Powerex MH-C204W 1-Hr Worldwide Charger w/8 2700mAh AA batteries Review

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(More customer reviews)I bought the Maha MH-C204W charger when I bought my Canon A95 digital camera in March 2005.I looked online for quite a while before deciding on the Maha model, based, I confess, on great reviews.Of course, we all read reviews, so that's what I did.However, I had trouble with the charger soon after I got it.It wouldn't charge the batteries.I thought the top contacts on the charger were not properly contacting the batteries.In the end, after emailing Maha, they told me to send it back for a replacement.The 2nd one has been working perfectly fine for 16 months. I'm not afraid to tell anyone who reads my review that I had trouble with my first one because stuff happens, as we all know.However, I'd like to again mention that my 2nd one has worked wonderfully right out of the box ever since.

One reviewer said his discharge cycle didn't work on Bank B because of the unit's heat sensing circuitry being located under Bank B, thus shutting down Bank B before the two batteries there can charge.I've done the discharging a few times and can say that it's been fine so far.It is interesting, however, that this shutdown problem can occur, meaning that Maha should redesign this model to prevent that potential problem. Now back to better comments.

I like the fact that this charger can accomodate voltage levels from 100V to 240V, as well as 50Hz or 60Hz.You can go anywhere in the world with this model.All this without the big brick at the end of your plug-in cord.You can also detach the cord from the charger and wrap it around the charger to give yourself a very compact little package.A good idea I've found is to attach a good rubber band at the prong end of the cord, so when you're done wrapping the cord around the charger body, you can keep the cord from unravelling by simply wrapping the rubber band around the wound cord.This produces a very compact and lightweight package that neatly fits into my small carry-on bag, or my suitcase, whatever.

The Maha model has four charging stages:startup, rapid, top-off, and maintenance. In the end, your batteries will be 98% fully charged.Awesome.The MH-C204W also has an integrated battery conditioner to rescue old and degraded NiMH batteries by applying high current pulses.

Well, there are lots of chargers out there, and I'm not going to say that this model is the only great one.If you want the Lacrosse BC-900, that's okay, too, because it is a great charger with individual digital readouts for each cell. I had to choose one to go with, so I those the Maha MH-C204W and can honestly say I'm very happy with it.Good luck in choosing your personal charger.

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Product Description:
Finally a charger that fits in a digital camera bag! No more carrying around a large, heavy charger with a huge power adapter that is bigger than most digital cameras! Redesigned from the ground up, the MH-C204W offers the convenience of a faster charging time and the conditioning feature that lets you revive your old batteries. The MH-C204W is a lightweight charger with an universal power supply built into it.

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Powerex WizardOne AA/AAA NiMH Charger-Analyzer w/4 2700 Batt Review

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(More customer reviews)The reason for this purchase was extreme frustration with two Duracell 15-minute chargers and a crudload of 2650 batteries I got to power four Canon Speedlite flashes. I couldn't get 10 minutes out of them before the flash recycling times made them unusable!
I bought the smart charger based on other reviews here so I'm just going to provide a few observations:
1. Excellent appearance - looks professional and well-made.
2. Read the instruction sheet carefully - there are multiple charge modes used at different times.
3. When the battery is inserted the charger prompts you for the charge mode, etc. Very easy to set up.
4. Every battery that hasn't been on this charger should go thru the Break-In mode - it takes almost two full days but the results are worth it. I just spent six hours at a local event using a lot of flash photography and didn't have to change out the batteries at all!
5. A regular charge can be done in about one hour.
6. They recommend "matching" the batteries based on their capacity (shown when charging is done) - I'm using a spreadsheet to track that and have put labels on each battery showing the battery number, capacity, and group it belongs to. Overkill perhaps but it's paid off so far.
7. Once you've used it a few times it becomes a lot easier.
8. The Duracell 15-minute chargers have been tossed - I'm not so sure that such a short charging time is good for batteries anyway.
9. I've already purchased another MH-C9000 as a backup and to charge more batteries in the same amount of time.
This is the first review I've ever posted - I see a lot of these and wonder if they were written by someone at the company that makes the product. I'm just a regular guy who is excited over finding something that solved a major problem in a big way.

