C4 LCD Display Speedy Universal Smart Battery Charger,Battery Capacity Analyzer for Rechargeable Batteries, aa Battery Charger, 18650 Battery Charger

Great charger. This works better than I thought it would and has features typically only available on more expensive chargers. The charger is easy to use and provides more information than a typical user would need. Excellent product for maintaining, charging, and seeing how much life you have left in your rechargeable batteries. Overall excellent quality product.

What can I say about the Zanflare C4 Smart Charger / Analyzer? I had mediocre hopes for the C4, assuming it wouldn't live up to its featured hype. But I am happy to say that it has thus far exceeded my expectations. I have lots of NiMh and LiIon batteries. LOTS, over 300. I also have 5 different smart chargers, and a slew of others. So my perspective comes from a comparison of things I already possess and use. My favorite Smart Charger / Analyzer up to this point was the Opus BT-C3400. So most of my perspective is related to that one. The ease of use and setting individual slot configurations is even nicer than the C3400. Additionally, like the C3400 you can set / reset the configuration of each individual slot "on-the-fly" with immediate response. The only feature the C4 doesn't have where the C3400 does is an automated REFRESH mode. Instead, you either manually use the Fast Test (discharge / charge [measure mAh on charge cycle]) or Normal Test (charge / discharge / charge [measure mAh on discharge cycle]) and simply do it manually 3 times to get the same process the Opus performs with its Discharge Refresh program. Sometimes it might be a hassle, other times it is nice to check the value between each cycle to see what kind of results you get at each point. What I've found is that when I need to refresh some old batteries, or ones that have not been used in awhile, where they seem to have lost some of their capacity, I can use the C3400 refresh and then "set it and forget it" until it is done. On the other hand, when I purchase new batteries, I find that if I use the C4 Fast Test manually, I might not need to do a full 3 cycle test to break them in. If the capacity is within 10% of the battery's rating, I then do the Normal test which provides the capacity from the "discharge" perspective (more accurate in my opinion), record my info and move on to the next set of batteries. The C4's display uses a white on blue background so is slightly less appealing than the C3400's LCD display, but is by no means difficult to read. In fact the C4 has a "virtual" battery that is always visible for each slot giving a nice and easy visual status without having to try and "read" something and without having to cycle through the "modes". Though you can cycle the modes just like the C3400 to indicate Voltage, mA charge rate, mAh capacity rate, Internal Resistance, etc. But that visual battery indicating a visual status is also always there, so you know "visually" about how close it is to being done with the discharge or charge state. Effect: I can look at it from across the room and just "know". The C4 appears to have good ventilation much like the C3400. It is a couple inches longer than the C3400, but it really doesn't require much more desk space as in either case you would want to have a bit of ventilation room anyway. I've used the unit on the major battery types (AAA, AA, 14500, 18650, 26650) and used the various current settings (even up to 1A * 4 slots) and the unit itself doesn't over heat or get any warmer than any other charger I own. So the "physical" characteristics are pretty similar. The exception is probably in the slots themselves. Rather than have a multi-tiered slot design like the C3400 has, they chose to simply make the slot "half circle" diameter the size needed for its largest battery support. This tends to make the smaller (AA, AAA) batteries "rock and roll" a bit when trying to place them. It takes more effort in other words. Not a lot more, but enough to certainly realize that it does. The C3400's two tiered system favors AA batteries for the smaller tier as they fit *almost* snug in that bottom tier. The wider batteries fit into the 2nd (upper) tier pretty nicely. So the C4 is not quite as nice as the C3400 in that respect. Additionally, the metal sliders are a little "bendy" (read as weak) so you may have to occasionally bend them to a straight vertical position for proper contact with the negative pole on the battery. Not a major problem, but something they should look at fixing in the future. So that I don't write a novel, I'll simply summarize here with possibly adding comments in the future as they become necessary: The Zanflare C4, much like the Opus BT-C3400, appears to be a solid Smart Charger / Analyzer and performs well. Could there be improvements? Maybe. But nothing major here is needed. I'm thoroughly pleased so far with the Zanflare C4, and the fact it is less expensive than my C3400 is simply icing on the cake.

This is an excellent device! It's the best battery charger out there, in this price range...imo. I had a very basic charger before buying this; it basically charged the AA or AAA nimh batteries...nothing else. Plus, I could only charge either 2 or 4 batteries at a time. With this, I'm not limited. 1, 2, 3, or all 4 at a time. I finally NEEDED a charger that was more versatile & told me what I want to know about the the batteries. Well, this charger does it all really. It's great knowing the voltage, charging time, capacity, etc. No having to wonder about the status of the batteries you're charging! Very happy & impressed with this! Seems to be well built, & great quality. The display is very clear & easy to read too. I've been charging at 500 ma...& 300 ma, to be easier on the batteries. The default setting is 500 ma. I'm really into recharging my AA & AAA nimh batteries. Much better & really saves money. I was just tossing regular batteries in the trash can, which is wasteful in the long run. This is definitely the way to go! Thanks for making a great charger like this! Next, an upgrade on the battery tester I'm using. I know exactly the one I want too, from DIYlful. I included some photos. It really shows how consistent this charges. The Duracell did very well. I wasn't even aware they were 2500 maH. Nice.

It is a good charger. The display and charging circuits work fine. However, the contacts are situated in such a way that it is difficult to position batteries that are smaller than an 18650 or a 26650. Smaller batteries are difficult to align with the charging contacts. Other than that, the charging circuits seem to work fine. I have not used all the modes yet but the circuitry seems fine. I bought it to charge 26650's and 18650's so I am happy but it states it is good for AA's and AAA's. Both of those are very tricky to put in the charger but that is OK with me since I have another charger for the smaller ones. I do not have the item that I ordered that will use the 26650's so I don't know how effective it will be to charge them when they are more fully discharged. I can update later when the item arrives. The display is nice and works fine and I like the backlight in the dark. I have not tried the vehicle charger yet, but it seems straight forward for use.

