Best bang for the buck charger? Anything on the horizon?

I don’t assume the worst,I just want the best. I like its internal resistance feature. That is almost something that is a must have, not sure how accurate it is or if a separate tool does it better for cheaper (will research after post). But it said a brand new VTC6 was like 40 and a Samsung 25-R at 60. LG HG (brown) that have had a little use showing 100ish. I like the idea of bringing batteries back to life as well, got a bunch of laptop batteries that I run cheap lamps off that could probably use some TLC. I guess it knows how to charge and discharge it better than a regular cycle?

If you want the best then be ready to pay for it and get the skyrc MC3000 (around $90)
or a 4channel hobbycharger (around $200)

Read my posts again.
The IR works on the OPUS.
It does NOT work on the Lii500.
There is a non-charger process to find IR with voltmeters. Looks complicated to me, but probably more accurate. I find the IR for the OPUS to be a rough ‘measuring stick’. As long as you keep measuring the same thing with the same stick you get some sense of status and progress.

If anyone has figured out a way to get reasonable IR with the Lii500 I’d certainly like to know. Or was I unlucky and got 3 bad ones?

Frankly if I had to only have 1 charger it would probably be the Opus simply because I can do more with it.

I have read of problems with the MC3000 in the reviews at Illumination Supply—If it’s a mass produced item in these times—I’m sure there’s a certain amount of failure—- On the top end of prices I might pay the extra for a dealer in the states with a good return policy

If you are looking for [perfect], you aren’t going to find it.
You did ask for [best bang for the buck]. In that category there are always trade-offs. You have to decide which are important for you. What you’ll get here is other people’s opinions. They may not be the same as yours. If you are like me, you’ll have to own and use an analyzing charger for awhile to even figure what is important to you. And, you may find that changes over time as you gain experience.

I’m in radio controlled planes so used lipo batteries and hobby chargers for years before I got into li-on. At first I used the hobby chargers. Works fine but it’s 1 battery at a time unless you cobble together some kind of holders. Then I got the Opus. I almost completely quit using the hobby charger. Opus was much easier, and faster. When I heard about the Lii500, and read the reviews I picked one up. I didn’t much like it at first. I’ve grown to appreciate it’s qualities and use it routinely now. It will do pretty much what most people want. The Opus will just do a few more things. Lube the fan, get a better power supply (cheap-I got a used laptop 12v/5A at a PC recycle store for $2), and most of the shortcomings are not an issue.

You can fix some of the issues with the OPUS, some you can’t. The shortcomings on the Lii500, you can’t fix those. They are just missing.

So the Lii-500 doesn’t actually give an IR reading? Or just not one that is remotely accurate? That seems to be the only thing it lacks versus the opus?

I have no clue about pulse charging and how it effects the battery life; But it just seems like a constant charge would be better? Were the old TR-01 and Xtar chargers pulse or direct?

I have used the opus some now and I have some old batteries from a laptop battery (they still work for my cheap 18650 flashlights that don’t have any over-drain protection so I use them for those, (thats another topic, next flashlights I buy I really would like some that are cheap but won’t just run a battery seemingly until it has no voltage left). I decided to try and run refresh mode and 2 or 3 days later it looked like it was doing another charge cycle. Will it just indefinitely charge and discharge a bad or near bad battery or did it need like 5 days and I pulled it early? (had to pull it, was leaving and I don’t like leaving any charger unattended for long periods)

Really my old TR-01 does the job of charging the cells just fine. Really anything beyond a safe charge is just bells and whistles (which are k00). Seems like its a bit premature for really good IR readings and what-not at a decent price point. I gotta say I am leaning towards an Lii-500 alibaba style (I also like that it has USB output because sometimes on trips I like to know that I can pack extra cells and my charger and use it to charge a cell phone or something since I have plenty of cells around.

I think I have an old laptop charger around somewhere, are they the correct polarity for the opus (saw a warning in the manual)? Does it need more juice or is that just the Lii? Got a bit confused on that.

IMO the IR on the Lii500 is useless.
If you use the IR on the Opus, compare old tired cells to new good ones you will easily see the difference. Once you get a bit of a handle on that you can readily check the general ‘health’ of a cell. Do not compare AAA to AA to 18650, to 26650, etc. You can only compare the same size and chemistry and get meaningful information.

You can cycle Lion cells all you want, ain’t going to do much good. A full cycle is completely dependent on the cell capacity, charge rate, and discharge rate. NiMh……may, but not necessarily, benefit from cycling. LSD cells don’t seem to be helped much by it.

