Tenergy TB6x4 Intelligent Four-Channel Balance Charger Tenergy TB6x4 allows you to plug 4 batteries into one charger simultaneously and will automatically charge all at once to their maximum capacity. Optimized operating software to prevent overcharging & maximize safety. Balancing independent cell battery discharge & automatic individual cell shut-off when abnormal discharging occurs. Adaptable to various types of lithium batteries (i.e., Li-Ion & LiFe). Maximum safety with Delta-peak sensitivity.