Amazon.com: 2 Pcs 3.7V Rechargeable Batteries 1/2AA Lithium ion Battery icr14250 300mAh (Flat Top, 0.57 * 0.98inch, Shorter Than AA and AAA : Health & Household
PKCELL Flat Top 26650 3.7V 5000mAh Rechargeable Li-Ion Battery
UltraFire 5000mAh 3.7V 21700 Rechargeable Lithium Battery With Protect
Amazon.com: PKCELL ICR18500 Battery 3.7V 1400mah Li-Ion Rechargeable with Button Top 6PC(They are not 1865mm Batteries Also Not AA Size Battery) : Health & Household
PKCELL Flat Top 18650 Li-Ion 3.7V 2600mAh Rechargeable Battery