Use the Opus for awhile. Learn. Come back after you play around awhile. You will have answered most of your own questions.

Yes, + 1.

Actually, the ‘refresh’ mode is designed for nimh and nicad cells, and they benefit immensely from this mode, especially those cells that are used in very low discharge amps, like remotes, or in lights that seldom get used.

I have never used the Refresh mode on my Li-ion cells, either in my Opus or iCharger, as it simply takes out another cycle from the cell, no benefit whatsoever.

Okay, so no refresh or discharge mode for lion cells. That is good to know. Probably just wasted some battery life, glad I tried it on old cells.

Oh I can definitely tell some stuff from the IR but it is like everyone says, it is a rough estimate. I think that technology needs a bit of time to develop. A brand new VTC6 that came in around 40, new Samsung25r around 50, used LG HE2s at around 60-70, used LG HE4s around 50. But the numbers change quite considerably on the same battery at different times, I would say +/- 20-40 if not a bit more. Which really leans me more towards a Lii-500 and waiting until opus or someone releases a new model that does a bit better job. So I think the answer for me is the best bang for the buck is the Lii-500 from alibaba if I can find an old laptop charger?

Side note, I have 4 Samsung 25R that came to me back before I had the opus and my xtar wouldn’t charge them (this is coincidentally when it died) and neither would my TR-01. I told the guys at illumnsupply to just ship me new batteries and I would send the old ones back because I needed them like yesterday but they wouldn’t do it even though I have been a customer for years, they didn’t want to believe they were bad and wanted me to send them in and wait for inspection blah blah blah, the opus is giving IR readings of like 4800 and 5000 for them (its too bad illumnsupply lost my business over that small $20ish transaction for a few cells) but this helped confirm they are definitely crap. Must have been meant for the D bin or recycle but got shipped out somehow. If stuck on a really cheap like single cell travel charger they will charge, kind of makes me concerned for anyone else who might have got them and not had a decent enough charger to detect they were bad and are using them…eck…or hopefully I got the only unlucky 4.

So…. how necessary is it to get a laptop charger for the Lii?

Bottom line for anyone that finds this thread for me I think the answer is the best bang for the buck is the Lii-500 from alibaba or gearbest. I am going to go ahead and place an order as soon as I find out if I need to order one with a power supply or if I can find that old laptop charger that was always in the way that I probably won’t be able to find now lol

I don’t understand. You have the Opus, it works, and does more than the Lii. It’ll cost you more to send the Opus back than the Lii costs most likely. Just use the Opus.

Were those Samsung 25R dead? Did you test that? You don’t say. Seems unlikely that Illumnsupply would send you dead cells. Some cheapo site, maybe. I have not measured IR on a dead cell but I would not be surprised if it was quite high.

IR is NOT simple or easy. If it was it would be on these chargers and be reliable. You are working with….very……small differences. Even the way the cell is put in, or it’s temperature, or charge state all affect IR. There is a way to measure it without a charger. HJK showed a way once. Too complicated for me to bother with. I’m OK with a decently rough estimate.

The Lii does NOT need a better power supply. The Opus could use one IF you are going to push it. Not so necessary if you are not. You CANNOT push the Lii as hard as the Opus so it does not need more power. Ability to charge and discharge batteries at higher amp levels, up to 2A charge x2, and 1A discharge x4, is one of the advantages of the Opus.

What you need is a 12v charger with minimum of 3A, and 5A would be better. Do not use a higher voltage laptop charger. Chargers should have an icon showing the polarity of the connection. Make sure yours match.

I would keep the opus I’ve had one for awhile. And have charged over 1000 cells on it easily by now. Usually it’s charging something day and night. It discharges at 1 amp not 500mah like the li500. Old cells can sag underload I’d rather have the highest load. To be more inline with flashlight use. My wife even uses the opus. Its all around a great charger and would not hesitate to purchase another.

Someone mentioned worry about pulse charging ga cells. I’ve put around 250 cycles on a set charged in the opus almost exclusively and its not again any differwbtm I did unofficial test awhile back over the last year. Keeping a handful of marked cells that go into the xstar or liito. Same amount of cycles as the others just a cc vs pwm. And when discharged tested at certain intervals and even at 250 cycles you couldn’t tell them apart. They are aging exactly the same.

