measured current draw which may change as the cells run down.
50 LED string arranged how...???
LED's can emit a "seemingly" similar light output for varying supply levels.
Were they pulsed (pwm) or hard on..??

Conclusion would be inaccurate/ incomplete information and basing outcome on assumptions rather than facts.
 
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