User manual

2 www.enersys.com
TM
Genesis
®
NP & NPX Battery Series Application Manual
Table of contents
Introduction 2
Technical Features 3
Applications 4
Battery Construction 4
General Specifications NP Series 5
Range Summary Layout Terminal Configurations 6
Battery Capacity Selection Charts 7
Discharge 7-9
Discharge Characteristics
Temperature Characteristics
Over-Discharge (Deep Discharge)
Storage, Self-Discharge, and Shelf Life 9
Self-Discharge
Shelf Life
Recharging Stored Batteries
Ohmic Readings 9
Charging 10-13
Constant Current Charging
Two Step Constant Voltage Charging
Charging Voltage
Initial Charge Current Limit
Refresh Charging
Temperature Compensation
Charging Efficiency
Solar Powered Charging
Service Life of Genesis
®
NP Batteries 13
Cyclic Service Life
Float Service Life
Tips & Precautions 14
Glossary 14-15
Limited Warranty 16
Publication No: US-NP-AM-003 • January 2011
Today’s Genesis
®
NP Battety series is
the culmination of more than ten
decades of battery manufacturing
experience. High energy density,
leak proof construction, excellent
performance in either float or
cyclic applications and long
service life combine to make the
Genesis NP Series the most
reliable and versatile maintenance
free rechargeable sealed lead acid
batteries available.
54153_US_NP_AM_003.qxp:NP AppManual 1/21/11 1:45 PM Page 2