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Tech Note | Lead-Acid Batteries and Ripple Voltage and Current. Is There a Problem?

Introduction

First of all, a definition. 

Ripple is the AC component of a system’s charging voltage imposed on the DC bus. It can also be reflected from load equipment. It could be caused by poor charger design, poor inverter design, failing capacitors, or by the interaction of load equipment connected to the DC bus. The result is a ripple current flowing into the battery. The amplitude of the ripple is primarily the result of the rectifier/charger design, charger output filtering, and the type and magnitude of the load placed in parallel with the battery.

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