XTARVX4 Visible Mixer 1.5V/3.6V/3.7V Li-Ion 3.2V LiFePO4 1.2V Ni-MH Batteries Charger and Battery Capacity Tester

The media could not be loaded. I have a large supply of Ni-Mh batteries in AA and AAA, but have been moving to lithium, which has higher capacity & performance. Lithium holds onto 1.5V levels until they are nearly depleted. In contrast, Alkaline and Ni-MH continually lose voltage throughout their lifetimes. Also, Ni-Mh start under 1.5V, so as they drain, they may not be suitable for all electronics. I was going through so many of them in my remote controls for my A/V stuff. I got some AA Lithium 1.5V cells and needed a charger that could do it all and future-proof me for other types of cells.This charger does Li-ion, LiFePO4, Ni-Mh, AA, AAA 1.5V lithiums, and other cells like 18650s (plus several others). I like that it is so versatile and that it has a very informative display screen, unlike some other chargers. I personally like to know what is going on when I'm charging my cells, especially when it comes to lithium batteries.The XTAR VX4 is a good value and has worked well for me so far. I included a short demonstration video with my review, showing it auto-sensing my rechargeable AA 1.5V Li-Ion cell and charging it. So easy to use.

I had a Nitecore i4 for some years and it died. Took it apart and two 220 uf capacitors were blown up inside.This charger looks well built and has a battery capacity feature. Has a nice carry bag and will fit many varieties of batteries. Nice that this included the USB charger.Only complaint would be it doesn’t have a 12vdc adaptor for traveling in car / camp outs/ etc. like the Nitecore does. May replace caps on the old Nitecore for a travel unit.

I use this every day. It works just fine. It will charge my li-on cells at 3 amps for a single cell, 2 amps each for 2 cells, or 1 amp each for 3 or 4 cells at a time

Once again XTAR knocked it out off the park with this new VX4! My VP4 Dragon Plus was my go to but now doing 1.5 Lithium AA, AAA, C and D this one is fantastic. It can, at the same time have:a 21700, protected 18650, 1.5v Li-ion AA and NIMH. Charge or “grade” (which is C-D-C cycle) by pressing MODE promptly upon plugging it in. Another impressive function is the automatic setting of Amperage, but you can manually set ALL channels to do 250mA, 500mA, 1A or 2A. This is achieved by pressing the mWh/mAh button upon start up. Note ALL 4 channels will operate at that amperage regardless of chemistry or voltage.(Note if you are using a weak nimh or Li-ion AA or AAA it might limit you below 500mA or 1A depending on the cells iR. I have yet to be annoyed by this, I’ve agreed with it every time so far.It can do LiFePo4 BUT ALL CHANNELS will be LiFePo4 and forced despite sensors. FYI. This is achieved by holding the C/V button upon start up. This is the only setting I’ve seen that isn’t foolproof and could be slightly dangerous if you didn’t know what you were doing and did exactly the wrong thing. lol.Summary. The value for your money is undeniable , this has a fast charging speed at 2A on all channels (if supplied USBC PD with enough wattage and voltage) all while residing in a sleek, small and portable unit that needs nothing but a USB cord.I bought 10. Lol.Reminder. You will be unplugging it between tests to reset modes and amperage, take photos when completed because there's no memory and when bumped hard or a cell is removed, you won't see that test result again.There is no USB Out, no 9V, while there is interal resistance measurement it is not displayed(not that those should ever be trusted on a charger) and while you can change modes with out unplugging the test amperage will be automatically decided and not displayed unless unplugged and set.I wouldn't expect these features on any machine under $100 but just wanted to let you know.10/10 rating from me and that's rare. Also the BC4 gets a 9/10 but oddly not the one in the kit with batteries(that BC4 5/10 and xtar cells 10/10 and I've tested hundreds). The version with USB C and USB A in the photo: 9/10. - at LeviMThomas fb insta

If your main purpose is to test 1.5v lithium (AA/AAA) - this is the tool.Pros: Test 1.5 volt lithium – unique feature as most do not offer this and at a low price – yet. Opus is NOT 1.5 volt charge but can discharge at CC ((I do not have any Opus items).Cons: limited functions – no ohms, length of discharge, or discharge onlyOther reviews (Levi Thomas – not affiliated) I would agree with so no need for me to add such detail. While I do have several testers it is far less than 100 so… I also compared this with my Atorch (.2 - .3 mA CC with v cutoff at 1.1v) and results are similar for mAh output.I have been working this device out testing multiple batteries to get accurate capacity (mAh) – just a reminder mWh = mAh * V so even with 1.5v lithium being advertised mainly with mWh you can still use the calculation to what you are looking for.It seems that the context of battery ratings differ (at least between me and the mfg). If you offer a 1300 mWh batteyr then the mAh rating should be around 867. Often, in my experience, it is much lower than above; so this can help me ID the ones that are properly represented where before it was just an Atorch or similar single testing options Already tested several brands so you can see them.Complaints- Final thoughts: Biggest to me is discharge testing. It will fully charge then discharge (then charge again) for the test cycle. XSTAR is big enough they should have added more options:• Just a discharge option – no charge cycle first – why? So you can test capacity loss over inactive time - shelf life• Resistance test – list ohms• Set discharge rate (or list what it is – you can set charge mode but unsure it is the same) - rate is 250-300mohm• Set cutoff voltage• Duration of discharge• Add 9 volt option