Model:7.4V 3000mAhBattery type: 18650 li-ionNominal capacity: 3000mAhRated voltage: 7.4VBattery plug:XH2.54-2P PlugSize: 19*37*66mmProtection Board:overcharge,discharge,overcurrent,short circuit,etc.The battery used in speakers, answering machine, wireless monitoring equipment, Bluetooth Speaker,medical equipment, instrumentation, led lighting, traffic signs, small portable household appliances, power tools, toys .Pay attention:The color deviation may differ due to different monitor configurations.