New Miboxer C4-12: "Upgrade C4-12"

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Mishanchik
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New Miboxer C4-12: "Upgrade C4-12"

Hi!

http://www.miboxer.com/eng/p6u.html

I see Miboxer updated C4-12.

New:

1. There was 1 button, it became 2 button
2. Add LiHV (4.35) and LiFePO4 (3.6V)

Very interesting is the length of the springs…

Edited by: Mishanchik on 05/08/2019 - 18:46
Lexel
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looks good

Ilumenati
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Glad to see Miboxer finished the web pages for the C4 upgrade series, the links have been incomplete for a while.

I don’t completely understand the difference between the C4-12 upgrade and the C4 upgrade.

If anyone could summarize the differences in the C4 family that would be great.

I sent a PM to Miboxer a few days a go to see if they had a simple side by side feature comparison chart but have not heard back yet. If they come through I will post.

christoph
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I have one of the upgraded ones was bought from amazon for 15.99 delivered several weeks ago.” here”:https://www.amazon.com/gp/product/B07H5FRZCC/ref=ppx_yo_dt_b_asin_title_...
Although I think my slot max is 2 amps not three
C

Chris

richbuff said “Sometimes, I feel depressed about my spirit having been cast down to the hostile surface of this one-star planet, without my asking God first, and without God asking me first. I have found that a brief burst of maximum light from what is currently the smallest size flashlight per power makes it all ok/fine for a while, until the next time I feel the need to repeat.”

Mishanchik
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Now, if she could still measure the capacity by discharge …

Pete7874
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christoph wrote:
I have one of the upgraded ones was bought from amazon for 15.99 delivered several weeks ago.” here”:https://www.amazon.com/gp/product/B07H5FRZCC/ref=ppx_yo_dt_b_asin_title_...
Although I think my slot max is 2 amps not three
C

The one you linked to is C4, not C4-12. Two different chargers.
Ilumenati
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I saw that charger on Amazon a few weeks ago and thought it might be a clone or bait and switch because it was so inexpensive. Looks like you got a good deal, not available now.

Sometimes on Amazon if the item does not have a name brand in the description so it avoids direct search and sales are low the algorithm will keep lowering the price. Also could be seller avoiding conflict with manufacturer for selling low price.

hasddie293
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Ilumenati wrote:
…thought it might be a clone or bait and switch because it was so inexpensive.

Sometimes on Amazon if the item does not have a name brand in the description so it avoids direct search and sales are low the algorithm will keep lowering the price. Also could be seller avoiding conflict with manufacturer for selling low price.

I also had an experience the same case as your here, but on a flashlight. Last time I’ve pre order a flashlight and to be shipped on 20th. I willing to pay because its offer discount and let say price drop by 8%.
On the 20 april, still not been shipped and guess what?? I was so tempted and I dont know where the idea fall from…I took a search of the flashlight on Aliexpress and you know what, it SHOWED UP.

What make me stunt, price set drop -17.5% lower than ori…plus free keychain light, it was really nice offfering! I felt very unfair but just bare to it.

Tip: This is Unathorized dealership avoid been caught. You cannot evenly seem them advertise but they offer was a really nice bargain. Forget about pre order, its crap. But do always look for this dealer, they also have high rating, do wholesale and it store name is pretty well known.

I wish that I know this secret early, I could been lucky. I thought I was the only see this. I hope next time I know where to look for.

Edit: I took a search on a my fav store, click on new arrival tab and and tadaaa, REVEAL hiden item. MAybe for their reviewer customer?Idk

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hasddie293
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Do look at the FB page, comparison with new vs older.
- 4.35V / LiFePO(3.6V)
- fit protected 21700 battery size
- temperature value option ( Celsius or Fahrenheit)
below link for more…
https://www.facebook.com/Miboxer88/photos/pcb.1143057665865261/114305761...

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Ilumenati
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Thanks hasddie293,

The FB page has the comparison charts I was looking for.

