The Nokia BL-5J Battery is a high-quality 1320mAh internal battery designed specifically for Nokia devices such as the 5228, 5230, 5800, C3, N900, X6, and Lumia 520/530. With a voltage of 3.7V and rigid plastic material construction in black colour, this battery is compatible with Nokia 5230 models and comes with 3 ports for easy charging. It does not include a cable length but offers reliable power for your mobile phone needs.
eBay