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

by Maha
4.5 out of 5 stars 41 customer reviews
| 5 answered questions

List Price: $39.95
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  • Maha PowerEx MH-C490F Stealth Two Hour Compact 4 Bank 9-Volt Charger - US Style 100V-240V Power Adapter - DC 12V Adapter - User Manual - Maha PowerEx Warranty
  • Compact: Size of the charger is only 2.5" X 3". No more worrying about where to put your charger, the MH-C490F charger is so compact that you can basically put it anywhere
  • Fast Recharging Time: Unlike old 9 V battery chargers, the MH-C490F charger can charge 1 to 4 8.4 V and 9.6 V batteries within 2 hours. No more waiting overnight to have the batteries fully charged. Perfect for instant power on the go
  • Car Capability: On the go power. MH-C490F has the patented automatic step-up device that is capable of charging 9.6 V batteries at its full capability. 9.6 V NiMH batteries need a minimum of 15 V input to charge the batteries to its full potential
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$38.31 & FREE Shipping. Details Only 19 left in stock. Sold by DC Workshop - DL LLC and Fulfilled by Amazon. Gift-wrap available.

Frequently Bought Together

  • Maha PowerEx MH-C490F-DCW Worldwide 9-Volt Battery Charger with Car Adapter
  • +
  • TWO Pack Maha PowerEx MHR9VI IMEDION "Ready When You Are" 9 Volt Size Low-Self-Discharge NimH Rechargeable Battery [9.6 Volts, 230 mAh]
Total price: $63.80
Buy the selected items together

Product Description

The MH-C490F charger has the Delta-V based microprocessor, which allows the 9 V batteries to be charged to their full potential. The microprocessor automatically switches from rapid charge to trickle charge after the batteries are finished charging, so that the batteries will maintain their full capacity.

Product Details

  • Product Dimensions: 1.9 x 1 x 0.7 inches
  • Shipping Weight: 9.6 ounces (View shipping rates and policies)
  • ASIN: B0002WKD80
  • Item model number: MH-C490F-DCW
  • Average Customer Review: 4.5 out of 5 stars  See all reviews (41 customer reviews)
  • Amazon Best Sellers Rank:
  • Product Warranty: For warranty information about this product, please click here
  • Date first available at Amazon.com: October 2, 2001

Customer Reviews

Top Customer Reviews

It's really the only charger I've found that is capable of charging 9 Volt batteries to their full potential - most 9 V chargers are timer based and/or treat 9 V cells as an afterthought. This charger does 9.6 V batteries with ease (as well as 7.2 and 8.4 V types) and can easily charge 4 at a time quickly.
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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.Read more ›
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This little dude(MAHA-C490F) gives a quick and complete charge on my 9V high capacity batteries. It has a rated 70-90mA output for each battery slot. It did not overheat although it is small and light weight. Requires 12 VDC, 1000mA input, so it might be too draining on a cigarette car adapter setup (not included)for more than 1 battery. Made in Taiwan - which is a lot of steps up from the junk we get from China.
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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.
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I use lots of 9v powered devices: guitar pickups, effects pedals, tuners, mics, etc. And 9v alkaline batteries are expensive and hard to find locally. Hence my purchase of the Maha PowerEx MH-C490F and a fist full of Energizer Rechargeable 9 volt Battery, (NH22NBP). Not sure why I waited so long but this charger and the NiMH 9v batteries work great with my gear, lasting longer than the deposable Durcells I was using.

My main concern was getting high enough voltage output for my Takamine guitar pickups. The rechargeable 9v I tried a couple years back only supplied 7.2v and lasted less than an hour in my guitar. The Maha PowerEx MH-C490F charged my Energizer all the way to 9.6v and my guitar is good for weeks of daily use. The Maha charges quickly, typically a couple hours, and is smart enough to control and curtail power to avoid overheating and overcharging. The charger bays are independent, meaning you can charge different voltage rated 9v batteries at the same time, e.g., 7.2, 8.4 and 9.6 volt.

Unlike my NiMH AA, 9v NiMH don't like being topped off before a gig. You need to run them down otherwise you get the blinking red light--meaning bad battery--so I need to keep an emergency alkaline just in case. Really wish this charger had a discharge/condition cycle like Maha AA chargers. The manual has no comment on these issues but I found additional information on the Maha website:

Rescuing "bad batteries" indicated by a blinking red light: "Occasionally, the charger might show blinking red right to indicate bad batteries. There are several ways to restore batteries that cannot be charged by the charger.
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After buying a new and much more sophisticated Multi Modality TENS device I was shocked to find it only gets 2 to 2 1/2 hours of use instead of DAYS my old units got. But then I was also surprised to discover the new unit actually offers a measure of pain relief for a change. So with this sort of battery burn I had to bite the bullet and ordered two of the Powerex MHR84V Powerex 8.4V 300mAh 1-Pack Rechargeable Battery along with this charger direct form Thomas Distributing to test. Sure enough, just as Thomas Distributing told me, I am getting a bit OVER double the battery life with these batteries. And this charger is SO much nicer than my old Lenmar Charger! Just as promised this shows red until charged then switches to green and goes to a maintenance trickle charge unlike my old one that just LOVES to see the look on my face when I walk up to check my batteries to find them exploded....NO more thank God.

So now that I know this does exactly as promised and as fast as promised I will order 2 more of the batteries I mention above. This charger included a char charging cord to connect to any 12 volt port so I will never run out. I waited to order all four batteries because to be honest, I just didn't "trust" that this would actually do what was promised. But then I should have remembered that this was Thomas Distributing who just found my 10 year old receipt and did a 100% FREE warranty claim for me on an old dead Maha AA/AAA charger. As I use this daily now and really make it earn it's keep I will revisit this review. IF it holds up I will up this to 5 stars. I just quit doing that at first blush when you get a new product and are in that honeymoon phase to find out a month later it is a melted heap on your kitchen counter.
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