MiBoxer C4 -- 36% OFF promo at our Amazon store

By the way, I will leave office and go home for Chinese new year with my family tonight,but our Amazon store is always open...Order as usually.

Hello my dear BLF friends,

This is Leo of MiBoxer chargers.

Once again we have another promotion in our Amazon store of our new model, lower in price yet high in performance.

It’s the model C4- (http://www.miboxer.com/eng/p1.html)

To avail of this 36% discount, just follow these 4 very simple steps:

1. Go to www.amazon.com

2. Type in Amazon’s search bar: 18650 battery charger

3. Once there, go to page 3, you will then find the MiBoxer C4 product, then click on it.

4. Then use this code: K4AKZL8U —- you get 36% OFF sold by Miboxer the list price, and the ordering is done.

whats the difference between this and c4-12 model? thanks

C4: charging current is 800ma*4, can charge Li-ion 4.2V and 4.35V, Ni-CD/Ni-MH and LiFePO4, original price is USD29.99, you will have 36% off now

C4-12: charging current is 3.0A*4, can charge Li-ion 4.2V,Ni-CD/Ni-MH, price is USD49.99

You are not considering selling to international customers?

Just bought one … Many Thanks for the heads up. Great charger.

Free shipping to Australia: https://www.gearbest.com/miboxer-c4-12-\_gear/

Ordered, tnx!

Was going to suggest, even easier to find would be to use the link in your signature, www.amazon.com/shops/miboxer , to get to the storefront, and the charger’s right there up-top.

I got my almighty battery charger yesterday, and am playing with it now… quite nice!

I was afraid of it charging up a 14500 LiFePO4 cell at 800mA, but I did find how to step it down to 100mA without even looking at the pamphlet. :smiley:

Thanks again!

Dido … very nice charger … bargain … :slight_smile:

HKJ our resident charger tester and expert didn’t have a lot of good things to say about it but did say it was “acceptable”. He said with some cells if you don’t take them out when the charging cycle is complete, it will continue to charge and could damage the cell.

Anyway, with leomilboxer’s discount and a discount coupon I had for Amazon, for a total cost of $4.00, I couldn’t pass it up! :slight_smile:

Found the review on lygte, still looks good.

I don’t leave cells unattended, at least not too long, so for me that’s not an issue. In fact, unless proven otherwise, I assume they do exactly that anyway.

Cell gets topped off, current stops, cell “rests”, voltage drops, charger tops off again. Rinse, repeat.

It’s still an almighty charger.

That was the first version of the C4. The versions that now sell on Amazon don’t have the termination problem. I think Leo sent HKJ the newer version as well. I got one from Leo, and it terminates fine. HKJ needs to update that review.

Did you buy the C4 or C4-12?

I thought the C4-12 does not have support for LiFePO4 cells?

The regular one. LFP support is kinda important to me now. Just did a cap test on a “600mAH” cell, which tested at 490mAH. Testing a second cell now…

If anything, I don’t need 3A support. I’d rather slow-charge cells anyway. My Ope can do 2A if I would.

Oh yeh, dinno if the code also worked for the –12.

That’s funny! At first I didn’t get it but when I received the charger, there it was, right on the front of the box. I wonder if it’s also a “holy” charger? :slight_smile:

Okay, here comes the dumb question. The instructions state that the charger automatically senses whatever cell you insert into it and adjusts the charge current accordingly to the cell’s size or chemistry.

Why then does it have adjustments for cell capacity and charging current? Just asking.

So that you can override it when it makes a dumb decision, which it will do on occasion. I put a 700mAh LiFePO4 in mine and it decided to start charging it at 800mAh. It might have stepped down by itself shortly but I didn’t want to take a chance on harming the battery, so I forced it down to 300mAh.

It also allows you to increase the charge rate (within reason) it you’re in a hurry and and are willing to possibly accept a slight decrease in battery longevity. I normally don’t like to see a Li-Ion charger go above .5C, but will push some to 1C if I’m in a hurry and they can handle it.

That’s pretty much exactly what happened to me.

LFP (“600mAH”, tested at a paltry 480-490mAH) started charging at 800mA. Sez me, “That can’t be good…”, so knocked it down to 100mA (no rush). That’d be charging at almost 2C if I left it.

Yeah, might’ve adjusted itself after a while, but wasn’t going to chance it.

Can the C4/C4-12 charge 21700 cells?

Looks like the adjustments are mainly for LFP cells which I don’t have any.

I prefer to slow charge my cells but I guess it’s nice to be able to fast charge them if desired.

I charged some old, original eneloop AA cells that weren’t holding their charges very well and wouldn’t charge up to full capacity with other chargers. This one charged them up to full capacity but we’ll see how they hold their charge.