EV-805 TENS EMS 4 Channel Rechargeable Combo Machine Unit - Muscle Stimulator + Back Pain Relief and Management- 24 Programs/Backlit (Including Electrodes Pads)

GET THIS!!! I've used tens machines before but this is the best one ever. I got this after spinal fusion surgery, to replace my old one that broke. It's perfect! I have no cons, only pros. IT IS VERY EASY TO USE! Just put the pads on according to the included chart, plug the cord in, and turn it on. Check with your Dr to make sure the settings you use are ok. I use it for pain relief and to help stop muscle spasms. I keep it on tens mode, program 1 all day. It really helps to reduce spasms frequency and intensity. My mom and I both have muscular dystrophy and injuries to our backs from car accidents. I just had surgery to fuse my lumbar spine. She can't do surgery due to other health issues, so I let her use this a few hours and she felt MUCH better. This comes with a bunch of pads, but you can use them over& over so these will last a really long time. The battery lasts forever. I use it a few hours daily, and it still keeps going for a good 2 weeks. When you do need a recharge, it goes fast. The case it comes with is ready to toss in my work bag. Cables are long, and is you do want something different they are easy to get at medical supply places or online. TIPS: Make sure you have no creams or lotions on the pads or skin placement site. Keep at least 1 inch between pads. DO NOT LET THEM TOUCH! That hurts, and it can short out the machine. When you remove the pads, don't just pull the cable. Hold the pad and the cable firmly and peel it off. The adhesive is strong so it can be tough if you don't have enough hand strength to cut a steak. Don't let the sticky pads touch each other. Follow the pad chart... You have to put the red and black parts in the right spots, not too close & not to far apart. Put the pads on, and THEN plug them in& turn on the machine. It hurts like hell to try to move them with the machine on. During use make sure the whole pad lies flat on your skin. When they lift part way they sting pretty bad. Most important of all, start out slowly and show it to your Dr and/or physical therapist. Both can show you how to set this up safely. The EMS part works differently, and you can actually pull a muscle if you do it for too strong or for longer than it tells you to. So be careful. You won't get all 'bulked and buff' by using it lying on the sofa all day. But it will strengthen you enough so doing walking or PT exercises don't hurt like crazy. You have to get up and move to get better. Good luck and if you get this I'm sure you'll be very happy!

I bought this unit to help with ongoing back tightness and it has worked better than I expected. The strength of the pulses is solid and the four channels make it easy to work on more than one area at a time. Whether it is lower back, shoulders, or the muscles around the spine it hits deep enough to loosen everything up. The controls are straightforward. You pick your mode, set your intensity, and you are good to go. No confusing menus or guesswork. The rechargeable battery lasts a long time which is great because I use it a few times a day when my back starts acting up. The pads stick well and the output feels consistent. Build quality is good. The unit feels sturdy and the screen is bright and easy to read. It is small enough to take anywhere but powerful enough that you never feel like you are wasting your time. If you deal with muscle stiffness or lingering back tension this is a great tool to have. It does exactly what it promises and provides real relief. I am glad I picked it up.

Love this! easy to use and helps those sore muscles.

