The V2299 Universal Smart Charger and the Tenergy NiMH batteries offer a convenient and reliable solution for charging and using rechargeable batteries. Here are the specifications and features of the charger and batteries:

Charger Specifications:

Model: V2299
Brand: Vanson
Input: 100 - 240V AC 50/60 Hz
Output: 12VDC 1000mA
Charges AA, AAA, C, D, and 9V batteries
Charges 2 or 4 batteries at a time
Charges both NiMH and NiCd batteries
Powered by an external AC adapter
LED display for rapid charge, trickle charge, and bad cell detection
Intelligent microprocessor controlled to automatically cut power when the battery is fully charged
Negative delta V detection protects battery life
Automatic charge current selection for different battery sizes
Measurements: 5.0"W x 6.7"L x 2.5"H

Charger Charge Times:

AAA 600 - 1200mAh: 1 to 3 hours
AA 600 - 2900mAh: 1 to 3 hours
C 1200 - 6000mAh: 2 to 8 hours
D 1200 - 12000mAh: 2 to 16 hours
9V 100 - 325mAh: 9 to 20 hours

Battery Specifications:

Size: D
Capacity: 10000mAh
Chemistry: Nickel Metal Hydride (NiMH)
Voltage: 1.2 Volt
Brand: Tenergy
Included Quantity: 8
Battery Features:

No memory effect
Reliable service life
Long-lasting performance
Rechargeable up to 1000 cycles

The V2299 Universal Smart Charger is designed to handle multiple battery sizes (AAA, AA, C, D, and 9V) and can charge 2 or 4 batteries simultaneously. It offers various charging modes and has an LED display to indicate the charging status. The charger's intelligent microprocessor ensures efficient and safe charging, automatically cutting off power when the battery reaches full charge. The Tenergy NiMH batteries have a high capacity of 10000mAh, providing long-lasting power for your devices. They are rechargeable up to 1000 cycles and offer reliable performance without the memory effect.

Overall, this charger and battery combination provides a convenient and efficient solution for charging and using rechargeable batteries in various sizes.