MEAN WELL NPB-450-12 Battery Charger, 12 V battery, 25 A

At a glance

Battery Charging Voltage: Boost 14.4 V, float 13.8 V (default)
Charging Current: 25 A max.
Recommended Battery Capacity: 90 to 300 Ah
Battery Type: Lead acid and Li-ion
Input Voltage Range: 90 to 264 V AC
Rated Output Power: 420 W max

Model NPB-450-12Current model

MEAN WELL NPB-450-12 Battery Charger, 12 V battery, 25 A

Price on request

At a glance

Battery Charging Voltage: Boost 14.4 V, float 13.8 V (default)
Charging Current: 25 A max.
Recommended Battery Capacity: 90 to 300 Ah
Battery Type: Lead acid and Li-ion
Input Voltage Range: 90 to 264 V AC
Rated Output Power: 420 W max

Charges lead-acid or lithium battery banks that back up surveillance systems, telecom base stations, radio systems and other equipment. Battery charger, 12 V battery, 25 A. Auto ranging with wide charging voltage range.

Part of the MEAN WELL NPB-450 series. Compare all 5 models

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WarrantyManufacturer warranty under MEAN WELL's terms: 3 years. Warranty claims
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Overview

What it is

The MEAN WELL NPB-450-12 is a battery charger from the NPB-450 series (450 W High Reliable Ultra Wide Output Range Intelligent Battery Charger), rated 12 V battery, 25 A.

What it is used for

Charges 12 V lead acid or lithium battery banks, for example the backup batteries of surveillance, telecom and radio systems; the charging curve can be set on the panel, through CANBus or with the SBP-001 programmer. MEAN WELL lists applications such as surveillance systems, telecommunication base stations, radio system backup, equipment or instruments with backup battery.

Key features

Auto ranging with wide charging voltage range.
Built-in CANBus protocol for control, setting and monitoring.
Programmable charging curve via SBP-001 programmer.
Manual setting of 2 or 3 stage and 4 built-in charging curves via DIP switch.
Protections: short circuit, over voltage, over temperature, battery under voltage, battery reverse polarity (no damage).
Charger OK and battery full signals; temperature compensation for lead acid batteries.

Key Specifications

Battery Charging Voltage: Boost 14.4 V, float 13.8 V (default).
Charging Current: 25 A max. (constant current), adjustable 50 to 100% by potentiometer in auto ranging mode.
Recommended Battery Capacity: 90 to 300 Ah.
Battery Type: Lead acid (flooded, gel, AGM) and Li-ion (lithium iron, lithium manganese).
Input Voltage Range: 90 to 264 V AC; 127 to 370 V DC (derating may be needed at low input voltage).

Buying considerations

Size the unit with headroom above the connected load and check the derating information in the datasheet for high ambient temperature or low input voltage. Other models in the same series are listed on this page.

Installation considerations

MEAN WELL treats this unit as a component of the final equipment, so approvals and EMC performance should be confirmed for the complete installation. Wiring and safety details are in the official datasheet linked below.

Features

MEAN WELL NPB-450-12 Battery Charger, 12 V battery, 25 A, dimension drawing — Check the datasheet for tolerances.

Size and fit

Dimensions: 205 x 135 x 55 mm (L x W x H)
Weight: 1.38 kg

Technical specifications

Key facts

What is it?: Battery chargerBrand MEAN WELL, model NPB-450-12
What does it output?: 25 A, 420 W max
What input does it accept?: 90 to 264 V AC
Which documents are available?: Datasheet, certificate, software Open documents

Output

Battery Charging Voltage: Boost 14.4 V, float 13.8 V (default)
Charging Current: 25 A max. (constant current), adjustable 50 to 100% by potentiometer in auto ranging mode
Rated Output Power: 420 W max.
Efficiency (typ.): 92%
Rated Output Current: 25 A (charging, CC max.)

Input

Input Voltage Range: 90 to 264 V AC; 127 to 370 V DC (derating may be needed at low input voltage)
Power Factor: PF >0.98 at 115 V AC; PF >0.95 at 230 V AC (full load)
Battery Type: Lead acid (flooded, gel, AGM) and Li-ion (lithium iron, lithium manganese)
Input Frequency Range: 47 to 63 Hz

Protection

Withstand Voltage: I/P-O/P: 3 kV AC; I/P-FG: 2 kV AC; O/P-FG: 0.5 kV AC

Environment

Temperature Compensation: By external NTC
Cooling: Thermally controlled DC fan
Operating Temperature: -30 to +70 °C (refer to derating curve)
Operating Humidity: 20 to 95% RH non-condensing

Physical

Dimensions: 205 x 135 x 55 mm (L x W x H)
Weight: 1.38 kg

Approvals

MTBF: 821.0K hrs min. Telcordia SR-332 (Bellcore); 83.4K hrs min. MIL-HDBK-217F (25 °C)

Other

Charge Voltage Range: 10.5 to 21 V (programmable via SBP-001)
Recommended Battery Capacity: 90 to 300 Ah
Charging Curve: 2 or 3 stage selectable by DIP switch; CC, TC, CV and FV programmable
Communication: CANBus 2.0B
Alarm Signals: Charger OK and Battery Full TTL signals
Series: NPB-450

Warranty: Manufacturer warranty under MEAN WELL's terms: 3 years. How claims work

Product attributes and shipping details

Brand	MEAN WELL
Power Output	420 W

Downloads

Download software

Smart Battery Charging Program SoftwarePublicVersion V1.6 · Windows 7, Windows 10; .NET Framework 4.0+Prerequisites: SBP-001 programmer and correct SBP cable (#1 to #4); Charging curve programming needs the SBP-001 programmer (sold separately)Licence: FreeSoftware · Family · meanwell.com
View official download page

Documentation

NPB-450 series datasheetPublicDatasheet · Family · meanwell.com
Download

Certificate and compliance document (1)

NPB-450 CE declaration of conformityPublicCertificate · Family · meanwell.com
Download

Series documents can differ from your exact model. Report a wrong or missing file

Questions about this product

What input voltage does the NPB-450-12 accept?

MEAN WELL lists 90 to 264 V AC; 127 to 370 V DC (derating may be needed at low input voltage) for this model.

What battery charging does the NPB-450-12 provide?

The datasheet gives battery charging voltage Boost 14.4 V, float 13.8 V (default), charging current 25 A max. (constant current), adjustable 50 to 100% by potentiometer in auto ranging mode.

Ask about this modelSetup, compatibility, what is in the box

Downloads

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