Attention Please recharge them before first use: Rechargeable battery is not allowed with fully charge during transportation according to the battery safety regulations, so this battery keeps about 50% power when manufactured. Good Performance at the temperature from -77℉ to 100℉, don't use it in any other extreme weather! Battery for Arlo Camera This rechargeable CR123A battery can support Arlo Camera (VMC3030 / VMK3200 / VMS3330 3430 3530), Flashlight, Digital Camera, Camcorder, Electronic Toy, Calculator, Mouse, Alarm System and more! Long-Lasting Performance RCR123A battery with 750mAh capacity can be recharged more than 500 times, no memory effect. Keep a high stability and convenience than one-time-use CR123A battery. Smart Protection Built in protection against over-charge, over-discharge, short circuit. For Charger Selection This battery can work with 3.7V-4.2V RCR123A charger. Do not over-charge this battery for safety concern! Hassle-Free Purchase We provide 30 days refund, 12 service and 24x7 service, please feel free to let us know for any question. What's in the box 8 * 3.7V RCR123A rechargeable batteries.