USB Input gives you more options, it can connect with adapter, power bank, PC and many more 2A USB devices.
Hixon lithium aa batteries with Charger,3500mWh High-Capacity AA Rechargeable Battery,Constant 1.5V rechargeable battery aa(4AA Battery+Charger)
Hixon 1.5V Rechargeable AA Batteries,8 Pack 1.5V AA Lithium Battery with Black Fast Charging LCD Display Charger,3500mWh and 1600 Long Cycles Double A Batteries,Constant 1.5V Output,Max 3A Current
Hixon Lithium Aa Batteries with Charger,3500Mwh High-Capacity AA Rechargeable Ba
Rechargeable AA Batteries, Ni-MH AA 900mAh Rechargeable Batteries, Double A 1.2v Solar Batteries for Garden Landscaping Outdoor Solar Lights, String Lights, Pathway Lights (4 Pack)
PowerTrust - Rechargeable AA batteries and AAA batteries (4 Pack) with 8 bay AA AAA battery charger, Ni-Mh rechargeable battery charger
HiQuick Rechargeable AA Batteries, 1200 Cycles High Capacity 2800mAh Ni-MH AA (Double A) Rechargeable Battery 1.2 Volt(1.2 V) Low Self-Discharge (Batteries x12)
