The BESTON 1000MAH 9V : LITHIUM USB-MICRO is perfect for your everyday use of multimeters, microphones, intercoms, children’s toys and more. Being rechargeable there is no need to dispose of this battery once it runs flat, just plug the supplied Micro USB cable into the Micro USB port on the battery and let it recharge. The Beston 9V 1000mAh Rechargeable Batteries have a max cycling life time of 1000 cycles.