I live this charger. I have bought more expensive ones, and it does not do what this one does. I tried to rejuvenate almost dead cells with other chargers, and they would not do it. I then put them in this one and used the NOR test, and vola, it brought them back to life. It does have three modes, charge, fast test, and NOR test. Charge does what it says, it charges them, and pretty good also. However, it does not rejuvenate them. Fast test..I used it but I don't think it has much use. Maybe to see what the current capacity is, but I think that it is better to use the NOR test. Nor test. It charges the battery, then discharges it to see what the rate is, wiping out any memory effects, and then charges it again. It does this for 3 cycles and leaves you with a full battery. I tested several batteries this way, and even though they said 5000 ma, they really were less than 1500. I tested brand new IMREN batteries, they said 3500 ma, and all were at least that, if not a little more. But all were within 5 % or less than what they stated. So now I know what batteries to purchase also. They are a little more expensive, but then you get two to three times the battery also. The display is easy to read for me, and the unit is easy to use. It says End when done. You can adjust the charge/discharge current. You also have a dedicated button for reading each of the batteries, not like other chargers that you must cycle through.

I have now changed over 30 batteries with a mix of 18650’s, AA, AAA and it works well. At first I found that none of my batteries were not even close to the mAh rating, I was thinking the charger was bad, every 18650 I had would only charge to a capacity of around 600 mAh, the batteries were rating anywhere from 2500mAh to 6000mAh. The same on the AA batteries, should be 2400 got 1000 mAh. What I found was ALL my batteries just were not very good, so I bought some Samsung and Duracell and they charge up to the rating. Why I bought this unit over the others: It will measure the internal resistance on all 4 slots, not just one slot. You can control the changing current up to 1000ma (other only go to 800) It can also be a USB battery pack if you put 18650’s in the unit (no other unit had that) The overall unit seems to be build well, and if you are charging 4 18650’s at 1000mAh it does get very warm, but you can pick it up without burning yourself. Every other setting 300/500/700 there were no temperature issues. For a charger with a lot of features it is very simple to use. If you want to just charge a battery, just put it in and walk away, it will by default auto select battery type and set the charging current to 500mA, it will then flash END when it is down. The advance features require you to press the mode and current buttons within the first 10 seconds of inserting a battery to set the current and charge type (Charge, Normal test, Fast test). After 10 seconds the slot button rotates between, Volts, Charging current, Internal resistance, Time and capacity (mAh). The only thing I would change to make this unit better is a lager “END” message and show more than one item on the screen at a time, I would like to see Volts and mAh at the same time. It was nice to get a car power adapter and A/C adapter, other units did not include ether.

Exactly what I was looking for charges diff types. Very useful.

One thing I didn't notice another reviews is one annoying thing no one explained is that during the first 10 seconds when you're allowed to change the mode it's actually in the mode that it shows so if it shows charging it is charging. If it shows fast test it is discharging even though it's still flashing. this is frustrating because when you want to check the batteries voltage it is skewed by the fact that it is currently charging or discharging. so although it may not be a good battery voltage checker it does everything else quite well. It charges My AA's properly and even when I put a 18650 that was at 1.2 volts it knew it was lithium and charged it up a properly to 4.2v. when it reports the resistance reading sometimes it will report 200 and then when it's done charging it will say the resistance is 150. And next time I charge that particular cell it'll say 250. So the resistance reading is just a wild ball park. But I have noticed that the cells that are older and abused and far less capacity than they're supposed to generally will always show a higher resistance like up near 400. I like knowing that I can put some lithium cells in this charger and use it as a power bank to charge my phone. It's milliamp hour readings I've always been very accurate. There's no fan to wear out and go bad. When it discharges your cell it can only do a Max of 500 milliamp hours and does get quite warm so I generally use the 300 milliamp hour setting which is kind of annoying because then it uses only 300 milliamp hours to charge as well and takes forever when you're charging a larger cell. sometimes when I noticed that it's done discharging I'll restart at the 1amp hour charge rate to save time. I got a universal flat battery mount and attached wires to it and ran them over to this charger now I can charge all of my flat lithium's with this charger as well. All in all I'm really happy with this charger and now I've got all of my cell phone, camera and cylindrical batteries tested and labeled with their true milliamp hour abilities. There's so many mislabeled fake aftermarket batteries out there and we all need a charger like this to keep sellers accountable for selling mislabeled cells to us all the time.

Awesome Units When I clicked Buy I thought I was Only Getting 1 unit But it was for 2 .. I have am using this to test/check 18650 Batteries and it works Well .. took a while to figure out the menu .. press buttons .. done .. Very Easy to Figure out..

Very dissapointed. For a universal charger, it does not charge D type or 9 vrechargebale batteries. and the USB ouput does not work with NiMh batteries. If you're hoping to use this in conjunction with high capacity 2800mAh NiMh batteries to charge your mobile device, look elsewhere. Overall, unless you want to specially charge lithium ion batteries, this is not the best option.

Excellent battery charges and testers. These are invaluable tools for use in cell harvesting and testing large quantity of batteries. NiCad, Nimh, Li-ion.

Facil pour la prise en main .3 charge 300ma 500ma 1A et 2 fonction de testeur normal et rapide je ne pouvais pas donne plus de cinq etoile

too big, lcd display need to be better