MEAN WELL NPB-450 Series 450W High Reliable Ultra Wide Output Range Intelligent Battery Charger User Manual

MEAN WELL Suaicheantas

Sreath NPB-450


  • Patented auto ranging with ultra-wide charging voltage (10.5~21V,21~42V,42~80V, 54~100V; Please refer to page 8 for setting)
  • Built-in CANBus protocol for control, setting and monitoring
  • Programmable 2/3 stage and charging curve via SBP-001
  • Manual setting for 2/3 stage and 4 built-in charging curves via DIP S.W
  • Multiple protections:
    Short circuit / Over voltage / Over temperature/ Battery under voltage/ Battery reverse polarity (No damage)
  • Charger OK and Battery Full signal
  • Temperature compensation function to prolong battery life (Lead-acid only)
  • -30°C~+70°C wide operating temperature
  • Thermal controlled DC fan for noise reduction
  • Smachd iomallach ON / OFF
  • Smart programmer available (Order NO.: SBP-001, sold separately)
  • Carry handle accessory available(Order NO.: DS-Carry handle, sold separately)
  • Comply with 62368-1 + 60335-1/-2-29 dual certification
  • Suitable for lead-acid (Pb) and li-ion batteries
  • Barantas bliadhna 3


  • AGV
  • E-Bike, E-Scooter, Camping car, Bus, Specialty vehicles
  • Inneal gearraidh feòir robotach
  • Washing robot
  • Recreation craft, Personal yacht or workboat
  • Siostam sgrùdaidh
  • Telecommunication base station
  • Fuasgladh cùl-taic siostam rèidio
  • Equipments or instruments with backup battery


NPB-450 is a miniaturized, versatile, and ultra-wide voltage intelligent charger. It utilizes a fully digital control design with patented automatic battery voltage detection technology, with five key features including intelligent, versatile, user friendly, safe, and compact. The series have four models with output voltage ranges of 10.5~21V, 21~42V, 42~80V, and 54~100V respectively. The charging voltage range of each model is wide enough to cover a variety of different battery voltages and battery chemistries, and there is a built-in intelligent voltage detection charging mode (Note this mode is set to OFF by factory default and is suitable for lithium batteries with BMS only). The NPB-450 can pair with MEAN WELL’s SBP-001 programmer for digital configuration, such as select 2/3 stage charging, adjust charging voltage/current, and set charging cycle time to protect battery lifetime. Through the user-friendly DIP S.W. on front panel, user may also directly adjust the 2/3 stage charging, current (50~100%), and select between the 4 types of preset charging curves. In addition, a CANBus communication protocol is built in to meet professional applications, which allows remote controlling and monitoring for the status of the charger. In terms of safety, it has intelligent detection for proper battery voltage and connection as well as protection from reverse polarity. It passes ITE IC/EN/UL62368-1 and household appliances EN60335-1/-2-29 dual safety and 3-year warranty to guarantee reliable operation. The NPB-450 is truly an intelligent, safe, and reliable universal charger with outstanding cost performance.

Còdachadh Modail



Sònrachadh a ’leantainn

Diagram Bloc

Fosc PFC: 80KHz
Fosc PWM: 60KHz

Diagram Bloc

Currac Derating

Currac DeratingDerating Curve Continued

Feartan statach

Feartan statach

Leabhar-làimhe gnìomh

1. Suidheachadh làimhe

Suidheachadh làimhe

1.1 2 no 3-stage selectable tro DIP SW air a’ phannal

2 no 3-stage selectable via DIP S-W on panel

1.2 Charging curve can be adjustable via DIP S.W on panel

Charging curve can be adjustable via DIP S-W on panel

  • The default curve is programmable, whereas other pre-defined curves can be activated by the means of the DIP S.W; This series provides 2 or 3 stage charging curve please refer to the table below and the Mechanical Specification.

Charging curve can be adjustable via DIP S-W on panel continued

2. Programmable charging curve

Faodar Curve Cìsean a shuidheachadh tro SBP-001 le coimpiutair

ceum 1

Rèiteachadh bathar cruaidh

Rèiteachadh bathar cruaidh

ceum 2

Connect to software for setting

Connect to software for setting

Connect to software for setting continued

Tuairisgeul gnìomh:

SBP-001 is a programmer, particularly for MEAN WELL’s various programmable battery charger models to program the parameters of charging curves, such as the 2 or 3 stage selectable, Constant current (CC), tapper current(TC), Constant voltage (CV), fleòdradh voltage (FV),Charging time out and so on, to accommodate the diversified battery specification in industry. With the design accounting for simplicity and convenience, users can easily configure MEAN WELL’s programmable battery chargers with SBP-001 programmer and the computer; all of the setups are able to be finished easily by the means of the specific software.
Note:(1) Tapper current(TC) default is 10%, can be fine tuned from 2% to 30% by SBP-001 with computer or CANBus Interface.
(2) Please contact MEAN WELL for more details.

