Powerex MH-C490F-DCW Worldwide 9-Volt Battery Charger with Car Adapter

I use this 9 volt charger and a Maha AA/AAA charger (model C204GT-DC) on a regular basis and I am definitely impressed with the performance and quality of both. I needed chargers that could run on 12 volts because I have a 12 volt RV solar electric system I plug them into. These have worked out great, and since Maha (intelligently) used the same power plugs on both units I only need to store one set of AC and DC plug adapters in the camper (where space is a big factor). The only real draw back is that this charger sometimes makes a faint high pitched squeal while charging the batteries. It's not too annoying to me, but I imagine that someone with (younger) more sensitive hearing might be bothered by it.

I've ordered these "twice over a two year period.I use them for my electric acoustic guitar "preamp".. they work well.When new they give about 1 hour 20 minutes of life so have a spare nearby.After about 6 months you will most likely have at least one start to get weak and only last 1 hour, then even less over time.I do leave them on the charger 24/7 when not in use, otherwise they would be of no use when I showed up to play as the shelf life of NiMh stinks when not on a charger.... I read somewhere they lose 2 - 5% a day... sounds about right....Until someone produces a lithium equivalent, these are the best rechargables to give full voltage.I also had one charger go out "I had two"... right where the power supply hooked up you could see a melted spot where it got very hot inside...expect something fried.

the charger is okay but the batteries don't work but a few months. would not buy again

I bought two of these chargers probably 3 years ago, and shortly after bought a total of (8) 9.6V batteries - 4 for me and 4 for my church. All was well for about 2 months at the church (where they were used the most), but then a couple suddenly would not accept a charge, with a blinking red LED on the charger. Then shortly after the other two accepted no charge. I initially blamed the quality of the batteries for the problem. But I did notice that if I charged a battery fully, used it for maybe only five minutes and put it back on the charger, the red LED would blink. In those cases, I would leave the battery off the charger until ready for heavier use, use it before the mic it was in showed a red light (meaning the battery was almost dead), and put it in the charger for recharge. Eventually that plan went down the trash and eeven after what I thought was normal use the charger would show a blinking red and the batteries were useless. Same thing if I over used a battery in a mic after the mic showed that the battery was about dead: if I put it on the charger then, red LED would blink, and no charge would be accepted. All of this eventually happened with the batteries I bought for myself, so I basically have 8 worthless batteries because the charger cant charge them. The chargers sat and I bought another NiMH battery from a different brand. Maybe 3 months after I purchased it, same thing - the charger would not charge it after it was overly discharged or if put back on the charger after short usage. I put that battery (and a few of the others)on a battery tester and it showed probably 60% full for a couple - although I got a red light on the mic when I put those same batteries in. A couple other batteries showed up as completely dead on the tester. So it appears that the charger has a hard time recharging batteries that have not experienced a perfect full charge/optimal discharge cycle, and/or that 9V NiMH batteries are very sensitive to this cycle. But apparently (according to its description) the larger Maha 10-bay charger is capable of rejuvenating "dead" batteries. I will finally look into this as I have not found another 9V charger from any other company that appears capable of bringing my 9 dead 9V's back to life. So, this charger is great in theory but based on my personal experience, beware if you find you use your 9V batteries erratically.

Its VERY expensive but totally worth it.Charges my 9.6v battery fully without overcharging it and detects full charge properly and not just by detecting current dropping or by a reached set voltage.The other ones ive tried just dont work and dont charge it up to full. they simply detect a voltage level or have a timer and they dont work at all with 9.6v brand NIMH 9v's like this charger does!It seems to work great. No issuesif you put your ear up to it in a quiet room you can hear it make a quiet buzzing but its not very loud so its fine.

Powered by either 100-240 vac mains or 12 vdc "car charger: That means to me, 12 vdc only, not 12-24 vdc as in some military vehicles and big trucks. 4 stars because no 24 vdc specified or capable. Some military almost live in their vehicles for days on end. Truckers with sleeper cabs spend even more time in their tractors.

Well, the title says it all. You get only the charger. No batteries. My only excuse is that several other vendors are using the same picture and they are actually selling the charger along with three batteries.

This charger works "fantastically" (is there even such a word? I purchased Sunlabz batteries AA, AAA and 9 volt and to my surprise Sunlabz make rechargable 9 volt batteris but NOT the charger for them. They ONLY make chargers for AA and AAA batteries.Anyway, This MAHA 9 volt charger charges batteries fast and I mean fast About two hours and done!!!!I have had this for a few months now and works fantastic I highly recommend this product. The sunlabz 9 volt batteries work well with it also