Ansmann are typically German, in the best way. They produce a range of batteries and battery chargers that are made to the highest quality. They are not the cheapest but you get what you pay for. If you want reliability and quality in all aspects of service then you would be hard presses to find better.
They also produce high capacity AA 2850mAh rechargeable batteries and AAA 1100 mAh rechargeable batteries. They recently introduced the maxE Rechargeable Batteries Range that exhibit very Low Self-Discharge (LSD) characteristics.