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Question: Can I fully discharge NiMH AA batteries in a pen ligth so they are equally discharged to recharge again in the DPS 3000?
Document: After a couple bad experiences with DigiPower and their battery chargers they sent me the DPS-3000+ as a replacement for my older DPS-1000 unit. This item came with four (4) 2300 mAh AA NiMH  batteries. A nice break from their older chargers this one comes with an adapter and a nice long power cable so you no longer need to find a free wall outlet to completely cover with your charger. The unit will charge either AA or AAA batteries and either two (2) or four (4) at a time.
DigiPower DPS-3000+ 3-Hour AA/AAA Rechargeable Battery Kit with 4 AA 2700 mAh Batteries and Car ChargerI have found this unit to be fast, reliable; and easy to use. It takes up a minimal amount of space. It has made recharging a breeze.
I use the DigiPower charger and DigiPower AA batteries to power my Nikon strobes, both primary and slave unitsDigiPower DPS-3000+ 3-Hour AA/AAA Rechargeable Battery Kit with 4 AA 2700 mAh Batteries and Car Charger. Slaves typically have to remain on constantly for long periods of time and the power drain on them is high. My DigiPower chargers and batteries perform without a hitch and bring everything back to full charge in short order, usually less than a hour.
I like this product.I bought the DigiPower DPS-3000+ back in early 2005 when my kids bought me a Canon A95 point and shoot camera. The A95 eats AA, 4 at a time. I have 7 sets of 4 each to feed the A95 and the mess of things I have that love my 20+ AA and a dozen or so of AAA rechargeables. The DPS-3000 worked the first time and every time I have asked it. I have had some batteries die during this time, but the DPS-3000 made finding the bad one easily by the behavior of the LEDs.
The bigger the number, the more power the battery can deliver. ]This brings me to the answer of one of the big questions I had when I bought this DPS-3000:  Can you use batteries other than the included ones?? YES! As I have noted, several brands, several ratings can be used with this charger. Now, I think you must always use batteries of the same brand and rating together at all the time. You have seen a thousand warnings about keeping alkaline batteries together. The first thing I do when i buy some batteries is label them with a letter for the set, and then number each of the batteries.
The DPS-3000 Rechargeable battery kit is a good match for the Canon A640 camera.
Sorry, these comments are for the DPS 9000....Even though the manufacture info does not list my HP photosmart 425, I took a chance. Works perfectly, and have not had to recharge once after 3 weeks. Only relatively small drawback is that with it attached, my camera will not fit properly into its case.
These were one of those items on the side of the page that caught my eye. The 4 AAs are 2700 milli-amp-hours (mah) which is the highest capacity I've seen. Duracell NiMH in AA are 1800 mah, for comparison. The charger is quite nice as well, with a 2 or 4 battery selector switch, a wall charger, and a mobile adapter for your car. I'd say either the batteries or the charger are both worth the price, so I bought 4 of them for my model helicopters.
It can only charge 2 or 4 batteries at a time. This suggests that it is not capable of providing each battery with the amount of charge required for the battery, but that it groups the batteries and charges until the average charge level of the group reaches a certain level. This may mean that some of the batteries aren't fully charged and other batteries are overcharged, resulting in shorter life. If it could charge any number of batteries individually (like my other AA battery charger), I would have given it 5 stars.
I purchased this 2 weeks ago. It does not work. I put the batteries in the charger. The red "charging" light came on for about 15 minutes, then it went off. The green "fully charged" light never came on. I installed the batteries in my digital camera (my camera takes 2 of the AA). I took 4 pictures and the battery low indicator came on. I tried the batteries in my friend's digital camera (different make and model), same thing, with any/all of the batteries.
Answer: You can use this item  for any rechargeable AA or AAA batteries that needs recharging, whether there are fully discharged or otherwise. Does it quickly as well.