ATTENTION:These are non-rechargeable/single-use batteries/disposable batteries. Please DO NOT recharge.This CR2 battery is not the same as a CR123A battery & the 2 batteries cannot be used interchangeably Safer, Greener, Longer Lasting with UL, RoHS certified– Each JESSPOW cr2 3v lithium battery is equipped with PTC protection including short circuit overcurrent protection and intelligent voltage surge safeguards, making JESSPOW cr2 batteries lithium ideal for high-drain devices. Wide Compatibility:Our CR2 batteries are designed to last in high-tech devices for door sensor，golf range finder，camra，mini flashlight，smoke detector，smoke alarm，smart sensor, wireless security devices and other small electronics and more, meet the needs of every family. LONG LASTING POWER:Our CR2 non-rechargeable battery adopts high energy aggregation technology that will last 5 times longer in high drain devices. REPLACEMENT BATTERY: 1CR2、5046LC、CR15H270、CR17355、DLCR2、EL1CR2、KCR2、RLCR2-2 CUSTOMER SERVICE - If you have any questions about the Product, please feel free to Contact us. I will give satisfactory service in the fastest time. cr123a 3v lithium battery,for switchbot,cr2 battery,cr2,cr2 3v lithium battery,cr2 3v battery，cr2 batteries，rangefinder batteries，range finder battery cr2