SunLabz NiCd 3000 mAh C Rechargeable Batteries Pack of 8

Updated 5/22/17. The company reached out to me and offered to send me a replacement set of batteries. The new set is working fine. I now believe the root cause is the "discharge" feature on my EBL charger. These batteries do not like that, but in absence of that these batteries work fine. I applaud the company for monitoring the feedback and sending me the replacements. Good product but better manufacturer.My original review below:I bought these and a set of Tenergy C batteries at the same time. Of the 8 Sunlabz 5 of them have failed. None of the Tenergy have failed. All are used in my son's fleet of Hess trucks. No crazy use and we have a great EBL charger. These batteries are a complete waste of money and I'm disappointed in myself for ordering these cheapie batteries in the first place. Super dissatisfied and will not buy Sunlabz anything again

I purchased these to add more AA rechargeable batteries to my collection. I have been using Amazon Basic rechargeable batteries until this point and they have been fantastic. These, on the other hand, are poorly made. The sizing of them is just slightly off where certain product will register them and others won't. I had my issues in my Xbox One controller where it had to be spun to find a sweet spot to get it to even work. My charger, which works perfectly for all of my AA and AAA batteries would only register 4 of these and the others I had to really fuss around with until they were on and charging.The two I actually used only lasted about half the time of my other batteries of the same size.This is a junk product and you are going to get what you pay for. Spend a few extra dollars and buy Amazon Basics. They are relatively inexpensive and probably made by a major battery company anyway. It actually is the first product in a long while to make me angry. How can this have as many stars as it does when I see so many other people with the same issue?

BUYER BEWARE:Unfortunately, I was duped by the many positive reviews that I found for these batteries on Amazon and on other websites. I love rechargeable batteries, specifically the Sanyo/Panasonic Eneloop batteries. Those batteries charge quickly and hold their charge for a long time. I was looking for a set of C and D cell rechargeables for some LED candles that we use as nightlights, and some Roomba Virtual Walls/Lighthouses. I was unable to find Eneloop-branded C and D cells (just spacers for their excellent AA batteries), and was hoping for something with a higher mAh storage rating, and found these SunLabz batteries. I also bought a fancy 'smart' charger that monitors the batteries and will not overcharge the batteries. They will also fully discharge and recharge the batteries in order to refresh them, if you so choose.Once these batteries arrived, I put them to use right away. Even in their first charge/use cycle, I found that they discharged very quickly, and several of the batteries were unchargeable/Dead after only a single use. Please heed the 1-star reviews from verified purchasers - these batteries are crap. You'd be far better off getting spacers for the excellent Eneloop batteries instead of wasting a bunch of money on these. The quality control is not good, and the technology is very outdated. I wish I had done more research on these before purchasing...

I had been using Eneloop rechargeable batteries for years, which had worked out very well. This time when I went to buy some more batters (after years of use, the Eneloop batteries were still going strong, I just needed more batteries), I decided to save some money and buy these SubLabz batteries. Unfortunately, these SunLabz batteries don't hold their recharge for long, AND, in short order, they didn't even take the charge!! In the meantime, my old Eneloop batteries were chugging along. Strongly recommend that you don't waste your money on these SunLabz batteries.

These rechargeable C batteries last WAY longer than typical C batteries. We find that these hold a charge twice as long as the AmazonBasics do. Before, we were going through AmazonBasics so quickly; it felt really wasteful. I'm glad we upgraded to these. We use our C batteries in an automatic pet feeder, in case you are wondering. The AmazonBasics usually died after 3 weeks of use, but these ones last about 2 months before needing a charge. I'd highly recommend these if you go through a lot of C batteries.

Not sure if the problem is the batteries or the charger I got with them. When I placed them in the charger, they indicator light was red (indicating they were not charged). A couple hours later, the light was green, suggesting they were charged. I put them into an item and they didn't work at all. To be sure it wasn't the item, I tried other batteries after and they worked fine. This came with 8 batteries and I only needed 3 for this particular item, so I tried different combinations of 3 from the package. They all appeared to be duds. Irritating.

I love rechargeable batteries, read all the great reviews, but I am completely dissatisfied. I have already had to discard 3 of the 8 due to....?? I have never had issues with rechargeables before I brought this brand. The batteries I had to discard were cycled once maybe twice....then....nothing. Shortly after recharge they quit working (voltage well below 1.0V). I expect to have to throw away more of the 8, unfortunately. I have only had these 1 month.

So far so good on these batteries but I had bought 2 packs of 8 and one of the batteries will not charge.UPDATE:I have had several of these batteries not work at all when they had been sitting in the charger and appeared to be fully charged. Also For some reason the SunLabz charger keeps getting an error and then the batteries appear to loose all their charge. When I unplug it and plug it back in they start charging again. :( I had high expectations for this product but so far I am unimpressed. I hope we just got a bad batch and this can be remedied. Too expensive to be having these problems.