Rechargeable Lithium D Batteries with 4 in 1 USB-C Charging Cable,1.5V D Size Cell Battery 5600mWh for Flashlight Toys & floodlight (4 Pack)

I've used lithium rechargeable batteries for nearly 10 years now and over time, they just keep improving. However, if anyone thinks that this battery chemistry (vs the alkaline brothers) are comparable, you'd be sorely mistaken. These lithium versions simply do not hold the same saturation of charge, or duration of discharge as an alkaline battery. However, you can't recharge an alkaline battery, so the point here is not achieving comparable battery capacity, it's about the ability to charge it right back up, for pennies, rather than having to buy and replace the entire battery. Perhaps this saturation of charge will become a moot point in the coming years, presuming improved battery chemistry are developed but until then, this is what you get and for us, it's a welcome trade off. I'd much rather pull out a battery like this and recharge it in an hour and pop it back in, so my child can go play with their old-school battery-operated toy, than continue to waste our money replacing alkaline batteries, even if they do last a bit longer initially. Anyhow, these D batteries have already paid for themselves, in our household and will continue to make us money, so to speak, for years to come, as they can be recharged an incredible amount of time before even beginning to diminish output. This is the same reason that I build li-ion 18650 battery packs using recycled batteries from scooters, laptops, etc, as they almost always hardly lose capacity, despite some of them being more than 10 years old before I get my hands on them. As internal resistance increases with time and use, the storage and discharge capacity will dwindle slightly but the batteries themselves, will continue to serve me well for many years to come. It's a beautiful thing, imo. Anyhow, thus far, I highly recommend these batteries. If however, over time, if they ever fail or become problematic, I will certainly update this review accordingly. Until then, enjoy!

couldn’t ask for more, i never thought i’d need D batteries until I bought a live well bubbler.These Li batteries last forever. Infact, I can run my bubbler with just one battery inside. Plus it’s rechargeable with the same charger as my Iphone 15!! USB C errything this is 2024 peeps!!!These two batteries kept the bubbler on for approximately 20 hours straight no problemo.

Love these. As D Batteries are quite expensive. Work well

Love the rechargeable D cells which are hard to find. We use them for the security camera and floodlights outside which can eat through batteries.

I have some rechargeable batteries for my flashlights, so I thought what a great idea to have rechargeable batteries for a camping lantern that I use in my bathroom. Yes, my bathroom is that dim. Was I ever wrong with this brand.I only use the light when I’m in the bathroom, no more than 10 minutes at a time when I’m showering. I used it once and they were dead. And not even for the shower. So disappointed with these. Please don’t waste your time or money on these useless batteries. The only good thing is you get a charging cable that will charge all 4 at once and you can use that for other devices. Not worth the price though. So if you find yourself in the product listing for this, run. Run very fast. Completely useless.

I use this in my portable water pump and they last longer than expected with each charge. I can pump about 10 5gal buckets of water into my camper before needing to be recharged

No special charger req'd, just a C cable. It comes with a 4 way splitter C-USB cable. But if you need to charge, any C-USB cable will work.The 5600mAh will not run my laser level which requires 4 batteries. I am still having to use regular non rechargeable batteries. I will order 15000mAh batteries to see if they will work.

I bought 2 4-packs of these as I built a new shed with no electricity. I charged the batteries and put them in 2 motion activated LED lights mounted to the bottom of the trusses. This was in early June so long days of daylight for the next 4 months. They worked great for the summer but then I noticed one not coming on in September. I took the batteries out and plugged them in and noticed one of the lights that are supposed to blink when charging was not coming on. After an hour that light did come on and I fully charged them overnight. Re-installed the next day and everything was working properly including verifying that the light shuts off after 20 seconds of no motion. Two weeks later dead again. The first light is still going strong with no re-charging to this point. So I do believe one of my batteries is not working properly which makes the whole light not work. Otherwise I would give it 5 stars. About to check if I can buy just one or possibly a 2 pack but disappointed I have to spend more money.