MiBoxer C4 Smart Battery Charger: Review & Test

  • 🎬 Video
  • ℹ️ Description
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An in depth look at the new intelligent battery charger from Miboxer. This new model offers charging at up to 800mA for Li-ion cells as well as a testing function on slot 4 for capacity and battery internal resistance.

How does the C4 hold up against other chargers? I compare it to the Nitecore D4 one of the most popular chargers on the market.

Sample supplied by MiBoxer for independent review

Details from the maker:
C4 Miboxer Charger
input Voltage :AC 86-265v,50/60HZ 0.4a(Max) ,DC12V 2A
Output(Max): 4.2V /4.35V/3.6V/1.48V
Output Current: Li-ion/life PO4:(high:800mA * 4,Low 350mA *4)

NI-MH/NI-Cd;(High;300mA *4) (Low:150mA *4)

Compatibility; IMR/Li-ion(4.2v/4.35v)LifePO4(3.6V)
10340/10350/10440/10550/12340/12500/12650/13450/13500/13650/14350
14430/14500/14650/16500/16340(RCR123)/16650/17350/17500/17650/17670 18350/18490/18500/18650/18700/20700/21700/22650/25500/26500/26650

Capacity and resistance test features

💬 Comments
Author

I like how detailed your charger reviews are. Thank you for taking the time out and giving us the correct and needed information. Would like to see a review on the new MiBoxer C4-12 charger...

Author — Frank Urban

Author

Hi, love your videos! Quick question: can the can the VTS CB1 battery tester, tell if batteries are any good?
Thank you

Author — Victor Nishimoto

Author

Hello,
Thanks for your videos on chargers.
I wanted to ask if it will charge 18650 Li-ion 3.7 V battery cells. The box says 4.2/4.35 V so I am not sure for my 3.7 V cells.
Thanks

Author — world valeur

Author

Would be interesting to see an updated review, since the C4 is now on version 3 or 4, and has apparently addressed a lot of the issues raised in this video.

Author — sbowesuk

Author

shame it looks a good charger, if it did capacity and resistance test in all 4 bays i would defiantly get one. cant someone make a charger that does all functions in one unit. thanks for the review

Author — If It Ain't Broke Still Fix It

Author

what is approx charging time of those 4 batteries you have at 800mah ?

Author — Robert B

Author

Hello. I've watched all your charger tests and still don't know which one to choose. I need 18650 and AAA nimh for charging. I do not exclude even the other secured 20700. Budget is capped at $ 20. I wonder if I should buy a Miboxer C4 V4, what do you think about it? Or maybe different? He wants it to have discharge, capacity measurement and battery resuscitation functions. From what I read, Miboxer C4 V4 has these functions.

Author — Kamil

Author

Those raised points on the sliders are very important because some cells have a flat top without a button, and won't charge if there is no pimple on the positive contact of the charger.

Author — tasmedic

Author

Just bought one of these on Amazon, apparently it does not have manual discharging, it says so in the description but I guess I didn't look close enough. It looks exactly like yours, but the C4 badge is not Chrome. Also, there are more sellers on Amazon that have identical units to mine, but DO advertise manual discharging. So confused. Am I buying fake ones?

Author — Bradley Meyer

Author

So which 1 is better please? Do you recommend a better one...Thanks

Author — PLACEBO KONFUSION

Author

hello, did you test the battery charger in test mode, discharge mode, refresh mode?.. how is it?
can you made a video with this topics?
how are these modes used?

Author — Joel Enrique Rubiano Arevalo

Author

That's curious that it continues to trickle charge the battery.
The listing actually says that it shouldn't.
Useful to know.

Author — Joshua C.

Author

Have you testrd this one: seems to have some positive reviews on Amazon.

Author — Aaron Brown

Author

I have just got hold of the C4. Does anyone know if they have changed this device because the screen layout on mine is different and I can’t, for the life of me, figure out how to enter the slot 4 capacity check mode. It is mentioned in the manual but holding that ‘Mode’ button does nothing for me. 😟 Any ideas?

Author — TDCatTech

Author

Will this charger work with ultra fire bro 18650 4000mAh 3.7v li-ion battery’s?

Author — RedC Rambler

Author

I agree on your critique. Too bad slot 4 is only one where you can discharge then recharge to check capacity of battery. All 4 slots would be the way to go so I will not purchase this charger because of that issue.Thank You very much for this informative video.

Author — bendari

Author

I currently use 'famous' Powerex MH-C9000 and am NOT satisfied at all. Considering C4 as replacement. As you are not satisfied with C4 100%, please let me know which is the Best charger in your opinion. I do like C4's display (instead of cycling data on MH-C). MH-C 9000 is confused many times when inserting discharged battery and refuses to charge it a t all. Thanks in advance.

Author — YT

Author

I don't get this. I bought one and it can't fit batteries bigger than 18650. I bought it from the manufacturer directly. I feel cheated.

Author — Dimensional Breads

Author

NOT for me cause charging output is weak.My charger will charge 2 batteries @1 amp each!

Author — bendari

Author

Are you serious?No cutoff when completed?only one slot can test capacity?In a charger as big as my bedside table in 2019?Should have read the comments before buying!!!

Author — Saiman Latinski