Excellent way to bring your old rechargeable AA and AAA batteries back to life.

The unit is very intuitive to use , once you understand what the various modes do, then operation is very straightforward. I use the unit to analyse various battery capacities, and track battery history as the batteries are used in equipment which is required to be highly reliable. The only negative is that it is a little large to travel with. This doesn't worry me as I only use them in a workshop environment.

Adds life to your old NiMH Batteries
Shows the available mAh of each battery so you can pair up the good batteries with the bad.

Well build product

Gave it to technophobe mum and made her happy with the instructions "put batteries in, come back in a few hours" and "you can leave the batteries in but you should probably take it out after a day or two". She was a bit scared of all the numbers on the display but if you can ignore that, works great!

Does all that it claims to do

After some week or two of use I found that No:1 channel seems to switch off after a long "break in" period before you can take a battery life reading and we have to do it again for some 2 days of testing. The other channels are perfect.

great charger, lcd screen doubles as a night lamp.
to find battery capacity you need to go through a cycle and it will show how much is available at the end. able to customize this gadget to perform specific things individually to each battery. I use and have a lot of rechargeable batteries and its an opportunity to see how the diff brands and capacity battery's perform.

LaCrosse charger will charge all my nimh batts, maha shows half of them as high impedance and won't charge, refresh or let me select any option to charge them. Use both AA and AAA nimh batts in both chargers. More of a problem with the AA nimh batts with the high impedance issue. Batteries with high impedance up to 12 months old, maybe 30 recharges each max.
Much bulkier than the la crosse unit.
The display is too bright in the night, needs to have an option of reducing display brightness. Almost as bright as the desk lamp.
Overall happy but not 5 stars.
Would recommend but with reservations as to age/manufacture (?) of batteries being used in the unit.

Revived all my dead Ni-MH batteries and found the really faulty ones. Run a "Break-In" several times to bring your old batteries back to life

Plug it in and go. Takes a moment to install AAA batteries until you realise it is simple not complicated.

The Maha MH-C9000 is a well designed battery charger which independently charges up to 4 batteries at a time. Each battery charged can be configured individually, selecting options such as charge, refresh, or break-in modes, and varying the rate of charge and discharge. When it's finished, it gives a summary of capacity, voltage and time taken to charge. I've used new Sony Eneloop XX batteries, and old Energizers. The Energizers would power my GPS for 6 hours when fully charged. After refresh mode in the Maha, they ran for 16 hours. It works wonders.
Great product.
Like many devices with a small screen, the display is a little cryptic, but comared to my Chinese travel charger, which has LEDs which allegedly change colour when charged, it is a dream. The Maha is a bit bulky for travelling with, so it's really for home base use. Really, the only improvements they could make to this would be in the display and user interface. That's not saying the current one isn't good enough, I'm just lazy.

Only just started using the C9000 but it's super easy to use.

For those who want the best, it is a choice between Maha Powerex and Ansmann.

I chose the Maha Powerex 9000 simply because it has more features than any other charger. When you charge a battery, it allows you to set the charging rate (a fast charge if you're in a hurry, or a slow charge which gives the battery more usable energy). The Maha Powerex 9000 can also refresh old batteries, a great feature which other chargers can't seem to do.

The model 9000 charger has 4 slots. I only wish it had 6 or more slots. Powerex does make other chargers with more slots, but the other chargers don't have all the features of the 9000. So I decided to buy the 9000 to get those features. I guess I could always buy two, or buy an 8-slot charger in addition to the 9000.

Best batteries: I like the batteries from Powerex, Ansmann, Vapex and the new Eneloop-X (a high-powered Eneloop). I avoid the supermarket brands Energizer and Duracell for rechargeables (I don't think they are as good, as maybe they want people to keep buying disposable batteries).

To sum up, the Maha Powerex 9000 is the best charger out there, and the one that can put the most energy into a battery (important if you need the best charge you can get).

Very fast charging

Perfect for my photographic needs !!

Use it to charge some eneloop that I use for my gadgets around the house.

First really intelligent charger since other chargers could not tell you battery condition. Established that from running breakin and/or refresh & analyze mode that a lot of AA batteries some less than 3 months old did not hold much charge and were best discarded since could not be restored. Also could pick out batteries with similar performance (important since 4 number AA batteries required in external camera flash).

Excellent product for testing the quality of rechargeable batteries. Lets you know how diminished the batteries are. Great for cycling and restoring batteries.

Excellent clear and informative display, ability to charge different cells simultaneously in any numbers, no overheating.

Intructions need more details

I bought this charger to take it with me on holiday. Its a little bulky but does an excellent job. I highly recommend this product if you are after an analiser, quick charger etc.
Its a pity the display are not dimmable... nothing else to complain about..:)

Excellent quality unit. Very accurate battery analysis means you know exactly how every battery will perform and how to best combine them. Great for old battery reconditioning or knowing when a battery's time is up. Allows you to check the charging performance of other chargers or appliances to see if they really do fully charge your batteries. You can also check remaining capacity of batteries when your devices say they are empty so you know how much capacity is usable by that device.

While custom charging modes are this unit's specialty, it's default charging mode is not configurable. It is fixed at 1000mA, which is a good quick charge for AA batteries, but too high for most AAA batteries (in my opinion). So you will probably want to manually set charge rate for each AAA battery or low capacity AA.

The bright white display backlight remains on whenever a battery is in the device. It is bright enough to light up a room like a nightlight, so may be annoying in a bedroom. Auto dimming would be nice.

Standard 12 volt supply means easy portability and use while camping or travelling. Unit is tough enough for it too. It is a bit chunky however, so I will continue to take the old DSE charger camping.

I find it useful for charging 3 batteries compared to most chargers needing pairs of batteries.

Good quality product

outstanding quality.

I became interested in getting a charger as my collection of lights grew, and after many hours of research, it became pretty clear that for AA and AAA batteries, this is simply the best. It doesn't just charge, it lets your discharge, break-in, analyse, cycle, repair- everything. Candlepowerforums use this as the benchmark for battery chargers, and now that I own it I can see why. For the basic stuff, even a non-techie like me can get things going without difficulty, but the capabilities are there for down the track. This is a charger that, simply put, I will never have to upgrade, because there is no upgrade better. Pricey - yes, but if you expand your timeline to 5 years, and think of all the batteries you'd buy in that time... it's saving you money. Not to mention the planet :)

Charge AA/AAA