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?

I have a question that points in the same direction as your’s. I asked it a couple of days ago: Test/review of Keeppower 18650 3200mAh P1832U (Blue-white) 2020 - #13 by question465

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.“”:https://www.keeppower.com.cn/products_detail.php?id=657

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

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

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.

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.

I’ll try it and see then