Astell & Kern AK300 AK320 AK380 Portable Audio Player Battery - 3.7V 4000mAh

Introducing a high-quality rechargeable lithium-polymer battery from G.E.S, designed to power a range of devices including Astell & Kern AK300, AK320, and AK380 portable audio players. This battery boasts a capacity of 4000mAh and a voltage of 3.7V, providing long-lasting power for your device. With a cycle life of 300-500, this battery is perfect for both high and low drain devices and is suitable for use in communication, office, and portable settings. It features a discharge rate of 0.2C (1C max) and a charge rate of 1C (1C max), ensuring fast and efficient charging. This unit comes with a battery size of 6*43*76mm and is manufactured in China.