I bought one of the new Maha -MH-C801D AA == AAA Battery Chargers. chargers. It will charge up to 8 AA or 8 AAA at one time. There is a soft charge mode that lowers the charge amperage by 1/2. Then there's a mode that charges, discharges and then recharges the batteries up to recondition them back into good shape. There is a rest period in between the discharge and recharge cycle to allow the batteries to cool down. Each battery is independant of the others and the recharge won't start until each of the batteries in the compartment is fully discharged. This ensures that all batteries are charged up to the same point I guess.
I used this charger to cycle all my energizer, duracell, foxpro and some new Rayovac Precharged batteries. It took me a week or more to get all my batteries conditioned.
I also purchased two of the 4 channel Maha battery chargers Model MH-C204W as they can Rejuvenate old batteries sometimes when the 8 channel charger can't. So the literature said. But I found that the 8 channel was doing a really good job on all my old batteries.
I have many of the energizer AA's that are several years old. They range in millamp hr ratings from 1850 to 2100 to 2500.
Make sure that when you charge these batteries you make sure that all of the batteries in the charger are the same Millamp/hr rating. Don't mix the 1850 mAh rated batteries with the 2400 mAh batteries in the charge at the same time. Match the batteries together in the same power range and then charge all the same time at the same time.
The Mh-C204W will charge two AA at 2.0 A or four AA's at 1.0 A.
1.0 amps is the same at 1000 milliamps.
Now that I have all my batteries rejuvenated and fully charged up and tested I need to test them in my Foxpro FX3 Digital Caller and see how far away the Foxpro can be place from the Remote and still work well. My last hunting trip I put the Fx3 out about 30 yards and still had trouble getting it to work with the remote. I had the FX3 sitting on the ground in plain sight of my stand and had a hard time getting it to turn on. And the volume was lower than I expected it to be when it was that close to me. It was early morning in Oct but it was cold outside. I was up all night hunting and scouting and was very tired that morning. So I may need to repeat that setup to see if things work better now that I have fixed up all my rechargeable batteries.
Just remember that the regular AA NiMH batteries that are not low discharge must be charged up every month. The worst thing you can do with these batteries is to let the sit idle for long periods of time. That may ruin them from what I have read.
The newer type of low discharge can sit for a year and only lose about 80% of their charge so the literature states. Most all my newer purchases are the low discharge types. Duracell and Rayovac call them PreCharged NiMH batteries.
The Foxpro that come with the FX3 are not the low discharge type as far as I know. But I am not sure about this. But they don't claim to be low discharge so I guess they would say that on the box if they were low discharge type.
http://www.thomasdistributing.com/MAHA-MH-C801D-AA--AAA-Battery-Charger_p_166.html