Test: Acebeam/Microbluebear/Supbeam MRC18650NP-230A

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leaftye
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Test: Acebeam/Microbluebear/Supbeam MRC18650NP-230A

 

Packaging

 

Photos

Top & bottomLabel pic #1Label pic #2

 

Discharge Graphs





Charging Graphs




 

Notes

Batteries provided for testing by: Acebeam, which used to be Supbeam, and was briefly Microbluebear.

To simplify testing and prevent mistakes, batteries in each test were charged at 0.5A and discharged to 2.80V.

This is the first protected battery I have tested. Unfortunately I believe the review samples I tested both had faulty protection circuits. If I used more than the slightest pressure on the contacts, the battery would produce unusual results that made some tests impossible. For example, I was unable to complete internal resistance tests with the Opus BT-C3100 or Turnigy Reaktor. I was able to test ac impedance, but had to use such light pressure that the results are much worse than they probably would be if the protection circuitry worked correctly or if it didn't have protection. Using such light pressure influences the results of all the charge and discharge tests, and I had such a difficult time testing at 3A that I gave up after several attempts.

It worked in all the flashlights though, even the two with tight fits. Given my difficulties during testing, I did not expect it to work in any of the flashlights, so maybe there is a flaw in the way I test batteries. Instead of calling these batteries bad, I will accept that my testing methods might possibly be flawed, so I will say that the results of these tests are inconclusive.

Additional battery tests --- Donations

The low mode should be lower.

leaftye
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Because of the difficulty I had testing these, I don't know if this test is worth anything since it's the only one published so far.  I really want to see how the other testers of this battery fared. 

The low mode should be lower.

zeremefico
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Not MICROBLUEBEAR again!
Anyway thanks for the review.

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MRsDNF
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Thanks Ieaftye. Its good to know.

 

djozz quotes, "it came with chinese lettering that is chinese to me".

                      "My man mousehole needs one too"

old4570 said "I'm not an expert , so don't suffer from any such technical restrictions".

Old-Lumens. Highly admired and cherished member of Budget Light Forum. 11.5.2011 - 20.12.16. RIP.

 

lagman
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I just fried one of the batteries I received while testing it.
I was testing the high voltage cutoff using the NIMH function of my hobby charger which is a very bad idea. I did that mistake before but didn’t learn… When the PCB cuts off the voltage shoots up to 30V and it killed the PCB.
I tore the battery down so we will have nice pictures of the inside. Smile
Review will be published before the end of the week.

My English isn’t perfect but I’m trying to improve it. If you see something that doesn’t sound right or is just plain wrong, please feel free to point it out! Smile

ledoman
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Leftye, nice review again. I did few tests but could not pass much over 2A. I've got connection termination somewhere in between 2.5 and 3A. Tryed several times but failed so I stayed at 2A. It looks the capacity at that current is good enough. See my post here. I see your curves differes between cells. Maybe there is same issue with my samples.

leaftye
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@lagman

Sorry to hear about that mishap, but I'm looking forward to seeing what's under that wrapper.

 

@ledoman

Thanks for posting that graph.  I bet these would be way more consistent if the protection circuit was removed.  I may give that a shot, but I won't have time for that for at least another three weeks. 

The low mode should be lower.