Learn how to calculate battery capacity or battery size for your solar power system.

️Timestamps:
0:06 Introduction
0:53 — Why are batteries needed?
1:10 —Which batteries are available?
1:40 — What is the usable energy?
2:16 — What is the battery life?
3:06 How to assess your energy demand
5:57 How to estimate system losses
6:23 — efficiency there and back
7:07 — wiring losses
7:32 — conversion efficiency
8:20 How to calculate battery size
8:28 — select a battery voltage
10:44 — selected days of autonomy
11:51 — think about thermal losses
12:25 — specify the depth of discharge
13:42 — calculate the battery capacity
14:19 — calculate the number of batteries
15:14 Other videos and resources

For more information, visit: http://go.umd.edu/FarmSolar

Procedures for determining the performance of stand-alone photovoltaic systems. [https://www.nrel.gov/docs/fy99osti/27031.pdf]

IEEE Guide for the Characterization and Evaluation of Lithium-Based Batteries in Stationary Applications 1679.1-2017. [https://ieeexplore.ieee.org/document/8262521]

A voltage drop of more than 3% can result in cost versus performance benefits (solar cell arrays). [https://ieeexplore.ieee.org/document/169305]

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