This is the 18V variant of the 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Board for 18V 21V Battery in Battery Protection Board. Available at ₹231.14 (₹195.88 + GST) with free shipping across India.
Looking for 5s Board? 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Board for 18V 21V Battery is available at Zbotic with fast shipping across India.
PRODUCT DESCRIPTION
This is 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Board for 18V 21V Battery. It ensures the security of the battery pack.
Connection Diagram of 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Board for 18V 21V Battery
Features:
- Single section power consumption since: 30 μA
- Power consumption between single section: 3 μA
- Single section over charging sensing voltage: 4.18- / 4.22V
- Over-charging recovery voltage: 4.05-4.15V
- Overcharge detection delay: 0.5 / 1.0 / 2.0S
- Single section discharge detection voltage: 2.75-2.85V
- Over discharge recovery voltage: 2.90-3.20V
- Discharge detection delay: 0.5-2.0S
Specification:
| Charging voltage (V) | 21 |
|---|---|
| Charging MOS pressure value (V) | 35 |
| Discharge MOS pressure value (V) | 35 |
| Charging current (A) | 56 |
| Continuous discharge current (A) | 15 |
| Over current protection (A) | 50/55/60 |
| Over current protection delay (mS) | 20/25/30 |
| Shipping Weight | 0.004 kg |
| Shipping Dimensions | 8 × 3 × 3 cm |
Package Includes:
1 x BMS Charger Protection Board
1 x Connector Cable
5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Overview
This 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection board is designed to safeguard and manage 5-cell (18V nominal, 21V max) battery packs built with 18650 cells. It monitors individual cell voltages, enforces balanced charging and prevents over-charge, over-discharge and over-current conditions to extend battery life and ensure safe operation.
Key Features of 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection
- Supports 5-cell 18650 packs up to 21V charging voltage and 15A continuous discharge
- Adjustable over-current protection at 50/55/60A with 20/25/30 ms trip delay
- Accurate cell thresholds: over-charge detection at 4.18–4.22V, recovery at 4.05–4.15V; discharge cutoff at 2.75–2.85V, recovery at 2.90–3.20V
- Ultra-low quiescent draw: 30 µA per cell and 3 µA between cell groups
- High charge current capability: up to 56A for rapid pack charging
- Genuine product, fast shipping from Zbotic across India
Applications and Use Cases
- Custom 18V battery packs for cordless drills, saws and other power tools
- Battery management in electric scooters, e-bikes and hoverboards
- Portable power stations, UPS systems and off-grid solar energy storage
- RC models, drones and robotics projects requiring 5-cell Li-ion packs
- DIY battery backup solutions for networking equipment and emergency lights
How to Use 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection
Mount the board onto your welded or spot-welded 5S 18650 cell stack by connecting each cell’s positive tap to the corresponding B1–B5 pads and the negative end to B–. Wire your charger and load to P+ and P– terminals. Confirm proper cell sequencing before initial power-up. The board will automatically balance cells during charge and disconnect on fault conditions.
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 voltage range does this BMS support?
This board is tailored for 5S Li-ion configurations, covering a nominal pack voltage of 18V and charging up to 21V maximum.
Can I discharge at 15A continuously without triggering protection?
Yes. The BMS allows up to 15A continuous discharge. If current exceeds the selected over-current threshold (50/55/60A), it will disconnect within 20–30 ms.
How does the BMS recover after an over-discharge event?
When the pack voltage falls below 2.75–2.85V per cell, the BMS cuts off output. It will automatically reconnect once each cell voltage rises back above 2.90–3.20V during recharge.
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Read More →Technical Specifications
| Voltage Range | 18V - 21V |
|---|---|
| Current Rating | 15A |
| Cell Configuration | 5S |
| SKU | AI3446 |
| Weight | 0.01339 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 5S 15A 18650 Li-ion Lithium Battery BMS Charger Protection Board for 18V 21V Battery 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
