Got a new charger-Miboxer C4-12, 4 slot X 3A/slot, total 12A output

[Lexel]

HKJ tested this charger and his conclusion is a good charger

only the USB Output is not good, but who needs powerbank on this monster charger anyway

[pinkpanda3310 (Pinky)]

@gauss163

@Lexel

HKJ tested this charger and his conclusion is a good charger

So what precisely is a “good charger”? Can “good chargers” burn your house down? HKJ never does any charger safety tests, and those are esp. essential for chargers that automagically choose “safe” charge currents.

“Beauty is in the eye of the beholder”

We’ve had a couple respected members give it the thumbs up but, of course, you need to make up your own mind on the matter. If you want to listen to the horror stories of houses burning down from chargers then that’s your prerogative but just bare in mind how many chargers are out in the world only a fraction of a percentage have caused fires and a portion of that would’ve been user error.

Since you seem reluctant to accept this as a ‘safe’ charger maybe you could run the safety test you speak of ?

[ARsee]

Texas_Ace (thanks TA) sold me a nice (like new) XTAR VC4 several months back, and it's worked out great.

Since, I'm getting into the multi-cell (4-8) lights, I'd like to be able to charge more cells at a time. At 3A/4-bays I'm liking that.

If the Miboxer C4-12 comes up on-sale anytime soon, I hope a heads-up gets posted here!

[Sales-Miboxer]

@ARsee

Texas_Ace (thanks TA) sold me a nice (like new) XTAR VC4 several months back, and it's worked out great.

Since, I'm getting into the multi-cell (4-8) lights, I'd like to be able to charge more cells at a time. At 3A/4-bays I'm liking that.

If the Miboxer C4-12 comes up on-sale anytime soon, I hope a heads-up gets posted here!

https://www.amazon.com/dp/B074XQVNDG you can buy it on Amazon

thanks

[ARsee]

Thanks but, that's not on sale.

It would be appreciated leomiboxer, since you have the time to respond to me, you respond as well to the safety concerns asked before my post.

Thanks again

[Sales-Miboxer]

@ARsee

Thanks but, that's not on sale.

It would be appreciated leomiboxer, since you have the time to respond to me, you respond as well to the safety concerns asked before my post.

Thanks again

what you mean of not on sale

About the safety, I think 3 years years warranty explains everything.

External power supply is more safe than Built-in power supply

for this charger, we sold more than 10k, and till now, there is on one feedback the safety problems

Thanks

Leo

[ARsee]

Thank you

[tatasal]

@gauss163

@pinkpanda3310

We’ve had a couple respected members give it the thumbs up

None of which involved any safety testing whatsoever. Chargers like this which automagically adjust the current and can supply high currents have the potential to have far more dangerous failure modes than those without such automatic current selection heuristics.

@pinkpanda3310

Since you seem reluctant to accept this as a ‘safe’ charger maybe you could run the safety test you speak of ?

If they send me one then I will evaluate it. But they don’t seem to want to send one - as a I said above.

Alternatively Miboxer could tell us what safety testing they performed and/or explain why they believe the automatic current selection will always be safe. Currently I don’t see any evidence available that would allow anyone to make any reliable inferences on such matters.

Better supply hard, scientific evidence to back-up your ‘claim’ that “Chargers like this which automagically adjust the current and can supply high currents have the potential to have far more dangerous failure modes than those without such automatic current selection heuristics” or else such claim of yours in nothing but hot air.

…. and we are talking about the Miboxer C4-12…this is our subject matter, not any generalized topic.

[pinkpanda3310 (Pinky)]

@leomiboxer

for this charger, we sold more than 10k, and till now, there is on one feedback the safety problems

So 10,000 units of real world use and only 1 reported safety issue. That’s 0.0001% ! I wish all electronics had that kind of safety factor.

[tatasal]

@gauss163

@tatasal

Better supply hard, scientific evidence to back-up your ‘claim’ that “Chargers like this which automagically adjust the current and can supply high currents have the potential to have far more dangerous failure modes than those without such automatic current selection heuristics” or else such claim of yours in nothing but hot air.

It requires only common sense. The current control logic / algorithm is much more complex for a charger that automagically dynamically updates the current based on various (unknown) heuristics. This additional complexity increases the number of failure modes, and the complexity of safety testing. For example, some failure modes might cause the charger to charge with much too high current - which could prove catastrophic.

@tatasal

and we are talking about the Miboxer C4-12…this is our subject matter, not any generalized topic.

I don’t recall anyone mentioning any other subject matter, so what is your point? “Hot air” indeed!

The common sense you are talking about is only unique to you. Present hard, scientific evidence, and I will believe you. If there is none, your “common sense” argument does not hold a not even a drop of water.

…do I have to remind you that you are ‘hot airing’ about fast charging rates…which is the feature of the charger of this thread?

Hot air your mind indeed!

[pinkpanda3310 (Pinky)]

@gauss163

@tatasal

Better supply hard, scientific evidence to back-up your ‘claim’ that “Chargers like this which automagically adjust the current and can supply high currents have the potential to have far more dangerous failure modes than those without such automatic current selection heuristics” or else such claim of yours in nothing but hot air.

It requires only common sense. The current control logic / algorithm is much more complex for a charger that automagically dynamically updates the current based on various (unknown) heuristics. This additional complexity increases the number of failure modes, and the complexity of safety testing. For example, some failure modes might cause the heuristics to choose much too high charge current - which could prove catastrophic.

@tatasal

and we are talking about the Miboxer C4-12…this is our subject matter, not any generalized topic.

I don’t recall anyone mentioning any other subject matter, so what is your point? “Hot air” indeed!

