Rechargeable D Batteries

Some rechargeable D cells are light weight, and much of their volume is taken up by charging circuitry inside the battery. This one requires an external charger but last a long time, like a D cell should!

Just finished charging in a powerowl charger. Took 14 hours on slow. They got up to 108F before I put a fan on them. 1 Battery said done. I took it out and put it back in. It started charging again and finished with the other 4 about the same time. I put them in a led flashlight and it's just as bright as using alkaline. No other testing done other than they work so far. Why they all got hot in the last few hours of charging? Don't know. To early to say happy with, or any other comment. So far so good except the hot part.

First, I would like to say that I have went to the big box store and bought name brand D size batteries. They weigh just a little more than a paper clip. I took a dead one apart and realized it is nothing more than a cheap Chinese AA battery in a D size case. Now, on to these batteries. I was shocked when I received the package in the mail because of the weight. These batteries weigh almost 1/3 of a pound! they are beefy and have some weight to them. I bought them for use in my stick pump to transfer diesel for my heater. I charged these all the way and have pumped almost 500 gallons and they are still going strong! I can't believe how much power these bad boys hold! They do tend to "dog down" a bit in the cold (-20), but just a hair. Regular alkaline batteries would get me about 20-30 gallons before the batteries were shot. I am actually going to place another order to get more of these.

I have several "smart chargers" that allow you to control and monitor everything about rechargeable batteries. They've prolonged my 50 eneloop batteries for years. Finding D sized rechargeable batteries doesn't offer a lot of choices so I gave these a shot. They come with an inexpensive dumb charger that is a plus as they're hard to find. They show red and then green when full. When I place a charged D battery from the dumb charger, they show as 72% on all the smart chargers. Forcing them to continue to takes days and some get to 100%. As I only use these for auto opening trashcan lids, I'm not sweating it, they still save me money on the 2nd year on. Last for months so it's all good. If you're using these for anything else, just try them out for a couple weeks to make sure they'll do the job. They do seem to hold a charge pretty well as receiving them years after manufacturer date still had almost 40% left. Also some makes, not this one, are just AA batters put inside a bigger case, so they can't last long, others have a USB port built in to charge, which might be ok, but I didn't want to want those either because they obviously take up room inside and aren't real batters. For all I know these too have that and are just sealed but I'll post back if they less than a year in the device I use as that's what I've been getting with all of them using regular alkaline cheap ones. So I'll give this 4 stars for now and if they fail in any way I'll update the review. Not thrilled they're made in a way to look just like eneloop hoping people will shop quickly like I do and not notice but so far so good.

I have been using these batteries over two weeks by charging them twice a week while I was using them in my flashlights and my small project power station is it power source to test d programming boards and small electronic devices. These so far have been the best rechargeable batteries that I have ever owned, as they don't heat up because they can handle high discharge rate and they are leak-proof and I assume they do have low this charging rates than they are not in use, so they keep the energy while in storage mode for a long time. And they also accurate on their capacity rate, it takes a full charge for full capacity and it really last long even though van I use them heavily on my big outdoors LED and non LED flashlights. Once I got them in my hands I realized how quality they feel they are definitely heavy which tells me that they got a good structure in them and also if when you drop them they don't vent so that's a quality battery right there out of the box. I definitely we commend these batteries especially after seeing how they perform and have they are accurate to what they described in their specifications. I have ran a couple tests and charge them multiple times and I use them in outdoors big flashlights that they were on for hours these are good batteries to use for any purposes. Update: These batteries are the best out so far. I have been using rechargable batteries for long time, as an engineer it is essential for me save the environment by not using disposable batteries and efficient to use rechargable batteries in any case. There batteries are: Affordable. Well made. Quality material. Very high capacity. Slow discharge when not in use especially. Charges up to 1.55v for 10000mah and i even seen 10050mah, 10200mah ratings on my charger. No leakage and they don't overheat much (some do if i overcharge them, which is normal). Most importantly, they last long time! I am so glad that I found these batteries, kids can't do it without their toys or flash lights powered on, so it's crucial to have quality batteries like these powerowl batteries. I highly recommend these batteries if you are looking forward to save some money, save the environment from the disposable batteries and keep the stuff powered long time without any issue. Teaching my kids to sing: ⚡⚡⚡ I've got the Power⚡⚡⚡

Great customer service! Very Responsive and helped correct an issue with one of my batteries!

If you are like my mother you probably have a lot of devices like fake candles and lanterns that take either AA, C, or D batteries. These tend to last a while but you will go through a lot of batteries when you could just buy a rechargeable version and only have to recharge them when they run low. I have only 2 things in my house that run off of D batteries so this was a perfect way to stop using all the alkaline batteries I have and I can save them for emergencies instead of using them for everyday lighting that will be on every day/night. They pay for themselves soon enough. I use my Nitecore intelligent recharger to charge these batteries and they do hold around 10,000 mAh of energy so charging them even at 2000 mA will take about 5 hours and they can get very hot, if you don't know how to properly charge these batteries I suggest getting the special chargers that are built specifically for them but if you know how to charge normal AA/C rechargeable batteries, as long as the D fits in the charge port then there is no difference in charging methods, it still -dV/dt (don't worry if you don't know what that means)

Last time I bought the batteries were great, ready to go. I purchased a second time, because both sets of my rechargeable D batteries only last a month tops. The batteries I just purchased were sealed, but completely dead when opened to install them in my security camera. I had to recharge them. They are still charging, and not sure how long the brand new batteries are going to hold their charge. My camera uses 3 batteries. The 3 that are charging, are the 3 batteries I just bought and opened package.

كنت كل اسبوع اخذ حجارة.عاديه وتكلف في السيوله وكانت حجاره الشحن احسن طريقه واوفر

I'm using these batteries for a motion sensor light inside a garden shed. I had one battery fail after eleven months. When I tried to charge it, the digital readout on my charger indicated an error, no matter what I tried. The other 3 batteries were fine. I emailed the company to ask for help with this issue and they sent me a whole new pack of 4 batteries for free. Exceptionally helpful, fast, and generous support. Would definitely recommend.

They are what I expected them to be.

I like them would buy again

good product and good price