8 Pack Brand New EdisonBright EBR65 16340 (RCR123A) rechargeable Li-ion batteriesThese lithium ion 16340 batteries provide high performance and can be recharged up to 500 times saving you money in the long run. Each battery comes equipped with a built in circuit protecting board and triple over heat protection, so you don't have to worry your brand expensive light cutting short on you. Features Higher energy density500 recharge cyclesTriple over heat protectionFree from leakage of liquid electrolyteOver discharge protectionHigh