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.

• 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
• Warranty: 12 months
• Micro-USB charging cable not incluced
• Package: 1 pcs blister