4S 5A BMS NMC18650 Lithium Battery Protection Board
- This 4S 14.8V 10A Lithium battery Protection Board comes with over-charge, over-discharge, over-current and short circuit protection, for a variety of various shapes 3.7V lithium-Ion batteries. HX-4S-A01 is Small size, suitable for many requirements of high integration, low cost of the occasion, to meet a wide range of performance requirements to ensure that the battery pack is absolutely safe and reliable.
Features:
- This protection board is suitable for 4 series Li-ion cell
- Adopt a precision integrated circuit for fast and safe charging
- Support overcharge protection, over-discharge protection, and short circuit protection
- This product has gone through load and ageing test for quality assurance
Applications:
- Small power inverter
- Massager battery pack
- LED lamp backup power
- Electronic products
- Solar street lamp battery pack
- Monitoring standby power supply
Package Includes:
- 1 x 4S 5A BMS NMC18650 Lithium Battery Protection Board
4S 5A BMS NMC18650 Lithium Battery Protection Board Overview
The 4S 5A BMS NMC18650 Lithium Battery Protection Board is a compact battery management system designed for 4-cell 3.7 V lithium-ion packs (NMC18650). It delivers over-charge, over-discharge, over-current and short-circuit protection to ensure safe operation and long service life for your 14.8 V battery assemblies.
Key Features of 4S 5A BMS NMC18650 Lithium Battery Protection Board
- Compatible with four series NMC18650 Li-ion cells in a 14.8 V configuration
- Precision integrated circuit for fast, safe charging and cell balancing
- Built-in over-charge, over-discharge, over-current and short-circuit protection
- Supports up to 5 A continuous charge and discharge current
- Compact, low-cost design with load and ageing tests for quality assurance
- Genuine product with fast shipping from Zbotic
Applications and Use Cases
- DIY e-bike and electric scooter battery packs using 18650 cells
- Portable power banks and UPS systems requiring 14.8 V modules
- Solar energy storage modules and off-grid battery arrays
- RC vehicles, drones and model aircraft power management
- LED lighting fixtures and portable work lights with rechargeable packs
How to Use 4S 5A BMS NMC18650 Lithium Battery Protection Board
Mount the BMS board inside your battery enclosure and connect the four cell terminals (B-, B1, B2, B3, B+) to each cell group in correct sequence. Attach your pack’s main positive and negative leads to P+ and P– (or C+ and C– for charging). Verify wiring polarity, secure all connections, then perform an initial charge cycle to balance cells and confirm protection functions.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
Which cell chemistry is this BMS designed for?
This board is optimized for NMC18650 lithium-ion cells in a 4-series (14.8 V) configuration, but can work with any similarly rated 3.7 V Li-ion cells.
What current limits does it support?
The BMS provides up to 5 A continuous charging and discharging current, with built-in over-current protection to prevent damage from excessive loads.
How are protection functions activated?
All protection features—over-charge, over-discharge, over-current and short circuit—are managed automatically by the onboard precision IC. Faults reset once cells return to safe voltage/current conditions.
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Read More →Technical Specifications
| Current Rating | 5A |
|---|---|
| Cell Configuration | 4S |
| SKU | AI1054 |
| Weight | 0.0091 kg |
| Availability | In Stock |
Applications & Use Cases
The 4S 5A BMS NMC18650 Lithium Battery Protection Board is a versatile battery protection board used across a wide range of applications including lithium battery pack protection, power bank builds, e-bike battery management, solar energy storage, and UPS systems.
Common use cases:
- Building a custom lithium battery pack
- Adding overcharge/overdischarge protection
- Creating a DIY power bank
This product is ideal for battery pack builders and power electronics engineers.
Technical Tip: BMS boards prevent overcharge, overdischarge, overcurrent, and short circuit. Match cell count (S) and max current rating to your battery pack.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Ananya Grewal (verified owner) –
Superb 4S 5A BMS NMC18650 Lithium Battery! Efficiency is high and it runs cool even under load.
Anjali Dhillon (verified owner) –
Okay 4S 5A BMS NMC18650 Lithium Battery. Output is slightly off from specified but within usable range.
Sahil Goyal (verified owner) –
Great 4S 5A BMS NMC18650 Lithium Battery. Voltage is rock solid under varying loads. Highly recommended.
Akash Kapoor (verified owner) –
Outstanding! This 4S 5A BMS NMC18650 Lithium Battery supplies clean power to my sensitive circuits. No noise at all.
Varun Trivedi (verified owner) –
Excellent 4S 5A BMS NMC18650 Lithium Battery! Output is stable and reliable. Perfect for my electronics project.
Rajesh Nayak (verified owner) –
Excellent 4S 5A BMS NMC18650 Lithium Battery! Output is stable and reliable. Perfect for my electronics project.
Sneha Deshpande (verified owner) –
Excellent 4S 5A BMS NMC18650 Lithium Battery! Output is stable and reliable. Perfect for my electronics project.
Ankit Panchal (verified owner) –
Outstanding! This 4S 5A BMS NMC18650 Lithium Battery supplies clean power to my sensitive circuits. No noise at all.
Sandeep Krishnan (verified owner) –
Bought multiple units of this 4S 5A BMS NMC18650 Lithium Battery. All consistent quality. Zbotic is reliable.
Ojas Thakur (verified owner) –
Good 4S 5A BMS NMC18650 Lithium Battery. Output is stable. Gets slightly warm under full load but nothing concerning.
Naman Singh (verified owner) –
Outstanding! This 4S 5A BMS NMC18650 Lithium Battery supplies clean power to my sensitive circuits. No noise at all.
Jayesh Kapoor (verified owner) –
Outstanding! This 4S 5A BMS NMC18650 Lithium Battery supplies clean power to my sensitive circuits. No noise at all.
Utkarsh Gupta (verified owner) –
Decent 4S 5A BMS NMC18650 Lithium Battery. Voltage output is accurate. Compact form factor is a plus.
Aditya Kulkarni (verified owner) –
This 4S 5A BMS NMC18650 Lithium Battery is reliable and efficient. Running my IoT setup 24/7 with no issues.