Can a 5A protected battery run a 5A driver?

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negev
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Can a 5A protected battery run a 5A driver?

Seems like a bit of a silly question but am not sure if a marginal >5A draw might trip the overcurrent protection?

question465
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I have a question that points in the same direction as your’s. I asked it a couple of days ago: https://budgetlightforum.com/comment/1798753#comment-1798753

It’s about this combination:

  • battery: Keeppower 18650 3200mAh P1832U (Blue-white) 2020
  • flashlight: Convoy M21B

That’s my topic:

There are many different versions of the Convoy M21B flashlight. There are different LEDs you can choose from and different amps (3A – 8A I presume).

This version seems to use a maximum of 5A. There is a review of another version of the M21B, featuring a different LED. The review states about 5A for the 100 % mode, 1.5A for the 30 % mode.

The maximum continuous discharging current of the Keeppower battery is declared to be 8A.

Question: Am I right to presume that the battery is powerful enough to work with the Convoy M21B flashlight at every time and mode? I am not sure whether or not there might be power peaks that might exceed the amps of the battery. As far as I understand the protection of the Keeppower battery will trip far beyond 8A, but I am not sure if the battery might suffer when used in a flashlight as powerful as the Convoy M21B. The manufacturer Keeppower warns: NEVER exceed a battery’s maximum continuous discharge rating.”

negev
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Not sure why you need to hijack my thread to ask the same question again but whatever lol

Funtastic
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negev wrote:
Not sure why you need to hijack my thread to ask the same question again but whatever lol

That’s right, he should stick to his own thread

Funtastic
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negev – That would depend on whether that 5A driver is actually pulling 5 amps. It will also depend on whether that battery can perform at a higher current rating than what the protection chip is rated for. It also depends on how much voltage sag it gets on a 5A load, most batteries will have voltage sag and run below what a driver is rated at anyway

question465
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Because both questions share the same logic.

When a > c, then a + b > c

The flashlight I’m referring to is run by a 5A driver as well. The only difference is that I am using a protected battery that features 8A but not 5A.

thefreeman
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Normally it should allow its rated current and trip a bit higher, like a 500W PC PSU wont trip at 500W but arround 20-30% higher because you are supposed to be able to use it up to 500W.
But in practice that really depends if the manufacturer properly rated its protected cell.

negev
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I’ll try it and see then