Powerex Pro Rechargeable AA NiMH Batteries (1.2V, 2700mAh, 8-Pack)

I bout a set of 8 Powerex Pro AA batteries and used them exclusively with the Powerex MH-C9000 charging station. The batteries were marketed as Rechargeable Hundreds of Times and I think at one time I saw an actual number of 500 times advertised, which is standard for Pro AA batteries. However, after charging them about 28 times, they would no longer charge and the charger station would give error messages that the batteries were dead/done (error: HIGH). In about a 2 week span, all batteries had the error. I use a plastic battery case to make sure I would rotate/charge the batteries evenly. I still use the charger to this day with other brands of batteries, no issues. The charger is great. I contacted Powerex and they replaced all 8 batteries for free under warranty. The new replacement batteries lasted about 25 recharge cycles before they went into the HIGH error state and were dead/done. Having about 25 or 28 recharge cycles for a battery is far from the advertised hundreds. Plus, these batteries are marketed at 2700mAh. The Powerex charging station would tell me how much charge the batteries would take, and the best I could do in their early life was 2600mAh. After a few charges, they were only good for about 2100-2300 mAh. On the first batch of batteries, I would run these in my wireless headset and camera until the device would no longer power on, then recharge them. On the second replacement set of batteries, I would run them until about 20% remaining power and then recharge them. The end results were about the same. :(