It’s a 4V 500mAh Sealed lead Acid Rechargeable battery. This battery is an advanced and cost-effective rechargeable battery. These batteries are widely used in bike‚ boat‚ automobile systems‚ IoT‚ GPS‚ DVD players‚ and other DIY‚ and industrial applications. The high-impact resistant battery case is made of non-conductive ABS plastic‚ and all of these materials provide excellent resistance to shock‚ vibration‚ chemicals‚ and heat. Features: Its Nominal Voltage is 4V Rechargeable‚ recyclable‚ and no memory effect. Maintenance-free with a long service life Its capacity is 0.5Ah (500mAh) Specifications Battery Type Sealed Lead Acid Battery Origin India Type Rechargeable battery Capacity 500mAh Operating Voltage 4V