We purchased 4 pcs Tenergy Li-Ion 18650 3.7V 2600 mAh Rechargeable Batteries with Internal PCB for our flashlight from Battery Superstore through Amazon.com and used 2 in rotation while we were in the Philippines. 2 batteries were not used. We purchase another flashlight and charger to send to the Philippines and attempted to charge the other 2 batteries for use in the Philippines. One of those batteries would not charge. We have appealed to Battery Superstore explaining the reason for our claim of which they have denied us specific... read full review »