Me too. I’ve had the Opus 2.2 for around two years now. I charge 6 LG HG2’s daily for vaping purposes. (3 at a time) After 1 year, these cells have over 300 cycles are rock solid, and so is the Opus charger. I charge AA’s, AAA’s, 18650’s, 350’s, 340’s, 14500’s, 26650’s, and some 4.35v cells. Button tops, Flat tops, protected. Have never had a single problem.

The Liitokaka Lii-500
seems to be going for an excellent price at the moment.

The opus is free to send back. So no big deal. I wouldn’t have bought it if it wasn’t (going from $10-20 charger to $40ish). The lii for $17 seems to do what I need it to do for less than half the price. I don’t doubt ill return to Opus, but maybe in a year or two when the tech is better and I don’t have to worry about having extra fans/lubing fans/etc.

Yes, the samsung cells are dead. If you charge one with a ‘dumb’ travel charger (its one ive had for forever, it will charge anything) they lose charge very quickly. I was shocked myself, I kinda hope illumnsupply gets to see this and realize they lost a customer who has spent, well, a lot there over a stupidly small transaction. There is seriously something wrong with them. But time and time again their IR test is through the roof(regardless of temp, etc) while my other cells test fine. Seems pretty indicative of a bad cell? (which I kinda knew through my years of using cells, but didn’t have a number to back it up).

Got myself a Lii on the way with the charger, thanks for the link Syndicate :slight_smile:

Me 3, the opus has been my go to charger for a good while now. Drilled the bottom for access to the 4.35v charge setting. This works providing the cell voltage is 4.1 or less(if close to 4.2v it won’t charge to 4.35v and instead terminates at 4.2v ). I tend to use bays 1+4 the most with vape cells 1.5a. 2a gets used for 26650 cells(1+4 bays). My fan was pretty noisy so simply swapped out for new and been quiet simce(6+ months). Not had any issue using the 4 bays 1a .

When I need more bays i just break out some of the other chargers

Have more but don’t tend to need them much at home. Work wise I have the vp2 and opus BT c100. The latter simply because I was happy with my other opus and wanted 4.35v support for 16650 cells I use in work. Also for a nice voltage display(my xstar sp1 does not have)For a single bay, the BT c100 has been excellent. I would have preferred a quicker way of selecting 4.35( have to insert cell, wait till charge stops flashing ,press hold mode for a few seconds then wait for the 3.7v to flash, release mode button and press to select 3.8v). Maybe 10s of waiting which is not ideal, but I have got use to it now. Shows the IR when cell inserted (around 100-110 on one 16650 cell). How accurate it is who knows, until my use time/voltage drops I will simply keep using the cell/s.

Might be tempted to try out an lii 500, seem very good value and make an excellent back up charger. It’s more flexible than my vp4 which limits 4 cells to 0.5a……too slow for me! Not to mention Nimh support!

Cheers :slight_smile:

i have one and like it —-$13

http://www.mtnelectronics.com/index.php?route=product/product&path=79&product_id=279

Yes… 100% agree. :+1:

The Opus is on its way back, I feel like I will order another one down the road, when their fans are better and IR readings are more reliable.

I found my old laptop charger but it has an output of

I am assuming that is way too much for the Lii? So I guess I should just order it with the charger it comes with? I have a bag load of AC to DC wall worts but im not sure if the plugs would fit and what not. Since I don’t really ever rapid charge, would the charger that comes with the Lii be okay? Honestly id say 99% of the time I choose 500ma if given the option, because it seems to give a healthier charge if that makes sense?

So should I just order the Li-500 from alibaba with whatever power supply it comes with? Or is ebay/amazon the cheaper or better route when going for one with the power supply (do you get different power supply if ordering from alibaba, ebay, or amazon?) (sorry, I lost track a bit, been sick so sorry if anything sounds off, still foggy headed. A link would be greatly appreciated atm because im in derp mode and need to get something on the way because im about to give away my last spare charger)

Gauss, they were Samsung 25R cells. The way that it died is that I plopped the batteries in for a charge not thinking anything of it, came back to notice they wren’t charging. Now it no longer recognizes any battery to charge. I will do a tear down and take pictures as soon as I get a chance. I mean that thing was rock solid for many years before it met those super high IR cells, maybe coincidence but seems odd considering the timing.

Yeah, 19V is to much for the Lii 500 or the OPUS. To date I have never had any issue with my Lii 500’s nor the power supplys that come with them.

Check out m4dm4x.com for some good codes at either Banggood or GearBest. M4dM4x will save you some money. :slight_smile: