2-PACK) 3.2V 600mAh (14 x 50mm) 14500 SIZE AA LiFePO4 Rechargeable Batteries - Walmart.com
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KLOVA 4Pcs No Power AA 14500 LR6 Dummy Fake Battery Setup Shell Placeholder Cylinder Conductor for AA Battery Eliminator and more : Amazon.co.uk: Electronics & Photo
Fenix 14500 3.6 V, 1050 mAh Li-ion Protected Battery