Hyperion Eos720I Net 3 Ac/Dc Balance Charger 7S 16N Store Mode

Despite having to read a bit through the manual, this is my first foray into the world of LiPo batteries and this charger has made it a piece of cake to get them ready. It took a few minutes to get used to navigating the menus but once you have it, it works great. The only issue I had was that the leads it comes with didn't connect to the batteries I bought so I had to spring for an adapter. It was only a few more bucks but for the price, I would hope they could include something like that for common connector types. I also love having the memory so I can easily swap between different battery types.

I read several reviews about this Hyperion Eos720I Net 3 charger. I fancied the fact that it included STORAGE mode for my LIPO batteries. It was also not lost on me that on several forums about RC, seasoned users named Hyperion chargers as no nonsense, reliable top quality hardware.Today, about 9 months after I purchased this charger, and probably less than 20 charging cycles on it, It just turned off on me.Right now, when I plug it back into the wall it may or may not turn on, start the power up procedure, but then it powers off again. Sometimes it will write on the LCD screen the Welcome text, or even sound the welcome beeps. But then it just powers off again.I do not live in USA, so I don't care that much on it's warranty. I opened it up. Inside I found simply enough, a "by the book" design, including a general purpose, user programmable CPU from Microchips brand. The rest of the design seems to be pretty much modular electronics, cleverly bunched up, but more like in a hobbist project. Not necessarily "top notch engineering" work.Not a really custom "engineered" charger per se. This may not imply poor design per se, I know. Anyway, bottom line, it is not working. I left it charging, and when checked up on it some 10 minutes later, it was powered off. Now it doesn't work. I am pretty much disappointed by this charger.UPDATE: I've been dedicating it some more time, and it is the PSU side. The charging circuit is reasonably designed. The PSU, on the other side, is quite messy. It seems a "chinese" modular PSU or regular to low quality. It is designed to deliver 13.8 volts at 7 amps. You can see lots of resistors, condensers and bridges, hastily soldered as an "afterthought" below the PSU, on the circuit - solder side. I am about to resolder everything, in the event that there is a "cold" soldering out there. Definitely not machine - industrially soldered: Big blobs of soldering, very "chinese cheap hands" like.

Update ... Aug 2017After 3.5 years, I still like this charger a lot. It handles everything I have, from my nano cpx to my Trex 450 dfc. After the initial pain of updating the firmware, I haven't messed with it since. Bottom line, it charges batteries well, never had a problem. The charger is smart enough to detect if a connection is wrong, or if you have the wrong number of cells specified (don't ask). I never use the USB connection anymore, though you can diagnose a bad battery with it if needed. I converted an old PC power supply for more current, now I can parallel charge up to 15A. The built in supply will parallel charge Trex 250 or 180cfx batteries with ease. With that versatility, I'm always changing the battery size and charge current settings in my various profiles - it is easy and quick. That means you only need a few basic profiles, mostly based on the number of cells.Complaints? I wish the 12v wire on the left side removed via a connector. I also wish I could name my charging profiles without connecting the charger to my computer.But if you can live with that, you get a great charger. If you want something better, you need to pony up more $$$ for an icharger.Original review (Feb 2014)This charger is everything it was advertised as. It replaces my CoptorX b601, which I never fully trusted after a battery got overcharged. This one has about every option you could want, including an alarm for when battery reaches a any level of charge you tell it, and either stop or continue.The instructions were written in actual English instead of the usual Chinglish. I skimmed through them and started programming by pushing buttons. Programming is reasonably intuitive.The computer software is the easiest way to set this thing up and gives nice graphs to show charge progress. You don't need the computer interface, and this is still an excellent charger without it.My only complaint is that no CD was included with the charger that would at least support the shipped version of firmware. I had to download the software, then a USB driver was missing. Had to go through help menus and numerous browser links ending on another website to finally get the right driver. Hyperion should have done a better job of packaging this. This isn't a reason to not get this charger, but it does justify a 1 star downgrade

I am new to Lipo batteries and chargers so I have no real experience. The instructions are limited, no pictures telling you what the various connections are for. I went online and viewed a variety of U-tube videos to get a better understanding of the principal behind this technology.The instructions that come with this item are detailed in some respects, but they don't tie things together or even give a brief summary of even the basic workings. I was going to send it back, but decided I could make it work so I am keeping. Later found out that there is a 15% restocking fee plus shipping costs both ways. Buy local or if online, not from this vendor.