Power-Sonic PDC-121300: 128Ah AGM Deep Cycle Battery for Reliable Off-Grid Energy Engineered for Sustained Deep Cycling in Caravans, Marine, and Mobility Applications The Power-Sonic 12V 128Ah AGM Deep Cycle Battery is purpose-built for applications demanding regular, deep discharges and reliable recharge cycles. Part of the PDC series, it features oversized negative plates and a specialised paste formulation that delivers consistent...