The Golisi Needle 2 is a compact charger with 2 slots. It has a USB power port for 1A charge. And it's compatible with almost all types of cylinder-shaped rechargeable batteries. You can charge two batteries at the same time.

Specifications

Case materials: ABS/PC/Fire proof
Input voltage: DC 5V /1A
Output current: 0.5A each slot
Power port: USB
Protection: Short circuit protection/Over current protection/Reverse connection protection  
Battery compatibility: Li-ion 18650, 21700, 26650 / Ni-mh / Ni-cd /aaa/ aa (almost all types of cylinder shape rechargeable batteries)
Working temperature: 0-40℃