Replace for EGO batteries BA2800 BA2800T BA1400 BA1400T BA4200 BA4200T BA2242T (Tips:Please firstly use it almost no power and be cool then put to charging as this battery almost full of power when you get it) Much Better Running Time Than BA1400T 2.5Ah and BA2800T 5.0Ah Compatible with all EGO POWER+ outdoor power equipment PH1400 LB6500 ST1510T HT2400 LB6504 CS1604 LM2100 etc Power management system protects the battery pack from the most harmful elements a battery can face from overheating to over-discharging Upgraded fuel gauge to show how much run time is remaining – 20% increments We suggest this battery use on the chain saw,leaf blower such small-middle power tools and when 20% power left and let this battery cool then put to charge to extend life,any question, please feel free to contact us. 56v replacement battery for ego