※ Software Interface:

Eadar-aghaidh Bathar-bog

3. Auto Ranging airson Cìsean (Default neo-auto raon)

※ Function Description:

a. NPB-450 has built-in auto ranging mode.
(Note this mode is set to OFF by factory default and is suitable for lithium batteries with BMS only)

b. When operating in auto ranging mode , NPB-450 will automatically detect the voltage de bhataraidh a tha ceangailte agus atharraich cosgais voltage a rèir sin. Cha tòisich e a’ cur cosgais air aonad bataraidh iomchaidh voltaglorgar e.

c. While under auto ranging mode, NPB-450’s built-in MCU will adjust charging voltage. Chan eil potentiometer ann airson voltage adjustment on the front panel.

d. While under auto ranging mode, the charging current can be adjusted between 50~100%. (The charging current can not be adjusted via potentiometer while not operating in auto ranging mode)

※ When using the auto ranging charging curve function, please pay attention to the following:

Input-Output Side

  1. Default factory setting is OFF via DC output side DIP S.W, Follow steps A1~A6 below to enable the setting.
  2. Auto ranging function should use together with Lithium batteries and BMS (Battery Management System).
  3. Do not exceed the output voltage agus raointean gnàthach mar a tha air an sònrachadh ann an sònrachaidhean NPB-450 (thoir sùil air duilleag 2).

※ Auto Ranging function by DIP S.W Setting

Auto Ranging function by DIP SW Setting

※ Back to non-auto ranging as following:

Non-auto ranging

4. Auto Derating function

※ Covered by over temperature protection, auto de-rating function works under operation either in charging curve (2 or 3 stage) no fo smachd protocol conaltraidh (CANBus).

T1(Typ.): Maximum ambient temperature of 100% output current.
T2(Typ.): T1+5℃.

Auto Derating function

5. CANBus communication interface

CANBus 2.0B version, Can control, setting and monitoring that including output charging voltage, output charging current, internal temperature and DC output ON/OFF……and so on, please refer to the leabhran luchd-cleachdaidh airson tuilleadh fiosrachaidh.

CANBus communication interface

CANBus communication interface continued

6. Charger OK Signal

Charger OK signal is a TTL level signal.
The maximum sourcing current is 10mA.

Charger OK Signal

7. Battery Full Signal

Battery full signal is a TTL level signal.
The maximum sourcing current is 10mA.

Battery Full Signal

8. Smachd iomallach ON-OFF

The NPB-450 can be turned ON/OFF by using the “Remote Control” function.

Smachd iomallach ON-OFF

※ The charger is shipped, by factory default, with Remote ON-OFF(pin 7) and +12Vaux (pin 8) shorted by connector.

Remote ON-OFF Control continued

9. Temperature compensation (3 stage a-mhàin)

Temperature compensation function to prolong battery life for lead-acid batteries. Temperature compensation range is 0 ~ 40℃.
The battery temperature sensor comes along with the charger can be connected to the unit to allow temperature compensation of the charging voltage.
Mura tèid an sensor a chleachdadh, bidh an charger ag obair gu h-àbhaisteach.

Airgead-dìolaidh teothachd

10. Comharran LED Taobh Toraidh DC & Comharra Co-fhreagarrach aig prìnichean gnìomh

DC Output Side LED Indicators

Sònrachadh Meacanaigeach

※ Intelligent Battery Charger model

Modail charger bataraidh tùrail



※ Control Pin No. Assignment : HRS DF11-14DS or equivalent

Control Pin No Assignment

※ LED Status Table

Clàr Inbhe LED

※ Connector Pin No. Assignment : HRS DF11-14DS or equivalent

Connector Pin No Assignment

Gnìomh prìne

Note1: Non-isolated signal, referenced to [GND(signal)].
Note2: Isolated signal, referenced to GND-AUX

Liosta accessory

※ NTC Sensor and Remote Control mating along with NPB-450 (Standard accessory)

Liosta accessory

※ Carry handle (Optional accessory, battery charger and pull handle should be ordered seperately)

Accessory List Continued 1

Accessory List Continued 2

Stiùireadh Stiùireadh

Feuch an toir thu sùil air:

Sgrìobhainnean / Goireasan

MEAN WELL Sreath NPB-450 450W Àrd-earbsach Ultra Wide Raon Toradh Bataraidh tùrail [pdf] Leabhar-làimhe stiùiridh
Sreath NPB-450, 450W Àrd earbsach Raon Toraidh Ultra Wide Charger Bataraidh Inntleachdail, Sreath NPB-450 450W Raon Toraidh Àrd earbsach Ultra Wide Charger Bataraidh Inntleachdail


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