CITYORK 9V USB 650mAh Rechargeable Li-ion Batteries with USB Cable for Microphone, Smoke Alarm, Toy, Remote Control and More Device (2 Pack) by Amazon.co.uk

• \u3010High Capacity & Low Self-Discharge\u30119v Li-ion Battery contains 2 high energy density Li-ion battery cells, thus having a high capcity of 650mAh, can last longer after each full charge. Low self-discharge technology make batteries hold 80% power after 3 years of non-use. No memory effect, can be charged anytime whenever needed

• \u3010Safe & Fast charging \u3011 It only takes 1.5 hours to be fully charged - The led indicator shows red when charging, blue when fully charged; The USB Rechargeable 9v Batteries come with 2 in 1 usb cables, freely charged by adapter, power bank, car charger ect.

• \u3010Economic & Eco Friendly \u3011The Rechargeable 9V Li-ion Batteries are lithium polymer batteries, which relatively improves the problem of battery leakage. Batteries can be recharged up to 500 times at minimal power loss, saving you from the constant need to buy single-use alkaline batteries, Perfectly replace of dry battery and ordinary rechargeable battery. which is economical and environmentally friendly ideal.

• \u3010Widely Compatibility\u3011Suitable for wireless microphone, wireless video game controllers, electronic toys, smoke/fire alarms, metal detector, remote controller detector, electric guitar, professional audio, paintball guns, GPS, LED lighting devices, walkie-talkie, multimeter, home security devices, medical devices etc.

• \u3010Warming Tips & Customers Service\u3011Please charge fully before use, as we only charge the battery to 35% for safety delivery. Batteries will reach top performance after 3-5 times fully charger cycle. We provide customer service 24 x 7 email support, if you have any question, please feel free to contact us.