NP4-12 EnerSys, NP4-12 Datasheet - Page 2

• Manufacturer Part Number: NP4-12
• Description: 12V/4AH SEALED LEAD ACID BATT
• Manufacturer: EnerSys
• Series: NPr

Specifications of NP4-12

• Voltage - Rated: 12V
• Capacity: 4.0Ah
• Size / Dimension: 3.54" L x 2.76" W x 4.21" H (90mm x 70mm x 107mm)
• Termination Style: Spade, .187" and .250" (4.7mm and 6.3mm)
• Rechargeability: Yes
• Brand/series: NP Series
• Chemical System: Lead Acid
• Dimensions: 90mmL×70mmW×106mmH
• Primary Type: Rechargeable
• Resistance, Internal: 40 Milliohms
• Size: Rectangular
• Temperature, Operating: -15 to +50 °C
• Temperature, Operating, Maximum: +50 °C (Charge), +60 °C (Discharge)
• Temperature, Operating, Minimum: -15 °C (Charge), -20 °C (Discharge)
• Termination: 0.187/0.25 Quick Disconnect Tab
• Voltage, Nominal: 12 V
• Voltage, Rating: 12 V
• Weight: 1.75 kg
• Lead Free Status / RoHS Status: Contains lead / RoHS compliant by exemption
• Other names: Q4855529

Today’s Genesis™ NP 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.
2
Genesis NP & NPX Series Application Manual
www.enersys.com
TM
Table of contents
Introduction
Technical Features
Applications
Battery Construction
General Specifications NP Series
Terminal Configurations
Battery Capacity Selection Charts
Discharge
Storage, Self-Discharge, and Shelf Life
Impedance
Charging
Service Life
Tips & Precautions
Glossary
Limited Warranty
Discharge Characteristics
Over-Discharge (Deep Discharge)
Self-Discharge
Shelf Life
Recharging Batteries in Storage
Temperature Characteristics
Constant Current Charging
Two Step Constant Voltage Charging
Charging Voltage
Initial Charge Current Limit
Top Charging
Temperature Compensation
Charging Efficiency
Solar Powered Charging
Cyclic Service Life
Float Service Life
Publication No: US-NP-AM-002 • June 2006
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