Pebble PZ-12 Rugged Portable PD Power Bank, 10,000mAhCompact yet powerful 10,000mAh capacity High performance WYG 21700 li ion cells Rugged splash resistant chassis 20W fast charging The Veho Pebble PZ 12 Rugged power bank uses WYG high performance 21700 Li on cells. The cells are 40% more energy efficient than traditional power banks allowing PZ 12 to have a smaller form factor. The 20W fast charging, via the PD universal USB C charging port, will charge most portable devices with up 12V output (all