Tenergy Centura 4000mAh NiMH Rechargeable C Batteries (2-Pack) - Low Self Discharge, Pre-Charged for Flashlights, Toys & Emergency Kits

I purchased this product (The product was OK, but AMAZON did NOT meet my expectations. It took three calls, three promises for actions, and two disappointments -- lasting over a week before my order was even shipped. SAD !!On April 7, 2013 I purchased a Sangean portable radio to take outside while I worked at our berry farm. Work is year round - selling and pruning. If I am working outside so is my radio. The radio takes 4 C batteries. I purchased Tenergy C rechargeable batteries. My radio just started playing for only 1 hour so my batteries were not holding a charge. These batteries lasted a little over 8 years! Needless to say, I repurchased the same brand. My radio still goes out with me on almost a daily basis. I plug it it when I come in and it is ready to go the next day. The batteries are dependable and a great bargain and I would highly recommend them.Lucky me, I got the defective batch as I ordered 2 of the cards and one of four batteries (Recommended by NLee he Engineer) will not charge when the other three are charging in my two month old One out of the six was a dud. When putting it on a charger, it gives an "Err" message, and won't recharge. Pointless to process a refund and have to send all six back. Hopefully, manufacturer will see my review and ship me a new one.I actually ordered a second set. My baby mobiles and other stuff, of course, would be powered by no less than C batteries but mostly D cells. Why they didn't just make it AC adaptered is beyond me (being cheap I guess). I have Energizer and Chicago Electric (Harbor Freight) rechargable Nimh before and decided to try this brand since they have gotten decent reviews. I have to say, they do feel sturdy as hell (weight and build). The also last longer - slightly w/ Energizer and more vs CE. They have kept much if not all of their charge even in cold - left the flashlight in the garage during this polar crap and the battery box is in the closet - not as cold but chilly and they have not drained like some of the others have in the past.Bottomline, not only did I buy another set of C, but I also have the 12 pk of AAA, 4 D and 8 AA. All work with different brand chargers too - have chargers from Radio Shack, Energizer and and older Tyco? All charged fine. I'm happy.Update: 10/10/16 still working fine. Been through 2 power outages since and another baby so even more toys to use them. I actually bought more Tenergy C batteries.Don't buy it, doesn't hold a charge for long. The outer plastic coating is coming off. Better to buy a known brand.Works well so far.Good value however not as long lasting as brand name.Nouveau produit pour moi Semble OK2 out of 4 batterie package where open when i got them.