Rechargeable Lithium C Batteries with 4 in 1 USB-C Charge Cable,4 Pack C Cell Li-ion Battries,LR14 1.5V C Size Cell Battery Replacement 4100mWh for Floodlight Toys(4 Pcs)

Really like these batteries. Bought the C size for my son’s baby swing. They last about two days, which may not sound like much, but we were only getting four to five days from the regular batteries. These are fully charged in two hours or less, so we got two sets. One on the charger and one in the swing. It works really well. They have a light that indicates when they are charged when they are on the charger which is really nice. The price is great when you consider how much would have been spent on regular batteries. These are convenient to use. Hopefully they have a good life span.

These are great - they work exactly as advertised! They don't take long (a couple of hours) to recharge, and they last for at least 2 months so far on a single charge.

I bought these rechargeable D batteries for my daughter’s little swing because I was getting tired of constantly buying new batteries every couple of weeks. I’m so glad I made the switch — these have definitely saved me both time and money in the long run.One thing I love is how fast these batteries charge. I don’t have to wait forever to get them back in action. The 4-in-1 USB-C charge cable is super convenient for charging all of them at once, which makes life much easier.Now, the one downside — they don’t last as long as I hoped, especially with my daughter constantly using the swing every day. They usually die within a few days, which can be a bit annoying, but I guess it’s expected when you’re using them so frequently in a high-drain device.Still, I can always recharge them quickly, so it’s not a huge deal.Even though they don’t last as long as I’d like, I feel good about the savings and the fact that I’m not throwing away disposable batteries every few weeks. Plus, they do the job just fine for everything else, so they’ve still been a great investment.Overall, these rechargeable D batteries are a solid option if you're tired of constantly buying new disposable batteries. They charge fast, save you money, and are eco-friendly. Just be aware that if you're using them in high-demand devices like a swing that runs daily, you might need to recharge more often.

Works as advertised, when used in a flashlight not built for Lithium Ion Batteries the flashlight will get very hot and start to do long flickers, though the batteries seem to sustain no damage despite the improper use

I was skeptical, but they work good in my portable transfer pump, and cost less than a set of batteries.

Using in a mag lite. Improved brightness and weighs less. Single USB port to charge all 4 at once. Great value and convenient.

The batteries look good, and I like using usb c charge because I had the hardware to charge. They are lighter than NiMH.The bad and the reason they get 1 star is, they are absolute trash (junk). Do not buy these. The negative side of all 8 (2x 4 pack) that I bought was pushed (caves in). Very flimsy. They charged ok, but when input then I to a flashlight, they would not work. I could make them turn the light on by moving them around and not screwing the flashlight cover on.Maybe I got 2x bad batches but enough was enough. I changed to Amazon basic NiMH d cells and bought a charger for them. They will work just fine in my flash lights for years to come.I will not buy Li rechargeable batteries u til the quality is much much better.

These batteries so far are really good. I have recharged them a couple of times with no problem so far. They seem to hold the charge very well And are easy to charge.