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)

We used these for our vibrating bouncer for my infant daughter. These batteries were so so so helpful to us! They’re a great price, light weight, they lasted pretty long considering how often we used them and they charged pretty quickly! What a quality purchase!

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!

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

It works good and has a red light and a green light when changing

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.

These batteries are super light & last a long time in my mag-light. I did swap out the bulb for a led bulb so I’m sure that helped. I don’t use my light often but I haven’t had to recharge them yet.

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.

Seems quick to charge but also quick to die! Does last as long as disposable batteries as it seems we're charging them more quickly then if we used disposable batteries. Probably 5 charges to 1 set of disposable. Would like to have ones that lasts as long as disposable batteries.