AmpereX
Battery DatasheetEnergy CenterUse Cases
Featured

HBJ 3S 40A Hardware BMS for 12V Li-ion Batteries

View more HBJ products

SKU: HBJ-3S-40A

PKR 2,999

In Stock15 in stock
  • Genuine productVerified stock
  • Fast dispatchNationwide delivery
  • Technical supportExpert guidance
  • Warranty supportAmpereX backed
SpecialistBulk pricing
New Arrival

1 Year warranty included

Key specifications

Voltage

11.1V

Capacity

40A

Type

Li-ion

Category

HBJ BMS

Warranty

1 Year

Brand

HBJ

Overview

What it is: HBJ 3S 40A hardware BMS for 12V Li-ion battery packs - 40A continuous discharge with overcharge, over-discharge, overcurrent, short-circuit and temperature protection.

Who it's for: Ideal for installers, integrators, and end users who need a verified 11.1V, 40A, Li-ion component for Hardware BMS in Pakistan.

  • Genuine stock with traceable SKU and published specifications
  • Pre-sales compatibility guidance from AmpereX specialists
  • 1 Year warranty support through AmpereX

Product description

The HBJ 3S 40A Hardware BMS is designed for 3S lithium-ion battery packs built from 3.7V nominal cells, forming a 12V-class system for general-purpose power applications. With 40A continuous discharge, it has the headroom for demanding sustained loads - portable power stations, 12V backup packs, cordless power tools, small e-mobility builds and DIY battery projects - while staying compact and simple to wire. The hardware-based design keeps protection logic on the board itself, with no app, Bluetooth or programming required. Protection covers overcharge, over-discharge, overcurrent, short circuit and abnormal temperature, disconnecting the pack before cells are stressed and reconnecting once conditions return to normal. High-current power connections and durable construction keep heat and voltage drop low under continuous load. A 3S Li-ion pack is 11.1V nominal and charges to 12.6V, which places it in the 12V class. This board is rated for continuous load rather than engine starting; for self-start motorcycles and generators that need a 300A cranking surge, the HBJ 3S 50A starter BMS is the right choice. It is Li-ion only and must not be used with LiFePO₄ packs.

Specifications

19 technical data points grouped for quick scanning

Voltage
11.1V
Capacity
40A
Cell Configuration
3S
Nominal Voltage
11.1 V
Charge Cut-off Voltage
12.6 V
Discharge Cut-off Voltage
8.25 V
Continuous Discharge Current
40 A

Protection
Overcharge, Over-discharge, Overcurrent, Short circuit, Temperature protection

Key features

Why customers choose AmpereX for this product

AmpereX supplies reliable, quality-checked Li-ion products in Pakistan — not just a listing, but verified stock with clear specifications, responsive support, and warranty options you can trust.

  • Authentic products from trusted brands with traceable SKUs
  • Quality-focused sourcing suited to Pakistani power conditions
  • Pre-sales guidance to match voltage, capacity, and application
  • After-sales support, warranty assistance, and replacement help

This 11.1V · 40A · Li-ion unit is listed for Hardware BMS with full technical details below.

Compatibility & related links

Explore related categories, brand ranges, and alternative products.

FAQs

Common questions about HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board, availability in Pakistan, and buying from AmpereX.

What is the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board?
HBJ 3S 40A hardware BMS for 12V Li-ion battery packs - 40A continuous discharge with overcharge, over-discharge, overcurrent, short-circuit and temperature protection.
Who should buy the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board?
This product suits buyers who need a dependable 11.1V, 40A, Li-ion solution for Hardware BMS use in Pakistan. AmpereX helps you verify compatibility with your inverter, UPS, solar setup, or vehicle before purchase.
Is the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board available in Pakistan through AmpereX?
It is currently shown as in stock on AmpereX.pk. Confirm final availability and delivery timing on WhatsApp or by phone before ordering. AmpereX delivers battery products nationwide and provides product guidance in English and Urdu-friendly support channels.
Why buy the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board from AmpereX instead of an unknown seller?
AmpereX focuses on genuine products, transparent specifications, and ongoing customer support — including help choosing the right model, warranty coordination, and after-sales assistance. You get a specialist battery supplier, not just a one-time transaction.
What warranty comes with the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board?
This listing includes 1 Year warranty coverage as stated on the product page. AmpereX supports warranty claims and can advise on proper use, charging, and maintenance to protect product life.
What are the key specs of the HBJ 3S 40A Hardware BMS - 12V Li-ion Protection Board?
Key published specs include 11.1V voltage and 40A capacity (Li-ion). See the specifications table on this page for complete technical data before ordering.