Artman Rechargeable Lithium D Batteries 4 Pack, 9000mWh Rechargeable Lithium-ion D Cell Battery with 2 in 1 USB-C Charging Cable, 1.5V Batteries D Size for Floodlight Toys, Water Heater, Gas Stove

If you are tired of constantly buying and throwing away expensive alkaline D batteries, the Artman Rechargeable Lithium D Batteries (4 Pack, 9000mWh) are an absolute must-buy.Here is why these batteries stand out:Incredible Convenience with USB-C: The standout feature is the built-in USB-C charging port right on the battery. No bulky, dedicated battery charging docks required—just plug them in using the included 2-in-1 cable.Handy LED Indicators: Each battery features a built-in LED light that flashes blue while charging and turns to a solid blue light once fully powered up, taking out all the

These seem to work well. It took about two hours for the first charge. I like the double charging cable to be able to charge two at a time, only thing I would change is to make them a bit longer that 6 inches. I do light the charge indicator light as well.I got these to use in a two-cell mag light with a LED bulb. The spec on the bulb was a draw of 1 watt; I ran a test to see how long the batteries would last. After running for 9 + hours, I gave up trying to run them down. Unknown part is how long they will stay charged in the flashlight without use. So far, I pretty impress with the product.

These batteries are such an improvement over constantly purchasing non-rechargeable batteries. They are much lighter, easy and quick to charge with the included cables, and their output seems to be consistent for the duration of the charge. The packaging and attention to detail make these a recommended purchase.

Charges up okay. Take a while. One took a minute to light up for charging. Will continue to test and update.

I switched to these rechargeable batteries to save money, and they’ve been working great. They hold a good charge, recharge quickly, and the USB-C charging is really convenient. So far, they’ve been reliable and I’m happy with the purchase.

I have an LED 6 D Cell Maglite and an LED Converted 2 D Cell Maglite. This pack of 8 rechargeable Lithium D's are just fantastic. My Mrs. and I often walk late evenings for an hour or so and we were burning through normal brand D Cells at a silly rate. This was the perfect solution!

These batteries are absolute junk. My original intended use was for a LED flashlight, but they performed poorly. The lack of brightness was very noticeable compared to standard batteries. Even after a full overnight charge (and they do take a long time to charge), they didn’t perform well.I decided to try them in my radio in the garage. Within 1.5 months, the batteries were dead. I only used the radio 3-4 times in that time period…a total of 3 hours. I’ve had standard batteries last a full year in that radio.The batteries are half the weight of their counterpart (D-cell = 68g vs 135g for a sta

My boys have a car track that uses 4 D size batteries.. expensive to replace every time! When I found these, they were a life saver. They last longer then I thought they would and I just recharge them so they're ready to go the next time they play on their track.