This guide is applicable to lead-acid batteries that are used as the energy storage component in remote hybrid power supplies. The remote hybrid application, with its dual generator option, i.e., both renewable and dispatchable generation, is advantageous in that the battery can usually be charged at will and under circumstances that may also be advantageous for the dispatchable generator.

This guide provides rationale and guidance for operating lead-acid batteries in remote hybrid power systems, taking into consideration system loads and the capacities of the system’s renewable-energy generator(s), dispatchable generator(s), and battery(s). It also provides guidance for selecting an appropriate lead-acid battery technology for various system operating strategies.

Using the information provided in this guide, the performance and life of the lead-acid battery can be optimized for the particular operational strategy selected for the remote hybrid power system. The information provided is intended for use by remote hybrid system designers, system evaluators, owners, and operators.