Back on 2024.03.29 I purchased the iSTIM EV-805 TENS EMS unit as a logical upgrade to the TENS-7000 unit that I have had and used for years. As such, it is a useful unit having two additional output channels, a 2000mA/h rechargeable prismatic Li-Ion cell, EMS functions in addition to the usual TENS functions, and discrete step push button controls have replaced the old potentiometer controls of the earlier iteration of the device. A few friends have had their own units with them when visiting, and their reaction to comparing theirs against what I ended up using has always been favorable. I figure that people should use what they like and be happy with what they have, but several visitors have gone home and purchased this unit to replace their own shock boxes that look like iPods. Controls are intuitive and the display has enough contrast for my eyes. Normally, I prefer the newer black background, reflective characters LCD panels, because they are easier on my eyes, but have not had any problem reading the panel output during setting and use. Those two additional channels certainly speed things along, as opposed to shifting two channels from side to side. It is a keeper....after a couple of minor modifications: Firstly, anything that comes with an internal Li-Ion cell, comes with a cell capacity which is just enough to make the device functional for a token period of time. Nearly every manufacturer chintzes on internal power sources, and this device is no exception. Fortunately, there is more than enough internal space within the case to remove the 2000mA/h afterthought of a Li-Ion cell, and replace that with a 7200mA/h solution which yields acceptable use times, for around $4.90, and about 125 minutes of time spent massaging the case to fit the new power cells. Secondly, in today's retail market, I have trouble understanding why so many device manufacturers are still clinging to using legacy USB-Micro B connectors for charging purposes. Switching this device over to a USB-Type C connector for charging is a $1.25 line item ( in the retail market), carrying less than 10 minutes to make the switch, if you do it at the same time you switch out the power cell. Interestingly enough, the case does not need to be modified to accommodate the change in connector profile. The price difference between USB-Micro B and USB-Type C connectors being literally pennies on the manufacturing side makes the choice of USB-Micro B over USB-Type C for contemporary products ridiculous in the extreme. Lastly, I noticed that several customers mentioned missing character segments in the display of this particular model. While I had the device op[ened up, making minor adjustments, I happened to notice a significant number of screws missing. Since the missing screws were intended to hold the printed circuit board in close contact with the inside surface of the forward case half, it is likely that this could be the root cause of these display abnormalities. Having plenty of screws of the type that are necessary, I added them to the unit that I had on my desk. Upon completion of my fiddling around with the innards of the device, I powered it on, and noted that the display contrast was far better than it had been when I initially powered it on, so this tends to bolster my impression that this device, while good in intent, does suffer from unnecessary cost-cutting strategies implemented during manufacture. Hiring a competent and savvy plant rep would be a strategic move if market presence over time is desired on the part of those contracting for the production of these units. Despite tyhese minor foibles, the product is worth owning, and serves the intended purpose well.

I bought this in 2018 and I'm using it right now. I get a full week of use out of a single charge. In fact, I've never run the battery dead completely. I chose this model because it has 4 different channels, they are individually programmable, and I can change the frequency of the impulses and the width (meaning depth) of the penetration. The max timer is 60 minutes, or it can be set to continuous. I saw one review complaining that they "felt nothing at level 4," but this unit goes from zero all the way to 100. I bought it for pain relief. If the electrodes are brand-new, I definitely would not need to go over 20. I have never used power level 50, because that would be downright painful. I can't even imagine maxing it out to 100. I have no doubt 100, with an EMS setting, will contract the largest muscles. Yes, it is a bit more expensive, but I only want to buy one thing one time and I don't want to buy a lower-priced unit, then find out it's lower-priced for a reason. One fixed "pain relief mode" does not feel the same to everyone. You WILL have to read the manual, though, if you want to get the most out of it.

Unit works very well and lasts a long time per charge. Rechargeable battery is very convenient and it really helps for back pain. I also like the fact that the leads are a standard with replacements easily found on Amazon for under $10.00. Unit has an excellent build quality.

