Keenstone 18650 Battery Charger, Smart Universal Charger LCD Display for Rechargeable Batteries Ni-MH Ni-Cd AA AAA Li-ion LiFePO4 IMR 10440 14500 16340 RCR123A 26650

I recently purchased this battery charger for my older 18650 batteries, and it proved to be an incredibly useful tool for assessing their condition. This charger not only enabled me to determine whether the batteries were charging properly but also allowed me to identify any non-functioning ones that needed to be discarded.Firstly, the charger's functionality in testing and charging 18650 batteries was impressive. It provided clear indications as to whether the batteries were charging or not, eliminating any guesswork. This feature was particularly helpful in determining the status of my older batteries, as their performance had become unpredictable over time. The charger's intuitive design made it easy to understand the charging process and assess the batteries' condition accurately.The convenience of this battery charger was another standout feature. It allowed me to charge multiple batteries simultaneously, saving time and effort. Instead of having to charge each battery individually, I could conveniently place them in the charger and let it handle the process efficiently. This feature was especially valuable when dealing with a large number of batteries.One aspect I particularly appreciated was the charger's ability to identify non-working batteries. By indicating whether a battery was charging or not, it enabled me to identify those that were no longer functional. This feature allowed me to declutter and discard the batteries that were no longer useful, ensuring that I only used reliable and functional ones for my devices.The build quality of the battery charger was satisfactory. It was sturdy and well-constructed, providing a sense of durability. The charger's design also featured safety mechanisms to prevent overcharging or overheating, ensuring the protection of both the batteries and the user.In conclusion, the battery charger for 18650 batteries proved to be an invaluable tool for assessing the condition and charging capabilities of my older batteries. Its user-friendly design, ability to charge multiple batteries simultaneously, and the convenience of identifying non-working batteries made it a worthwhile investment. If you have a collection of 18650 batteries and need a reliable charger, I highly recommend considering this product. It effectively helped me revive usable batteries and discard non-functional ones, ensuring optimal performance for my devices.

This is a very nice charger. Charges very fast. Great being able to load up to four batteries at a time. I have flashlights attached to the ends of the barrels of my guns, which I need to charge. Before this I had only a single charger which would take forever.

I recently purchased the Keenstone Smart Universal Charger for my rechargeable batteries, and I'm thoroughly impressed. Here's why it deserves five stars:Versatility: This charger supports multiple types of rechargeable batteries, including Ni-MH, Ni-Cd, AA, AAA, and Li-ion 18650 batteries. It's incredibly versatile and handles different sizes and chemistries effortlessly.Smart Features: The LCD display provides real-time information on charging progress, including battery voltage, charging current, and charging status. It's intuitive and makes monitoring easy.Efficiency: Charging is fast and efficient, with smart technology that automatically detects battery type and adjusts the charging current accordingly. This ensures optimal charging without overcharging or damaging the batteries.Safety First: The charger incorporates safety features such as overcharge protection, reverse polarity protection, and short circuit protection. It gives me peace of mind knowing my batteries are charging safely.User-Friendly Design: The charger is compact, lightweight, and easy to use. Inserting and removing batteries is straightforward, and the controls are simple enough for anyone to understand.Overall, the Keenstone Smart Universal Charger has exceeded my expectations with its performance, versatility, and user-friendly design. Whether you're a hobbyist or just looking to recharge your household batteries efficiently, I highly recommend this charger.

In the last year Ive bought approximately 5 battery chargers. They all were lightweight, cheaply made, and 4 of them caught on fire within the first week of owning them. (The 5th one also caught on fire and electrocuted me, one month into using it.) I could tell from the weight of the package that this charger was different. It came with both home and car charging ports and has an amazing LCD display that is backlit. It also came with an instruction booklet I was able to read without a museum grade magnification. Im so excited to give this 5☆'s and recommend this to everyone!!!

This charger works great for me. I like that you can charge 4 batteries at a time if needed, I usually just charge two. One of the charging bays has a messed up spring in it and I have to pull the lead down by hand, but I’ve gotten used to doing that, so not so much of a problem. Charging time is not that long, although I usually charge at night and take them out in the morning. It great to see when a battery is getting low on accepting a charge, I know when to replace a battery.

This is a GREAT product! I absolutely LOVE that you can plug it into the wall. That is really important to me as my hands are not as nimble as they once were PLUS you can actually see where to plug it in both in the wall and into the unit without fussing around with little slot like plugs. If that weren't enough, you can also plug it into the lighter outlet in your car! And, the frosting on the cake was that it got delivered within hours of placing my order!~ I LOVE AMAZON!