Product Description\n Product Feature:\n 1. Refresh Button: \""DISCHG\"", easy to use cycling feature fully discharges and charges your cells to extend their overall lifespan and performance;\n 2. Intelligent Control: Advanced MCU control and -\u2206V function, over-heat and over-current protection, short-circuit protection, non-rechargeable and defective battery detection, automatically turn to trickle charge when batteries are full charged;\n 3. 16 Slots Independent LCD Screen Display: Visually displays the charge status of each battery and can determine the current battery level;\n 4. Long and stable of battery life, up to 1,200 rechargeable cycles;\n 5. Low self-discharge: 75% of the initial capacity will be maintained after 3 years of use. It is strongly recommended to fully charge every 3 months; it is best to fully charge each battery before first use.\n Attention:\n--Please ensure the battery installed is correct: make the +/- pole of the battery is match for the +/- pole of th.