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Mishanchik
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I still wish Miboxer would implement a safety routine for charging LiFePO4 batteries. Like almost any other charger it will always (re)start with the standard charging profile for 4.2V Li-Ion batteries once there is a sudden power outtage. Guess what happens? A 3.6V LiFePO4 battery will be overcharged to 4.2V. So, a simple "press button to start charging" action would suffice to prevent automatic restart (with the wrong charging profile). Certainly, the user would still have to doublecheck if the right profile was chosen.

 

Alternative idea: How about making the LiFePO4 profile the standard routine, e.g. by a small switch on the bottom side of the charger?

hasddie293
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Still no review/test over “Upgrade C4-12” here in Blf, but really2 hope there will be no mess up since older C4-12 perform so well already.

My expectation is that its will perform as the C4-12 except it can handle long battery, lifepo4 and all slots should work well.

In search of the most ideal flashlight in town:
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4. Quality
5. Price$$$

Mishanchik
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Lux-Perpetua wrote:

I still wish Miboxer would implement a safety routine for charging LiFePO4 batteries. Like almost any other charger it will always (re)start with the standard charging profile for 4.2V Li-Ion batteries once there is a sudden power outtage. Guess what happens? A 3.6V LiFePO4 battery will be overcharged to 4.2V. So, a simple “press button to start charging” action would suffice to prevent automatic restart (with the wrong charging profile). Certainly, the user would still have to doublecheck if the right profile was chosen.


 


Alternative idea: How about making the LiFePO4 profile the standard routine, e.g. by a small switch on the bottom side of the charger?

1. Who said that this function is no in Upgrade C4-12? Miboxer introduced it else in C2-4000: https://youtu.be/zLCDC-5KV5A
2. LIfePo4 cells are not so easy to bring to an explosion. Charging voltage 4.2v for them is not terrible: https://yadi.sk/i/L_E7cdG4ALoLoQ

Lexel
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Mishanchik wrote:
Lux-Perpetua wrote:

I still wish Miboxer would implement a safety routine for charging LiFePO4 batteries. Like almost any other charger it will always (re)start with the standard charging profile for 4.2V Li-Ion batteries once there is a sudden power outtage. Guess what happens? A 3.6V LiFePO4 battery will be overcharged to 4.2V. So, a simple “press button to start charging” action would suffice to prevent automatic restart (with the wrong charging profile). Certainly, the user would still have to doublecheck if the right profile was chosen.


 


Alternative idea: How about making the LiFePO4 profile the standard routine, e.g. by a small switch on the bottom side of the charger?

1. Who said that this function is no in Upgrade C4-12? Miboxer introduced it else in C2-4000: https://youtu.be/zLCDC-5KV5A
2. LIfePo4 cells are not so easy to bring to an explosion. Charging voltage 4.2v for them is not terrible: https://yadi.sk/i/L_E7cdG4ALoLoQ

at least a charge profile memory would be nice if the charger detects that between shut down and restart the cells were not removed and charge was not complete
that could be implemented with just a few uA standby drain simply keeping monostable circuit held in the not removed position by the battery voltage

but on the other hand its not so wise to keep battery charging unmonitored by the user, a power loss in your living place is with the amount of electrical devices in modern times usually not unnoticed

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@mishanchick, they can still catch on fire, just at a higher temperature.

My very own high current Beryllium Copper springs Gen 3:
http://budgetlightforum.com/node/67401
Liitokala Aliexpress Stores Battery Fraud: http://budgetlightforum.com/node/60547

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It seems to me that MiBoxer marketers do not specifically make it possible to make a perfect product. Considering the high price, and specifically half from SkyRC 3000, what should they have added at least one slot the function of measuring cell capacity by discharging? And then there would be an almost perfect device. Even Xtar realized that this function was needed and added it to VC4S.

