Get rid of disposable AA-batteries! Here's a proper 14500-battery (14.5 x 50 mm / 0.57" x 1.97") that you can recharge using a Micro-USB cable.

• Technology: Li-ion
• Nominal voltage: 1.5 V
• Capacity: 1600 mAh
• Charging via Micro-USB-port only. Do not use a charger or charge within any device
• Charging current: USB 300 mA (330 mA max)
• Unique structural design for better impact-resistant
• Built-in protection against overcharge, over discharge, short circuit and over-heating ensure the safety and good performance of the battery
• Designed to retain up to 75% of its original capacity at 500 full charge and discharge cycles
• Size: 14,5 mm x 50 mm / 0.57" x 1.97"
• Warranty: 12 months
• Micro-USB charging cable not incluced
• Package: 1 pcs blister