Looking for 4s 15a 18650? 4S 15A 18650 Lithium Battery Protection Board is available at Zbotic with fast shipping across India.
Description:
Battery protection board, as the name suggests battery protection board is mainly rechargeable (Refers to the lithium battery) and protects the integrated circuit board. As the lithium battery, its material determines itself can not be overcharge, over-discharge, overcurrent, short circuit, and ultra-high temperature charge and discharge, so lithium battery lithium components will always follow A protective plate with sampling resistor, and a current fuse.
Providing all above features this 4S BMS board can combine 4 x 18650 battery to form a battery pack to provide up to 15V DC output at 15A current which can be used for heavy applications.
Note: Product Image May vary from actual product in terms of Model name and labels printed
Features:
- Overcharging and Over Discharging Protection
- Short circuit protection: Yes
- Applicable assembly: Nominal 3.7V Batteries / 4 strings.
Specification:
| Item Type: | Battery Management System |
|---|---|
| Voltage Rating (V): | 14.8 |
| Current Rating (A): | 15 |
| Battery Cell Composition: | 4S |
| Model No.: | HX-4S-D20 Rev 1.1 |
| Charge Voltage (V) | 16.8V |
| Additional Specs.: | Over-discharge recovery voltage: 2.5v ± 0.05v, Over-Discharge-Delay-Time: 144ms Maximum Working Current: 10A Maximum Peak current: 15A |
| Static Current | Less than 8uA |
| Resistance | Less than 4mΩ |
| Length (mm): | 35 |
| Width (mm): | 35 |
| Weight (g): | 6 |
Package Includes:
- 1 x 4S 15A 18650 Lithium Battery Protection Board
4S 15A 18650 Lithium Battery Protection Board Overview
The 4S 15A 18650 Lithium Battery Protection Board is a 4-cell series BMS designed to safeguard 18650 lithium-ion cells against overcharge, over-discharge, short circuits and overcurrent. It combines four 3.7V cells into a 14.8V pack capable of delivering up to 15A continuous current for heavy-duty applications.
Key Features of 4S 15A 18650 Lithium Battery Protection Board
- Overcharge and over-discharge protection to extend cell life
- Short circuit and overcurrent cut-off at 15A load
- Integrated balancing circuit for uniform cell voltage during charge
- Thermal protection against high temperature conditions
- Compact PCB design fitting standard 4×18650 battery holders
- Genuine product with fast shipping from Zbotic across India
Applications and Use Cases
- DIY power banks and portable chargers
- Battery packs for electric scooters and e-bikes
- Backup power for CCTV and security systems
- Energy storage in small solar lighting setups
- RC vehicles and hobby robotics projects
- LED lighting arrays and portable audio systems
How to Use 4S 15A 18650 Lithium Battery Protection Board
Connect each 18650 cell to the board—ensuring correct series orientation—attach the B- and P- terminals to your charger or load, then secure the board within your battery pack enclosure. Ensure all connections are tight and insulated before charging or drawing current to allow the BMS to monitor and balance the cells automatically.
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
What battery configuration does the 4S 15A BMS support?
This protection board is designed for a 4S configuration using four 18650 lithium-ion cells in series, providing a nominal 14.8V pack voltage. Ensure each cell is of the same capacity and state of charge before assembly.
How does the board protect against overcurrent and short circuits?
When load current exceeds 15A or a short circuit is detected, the BMS instantly cuts off output to prevent damage. It automatically resets once the fault condition clears and the pack voltage returns to safe levels.
Does the BMS require a separate balance charger?
No separate balance charger is needed; the built-in balancing circuit equalizes cell voltages during charging by diverting excess current from higher-voltage cells, ensuring safe and uniform charging across all four cells.
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Read More →Technical Specifications
| Current Rating | 15A |
|---|---|
| Cell Configuration | 4S |
| SKU | AI3183 |
| Weight | 0.01 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 4S 15A 18650 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
