Review on 🔋 Keenstone Premium Universal Battery Charger: 4 Bay Charger for 18650, Li-ion, Ni-MH, AA AAA Batteries - LCD Display - Grey by Alison Jackson

Upon arrival I tested it on 3x 18650s. Push the spring-loaded arms down to insert each battery, and with the third arm down, the back cover popped out. After "popping" the back cover again and repeated attempts to insert the third battery, it seemed like the spring tension on the levers was enough to overcome the "locking" mechanism holding the back cover in place. (I saw some reviews with the same issue before I bought it, so it wasn't that surprising.) I was able to contain myself by putting in a third battery and once installed the charger worked pretty well. Changed the charge rate to "1000mA" and went from 2.5V to 4.2V in a few hours. The readings seemed pretty accurate. I chose to "glue" the back with superglue (instead of waiting a few more days for a refund/replacement) as the only issue seems to be that the glue used by the manufacturer was either poorly applied or just "cheap". " was. and therefore not strong enough to keep the back cover closed by the tension of the loading spring.