CTA DIGITAL DBLI63 Replacement Battery for Pentax DLI63 CTA DIGITAL DBLI63 Replacement Battery for Pentax DLI63. The highcapacity CTA DBLI63 850mAh rechargeable lithiumion battery is a replacement battery for the Pentax DLI63 battery.It features lithium technology, which ensures maximum battery life and maximum power. This enables consistent high speed shooting, more flash shots, image review and playback. It also features no memory effect letting you recharge partially drained batteries without reducing performance. This battery is designed to meet or exceed OEM specifications and it is 100percent compatible with the original equipment chargers.