Update Feb 5, 2025 I had a very minor issue with the 805's belt clip screw. I called iStim to make sure I wouldn't void the warranty by opening the battery compartment to retrieve a small backing washer for the clip--I didn't need a replacement unit. iStim immediately responded to my email, and quickly sent me a brand new unit and kit. Not only is this the best and most powerful TENS I've used, but iStim's customer service is above and beyond. Thank you! ------------------------------------ Original review of the EV-805: I have herniated discs and spinal stenosis, so TENS units have turned out to be a godsend, despite the hassle of getting wired up every day, doing acrobatics to place the pads near my t-spine, and dealing with itchy skin and rashes. My old prescription TENS 3000 unit is good, but I needed something with 4 ports and more power/intensity. The 3000 is great because it’s tiny, completely analog, has a single 12v removable battery, and delivers a “decent” amount of power with new batteries. I tried wire doublers that run 8 pads on 2-channels, but they lowered intensity to 1/2 *when* they worked. I was searching for a 4-channel analog with at least 80 amH per channel. ChatGPT recommended the iStim EV-805. Size reference My biggest concern over the purchase was size. I couldn’t get a sense of reference from pictures. So in my pics here, I arranged the EV-805 alongside the TENS 3000, a scotch tape dispenser and computer mouse. Clearly, the 805 is significantly larger than the 3000, but it’s still portable. This is because the height and width are pretty spot on with my iPhone 13 Pro in its protective case (the regular sized iPhone, not the Max). The depth is just a fraction talled than two iPhones w/case stacked together. I think it’s probably too thick for most pants pockets, but it comes with a strong belt clip. The clip is good, but I’m always concerned that exiting a car or squatting down will knock the clip off my belt. I found a solution to this (below). Next concern was power. From what I gleaned in my research, the iStim EV-805 is the most powerful consumer TENS available. Pros -It puts out 100amH per channel against the 3000’s 80amH. While 100% intensity might be overkill for most people, I usually crank mine (intensity and settings like depth) to 100%. For moderate pain, I think people would typically max out at under 50%, depending on the settings. -Many different manual and interesting pre-programmed settings let you dial in the right therapy. 24 pre-set programs; 5 TENS modes, and 3 EMS modes. -Most of the settings I need are intuitive, so a manual isn’t necessary (provided that you have a basic familiarity with TENS settings and aren’t intimidated by simple technology). If you never used a TENS before, keep the intensity low and play around the settings. Definitely not rocket science. -The iStim electrodes are high quality pigtail types. I personally use both the pigtail and snap connectors. You can buy snap electrodes and wires on Amazon. The snaps have certain advantages… like a greater variety of available electrode sizes and shapes. -Low battery indicator that I can’t figure out how to read -Still “fairly” lightweight and portable. Using cases mentioned below, I fasten mine to a backpack strap while on my motorcycle. - Comes with two placement instruction cards that show optimal electrode configurations for TENS and EMS applications. - Exceptional battery life between charges. I run mine morning through night at 60-100% on all four channels, and haven’t needed a recharge yet. - A hinged safety cover prevents buttons from being accidentally pushed. -Big, easy-to-read digital display Cons: - My biggest “issue” is that after setting something, it continues to blink in settings mode and I can’t figure out how to stop the blinking. I tried all the buttons and depressed them for different lengths. There is nothing in the manual about this. - Sometimes the unit will become unresponsive to button inputs after a session ends. But this is an intentional feature that pauses between sessions. I override it by powering off and on. Honestly not a big deal as it takes 2 seconds, but I'd prefer a manual override. - While you can adjust intensity independently for each channel, you cannot independently program the modes like pulse rate, width, and timer. In other words, apart from intensity (power), the same mode or settings apply to all 4 channels. - My biggest complaint: the charging light isn’t color-blind friendly. The red and green are indistinguishable for me. - The instruction manual is “meh” when you want to learn how, for example, to exit the settings. - A unit at this price-point should come with a travel case. Travel cases are important because you’ll want to organize your accessories in one place. I experimented with various Amazon cases, so I recommend a few below. I highly recommend the EV-805. 5 stars. It's worth every penny. ================= Alternative to the belt clip: The 805 comes with a belt clip installed. If you are wearing clothes you can’t clip it to (like sweat pants, robes, PJs, underwear, etc), or don’t want extra weight on your belt line, buy a cheap binocular neck strap. I loop the ends around each side of the clip (there’s a hole in the center that makes it possible (see the picture). Then you can safely walk around without fear of dropping it. Especially useful if you have a desk job, since a little wire snag as you get up can send the unit crashing to the floor. Also good for driving. I got mine on Amazon: https://www.amazon.com/Pack-Adjustable-Shoulder-Strap-Replacement/dp/B09Z2C8FLY . Two for under 10 bucks. Sturdy and comfortable. Carry case: It took me hours to hunt down a carry case that wasn't too bulky, so this should help: Get this: https://www.amazon.com/Organizer-Universal-Electronic-Accessories-Carrying/dp/B0873ZK78F/ Perfect fit for the EV-805, along with all the gear you’ll need. Small and classy in the Starlight Edition color scheme. Wearable cases: I found two recommended cases for using the TENS while active. On good days I wear the iStim while riding my motorcycle so a wearable was imperative. Below are two of my favorites. Rest assured I’m not paid by anyone for my reviews, and I'm not given free stuff to test. Of the two wearable cases, this first one is a little bulkier, but protective and overall excellent: https://a.co/d/6NygNMf The second case is my favorite--a lightweight and low-profile, made of tactical military webbing. It’s a fully adjustable military radio pouch with an open design, so it makes the 805 quickly accessible: https://a.co/d/hn4Xbns. I can hold it upside down and shake it, and the iStim doesn’t move an inch. You can cinch it to be as tight as you’d like, and the pouch also looks cool. You can attach it to your belt either horizontally or upright. Both pouches have velcro wings that securely attach to backpack straps, and molle vertical straps for waist belts.

I didn't try the TENS part. But if you need to use this for EMS, don't waste your money. It comes with preset EMS programs. If you try to set your own numbers, it doesn't work. Took me a while to figure it out. Manual not helpful. I'll be returning this. It couldn't even contract my quads on 24 intensity level. My old one contracted my quads at intensity level of 4. Also I don't care that it has lithium ion battery which means after a while you have to throw out the whole unit. My old unit (different brand) uses 9v battery.