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Product Description:
MH-C9000 WizardOne Battery Charger & Analyzer is suitable for the casual consumer users, enthusiast and professionals, WizardOne is capable of charging, conditioning, analyzing, cycling, forming and discharging one to four AA or AAA batteries, all while digitally displaying the battery capacity and voltage. All four slots can be operated independently in different modes and settings. Those seeing the unit for the first time will be struck by its large LCD screen, backlit by ultra-bright white LEDs. Measuring over 3.5 by 1.5, the display is more than three times larger than its closest competition and shows a wealth of information that is easy to read. In addition to the standard charging, conditioning and discharging, the WizardOne charger-analyzer also offers two unusual operations modes. The Break-In mode allows the user to input the capacity of the battery and performs a forming charge designed to properly break-in new batteries. The Cycle mode allows user to charge and discharge batteries consecutively while storing the capacity for up to 15 cycles. There are ten selectable charging and discharging current from 0.2A to 2.0A and 0.1A to 1.0A respectively. The charger also features four independent temperature sensors using Mahas latest temperature rise detection algorithm in addition to the usual peak temperature detection. It also armed with additional patented termination algorithms found in other Maha chargers. The unit can be operated in a basic and advanced mode. In the basic mode, user merely needs to insert the batteries with no further key press. The charger will select the appropriate settings automatically, making it suitable for the casual users. Charger kit includes the MH-C9000 battery charger plus four high-power true 2700mAh PowerEx rechargeable AA batteries & battery case.

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Powerex MH-C800S Eight Cell Smart Charger Review

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(More customer reviews)I also own the LaCrosse BC-900 charger, and am glad that I own both; each has its own benefits.

Either charger is very good because:
- They charge each cell individually, rather than in pairs, resulting in the best possible charge for each one.
- They offer different charging rates, so as often as you are able, you can slow-charge the batteries to ensure they last longer, but you can still quick-charge when you must.

The PowerEx charger is better in that:
- It handles eight cells, not just four.
- A major advantage they didn't advertise, as far as I saw: it pulse-charges the batteries.Pulse-charging noticeably improves each battery's total charge capacity, in both mAh and voltage... even when you switch to another charger later on, the battery is the better for having been pulse-charged.LaCrosse doesn't do this.

The PowerEx misses on these fronts:
- It false-peaks a little more often than does the LaCrosse.This is where an actual voltagte reading would come in handy, because you could easily spot the false peak, and charge the battery again.
- It doesn't offer charge rates below 500mA; you have only this or 1A.I like the 200mA setting the LaCrosse offers.
- If a cell is deeply discharged (below .9V?), the PowerEx won't attempt to charge it.LaCrosse suffers the same problem.In such case, though, I pull the cell out and use a couple of paper clips and a charged cell... kinda like jump-starting a car... for 20 seconds, and then try putting the battery back on the charger.

Overall, I'm glad I bought this charger.

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Product Description:
The MH-C800S features eight independent slots that can charge one to eight AA or AAA batteries in any combination around one to two hours - it's like having eight chargers! The unit also incorporates a large LCD screen featuring the charging status of each battery. This new charger uses the same precision microprocessor as its professional sister model MH-C801D. The user can choose between a soft and a fast charge mode. The soft charge delivers the highest battery life and allows 100% compatibility with older, lower capacity batteries. The fast charge allows eight batteries to be fully charged to their maximum capacity in as little as one to two hours.The Eight Cell charger is embedded with a high-rate battery conditioner that will charge, deep-discharge and recharge batteries automatically for maximum performance. The cycle restores the batteries to their optimal performance level minimizing the memory effect. Batteries that were previously thought ready for the recycle bin can be brought back to life. The MH-C800S can be used anywhere around the world using the included switching AC power supply, perfect for home, office and travel.

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