Did you request a free sample or kick up about safety concerns before purchasing your smartphone? If not you’re being hypocritical.

[tatasal]

@pinkpanda3310

@gauss163

@tatasal

Better supply hard, scientific evidence to back-up your ‘claim’ that “Chargers like this which automagically adjust the current and can supply high currents have the potential to have far more dangerous failure modes than those without such automatic current selection heuristics” or else such claim of yours in nothing but hot air.

It requires only common sense. The current control logic / algorithm is much more complex for a charger that automagically dynamically updates the current based on various (unknown) heuristics. This additional complexity increases the number of failure modes, and the complexity of safety testing. For example, some failure modes might cause the heuristics to choose much too high charge current - which could prove catastrophic.

@tatasal

and we are talking about the Miboxer C4-12…this is our subject matter, not any generalized topic.

I don’t recall anyone mentioning any other subject matter, so what is your point? “Hot air” indeed!

Did you request a free sample or kick up about safety concerns before purchasing your smartphone? If not you’re being hypocritical.

Talk about grapes that are really, really, sour! :+1:

[pinkpanda3310 (Pinky)]

@gauss163

@pinkpanda3310

[ Did you request a free sample or kick up about safety concerns before purchasing your smartphone? If not you’re being hypocritical.

Nonsense. I have much expertise on battery subsystems of laptops and cellphones since I have worked professionally in the field so I know quite well the risks, standards, etc which enables me to make wise informed decisions on their safe use.

But no such data exists for self-driving chargers.

So Mr Safety is a know it all…?

[pinkpanda3310 (Pinky)]

Lol, I’m done with this troll

[tatasal]

@gauss163

@pinkpanda3310

[ Did you request a free sample or kick up about safety concerns before purchasing your smartphone? If not you’re being hypocritical.

Nonsense. I have much expertise on battery subsystems of laptops and cellphones since I have worked professionally in the field so I know quite well the risks, standards, etc. This enables me to make wise informed decisions on their safe use.

But no such data exists for self-driving chargers.

[tatasal: There will be no replies to puerile posts - so don’t waste your breath].

Really, are you serious? What expertise are you talking about when the topic of this thread is the fast-charging feature of the Miboxer C4-12, I repeat, the Miboxer C4-12.

Let your self-proclaimed “expertise” provide HARD, SCIENTIFIC evidence against the Miboxer C4-12, the specific charger you are sour-graping about.

Oh, they say don’t engage a troll but I am now just to enjoy gauss163’s trollish behaviour hahaha

[tatasal]

@gauss163

@tatasal But I don’t recall you ever demonstrating any knowledge on such topics. So how in the world do you think you are qualified to assess these matters?

Hahaha….you are really hilarious… I never claimed I am qualified to assess such matters…it is you who claims to be an “expert”…but what is YOUR hard, scientific data as to put doubt to the Miboxer’s C4-12 fast-charge feature?

Troll!

[JasonWW]

The C4-12 also let’s you manually set the charge rate you want like a normal charger. It has 10 levels to choose from. If you want to charge you 18650 cells at 0.5A or even 0.1A, you can.

The automatic charge rates are a “feature”.

Just like a self driving car will still let you drive it if you don’t trust the auto system.

[RobertB]

@Lexel

HKJ tested this charger and his conclusion is a good charger

only the USB Output is not good, but who needs powerbank on this monster charger anyway

I didn’t see his review. What did he say was bad about the USB charging? I tested it out, and it worked excellent.

[Lexel]

@RobertB

@Lexel

HKJ tested this charger and his conclusion is a good charger

only the USB Output is not good, but who needs powerbank on this monster charger anyway

I didn’t see his review. What did he say was bad about the USB charging? I tested it out, and it worked excellent.

sure it works but HKJs standards are very high, he uses professional gear to test chargers and other electronics
He said its only using one battery bank and has fairly low output and some electronic noise.

http://lygte-info.dk/review/Review%20Charger%20Miboxer%20C4-12%20UK.html
“Conclusion

This charger can handle four 26650 LiIon cells at 3A, this is a very impressive charge current. It can either do automatic current selection based on internal resistance or current can be selected manually. For optimal charge speed manual selection must be used, automatic will use a high current for new cells and a low current for old cells.
The internal resistance measurement circuit works fairly well, especially on LiIon.
I wonder why the charger has a power bank function, the charger is too big to carry around and with only one cell feeding the power bank it cannot deliver that much output power. In fact it is a fairly weak power bank with a lot of noise.

I will give the charger a good rating.”

[everydaysurvivalgear]

Any one who read my review will see i did state i recommend manual current select with any smaller cells. I had IMR 14500 cells charge at 1.25amps which is more than twice the current i would usually charge them at. usual charge current would be 500ma max.

Is that charging current is dangerous? I personally think it would be okay seeing as they are IMR cells. I wouldnt go any higher than that current 1.2amps is twice the capacity. Id feel safer charger with 1amp and less. For the long longevity of the cell probably not the best. Ideally a 600mah cell should be charged at around 300mah.

I feel if you charge standard unprotected 18650s like some older Sanyo or Panasonic cells they will have fairly low internal resistance and auto charge may select 2-3amp output that will be to high. Once again probably not explosion causing but you would ruin the batteries fast.

Any older cells you should be careful with. That is why we preach to always watch your cells i know it sucks but its a just in case scenario.

On the bright side the C4-12 does auto regulate the charge current if the cells temp raises to high. That will mitigate some risk and its made out of fire retardant material.

Overall not a issue seeing as you can manual current select! You could easily put a smaller cell into a manual current charger and it starts at 1amp and you don’t notice and damage the cell?

I am no expert!