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MiBoxer already has one of the best analyzing chargers in the C2-4000, problem is it requires that loud, bulky fan. I’m surprised the VC4S added that and stuck with the stupid voltage dial where you cant accurately tell what voltage your battery is

Mishanchik
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С2-4000 is out of production apparently, because it is not on sale anywhere.

hasddie293
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Mishanchik wrote:
What should they have added at least one slot function of measuring cell capacity by discharging? And then there would be an almost perfect device. Even Xtar realized that this function was needed and added it to VC4S.

Lii-500, VC4S had function of discharge… only question of, how will they perform on their discharging style…I heard issue rise one of em.

But if Miboxer added discharge function, it could had jack the price even higher?IDK…

I also consider the price, just a bit on high side though…but I had bought it LOL . But don’t expect their sale could beat other competitor like XTAR, LIITOKALA, OPUS

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Mishanchik
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Interestingly, fixed MiBoxer problem 3 slots in the Upgrade C4-12?

Old C4-12 – problem (reviews from BLF)
C4-Plus – problem (reviews from Aliexpress)
C4S – problem (reviews from BLF)

I want to understand – did the MiBoxer engineers work on the bugs, or their problem of the updated C4 series was transferred to Uprgade C4-12 also.
Apparently the quality of products is affected by the fact that it is produced in very small batches.

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What is “problem 3 slots”?

Mishanchik
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Slot 3 stops working after a short time.

For example: http://budgetlightforum.com/node/58640

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contactcr wrote:
What is “problem 3 slots”?

Never had a problem with slot #3 with the two C4-12’s I own, and still don’t. Been close to two years. I guess there were 3 people who reported slot 3 not working. I’m sure MiBoxer has sold more than 5 of these.

Mishanchik
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RobertB wrote:
contactcr wrote:
What is “problem 3 slots”?

Never had a problem with slot #3 with the two C4-12’s I own, and still don’t. Been close to two years. I guess there were 3 people who reported slot 3 not working. I’m sure MiBoxer has sold more than 5 of these.

3 people are just an example of one topic.
Read reviews on Amazon and Aliexpress – many people complain that the 3rd slot stops working almost immediately after purchase.

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I also have two C4-12’s used for over a year and a half without a problem

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Knock on wood, my original C4-12 hasn’t had any issues with slot 3 either.

Now, as far as using inaccurate IR measurements to automatically select charging current, umm… yeah… Miboxer needs to rethink this one. In some cases it works OK, in other cases, not so much.

Mishanchik
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Super sale Banggood – Upgrade C4-12 $28.95

Banggood – Upgrade Miboxer C4-12

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The upgrade Miboxer C4-12 has finally arrived home. First impression, box look very identical to older one except bit longer. So it has 2 button, nice. So description say “ Fit protected 21700” yeah, I tested with protected Klarus GT21-50…it fit well! But haven’t yet test cell charging, so how it works I’ll tell them later on…sorry my cell haven’t drained yet. Nice add to temperature selection, celcious or farrenheit.

Only one took my attention, the LCD backlight especially on the right side…I can see 2 beam/light very bright… I was wondering why I’m seeing this, I thought it some kind of LCD minor faulty probably from shipment. Is anyone on Blf experience this???? It look like uneven spreadout of light, a bit ugly for me. But I’m fine, that not my big case tho.

ofcourse Backlight function works well indeed brighter. Gues I have to mail them about that issue.

In search of the most ideal flashlight in town:
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Mishanchik
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Well, I finally got New Miboxer C4-12!!!
Immediately I wanted to do the test, I discharged Ni-Mh AAA LADDA to 0.05V and put the cell into the charger. At first he wrote “Err” and began to charge a droplet charge. With a voltage of 0.08V (not 0.8 !!!), he saw the cell, recognized it as Ni-Mh and set a minimum charge current of 0.1A based on the internal resistance of the cell over 1000mΩ ( “—-” ). When the internal resistance of the cell dropped to 400mΩ, the charger raised the current to 0.2A and so on. By the end of the charge, the internal resistance was 58mΩ and the charge current was 0.7A.

Tell me, what else is there a charger that can charge so beautifully in automatic mode?

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