Not really, it is not the way it works.
The actual cell probably has vent holes into the USB/protection top, it could also be a weak spot designed to blow out.
The battery almost looks like the Keeppower battery, but the Lumintop has vent holes at the plus pole. So, is the Lumintop the better and/or safer battery compared to the Keeppower USB?
I am not referring to the charging/charge complete LEDs, but to the holes that can be seen at the top of the Lumintop battery you tested. The golden positive pole in the middle of the top features two holes. They are used to vent gas and realease pressure, right?
“Both batteries has a big vent hole that is used for the USB connector.” —> I don’t really understand this. Sorry, please help me, I’m a newbie! So, do the vent holes still work, even when you connect a USB cable to the USB connector or will it block the vent hole so that overpressure cannot get out of the battery?
Do you think that the Lumintop battery is safer than the Keeppower?
It states as following: "The wire is connected to the plus pole on the battery and the other end goes to the circuit in the bottom of the battery. The vent holes, from the pressure valve, can also easily be seen here, including two more."
I can't see or touch the wire which should connenct the plus pole and the bottom of the battery. Doesn't the Keeppower USB feature such a wire? I have another proceted battery where I can easily touch and feel the wire. And if so, is the protection good enough anyway? I also can't see any vent holes. Like you mentioned before, they might be hidden underneath the cover, right?
That was written when all batteries had protection at the back, with front protected batteries you do not need a wire on side of the battery.
The reason for the wire is that the protection electronic need connection to both + and - on the battery. At the back there is only the - (The can) and need a wire to the front, but at the front the electronic can connect to both + and - without any wires.
That battery doesn’t trip the protection until 13-14 amps, so that’s not a problem. If it’s the 8A driver in the Convoy you might want to go for an unprotected 15A+ battery. A battery’s voltage will sag on load and the higher amp battery you use, the less it will sag at 8A.
I use a Samsung 30Q in the C8+ and a Molicel P42A in the M21B
I have tested the Keeppower 18650 3200mAh P1832U (Blue-white) 2020 in a Convoy M21B (XHP 50.2, 5A maximum output).
On high mode, the battery lasts for about 1 hour and 45 minutes, on turbo it lasts for about 35 minutes.
The M21B doesn’t have a low voltage protection, it just starts to blink when the voltage gets too low. I have a question concerning safety issues here. Let’s imagine I would not turn off the flashlight when the low voltage warning starts to blink: is there no problem because the Keeppower battery is protected against over discharge? Would the flashlight just turn off when the battery’s safety will kick in? And what will happen next? Is it safe to charge the battery again and keep using it even after the over discharge protection has been activated?
And finally, here is just another question: a couple of days ago I forgot that I was charging the Keeppower battery via it’s USB-port. Probably it was connected to the charger for about 3 hours after charging has been completed. When I cut off the power plug of the charger, the Keeppower’s blue “charging complete” lamp was still on. Is this a sign of a probable overcharge, despite the battery has a protection against over charging?