PRODUCT DESCRIPTION
A battery management system (BMS) monitors the status of batteries, controls their charging and discharging processes, and performs other functions. The HX-2S-D20 charge-discharge controller module can connect two 18650 batteries at the same time. It has short circuit, overcharge, and over-discharge protection. It also cuts off the power supply to the batteries when at least one of them reaches full capacity. This BMS controller can operate for more than 30,000 hours and has a maximum current of 20 A.
The HX-2S-D20 BMS module has 5 pins:B : Battery positive pole
B- : Battery negative pole
BM : Mid-point of a battery assembly
P- : Negative charge / discharge terminal
P :Positive charge/discharge terminal
If the maximum permissible value of the supply voltage is exceeded, the charge controller activates the “protection” mode. In order to restore the module, it is necessary to re-apply voltage to the input of the BMS board or wait a while until the charge controller automatically disables protection.
Power is supplied to the module from an external power source. The voltage range of the module is from 7.4 to 8.4 V. For charging, you can use a step-up voltage converter with a current limiter. Please note that this module is not a charger.
Features:
- Small size designed for a four-cell battery pack.
- Simple and convenient circuit for easy connections
- Over-charge/Over-discharge Protection.
Specification:
| Model | HX-2S-D20 |
|---|---|
| Over Charge Voltage Range | 4.25-4.35 V + 0.05 V |
| Over Voltage Range | 2.5-3.0 V + 0.05 V |
| Max. Operating Current | 13 A |
| Max. Limiting Current | 20 A |
| Charging Voltage | 8.4-9 V |
| Quiescent Current | Lower than 10 µA |
| Internal Resistance | <300 Ohm |
| Operating Temperature | -40°C to +50°C |
| Length (mm): | 44.77 |
| Width (mm) | 18.85 |
| Height (mm) | 3.5 |
| Weight (gm) | 4 |
| Shipping Weight | 0.005 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
Package Includes:
1 x 2S 20A 18650 Lithium Battery Protection Board
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Read More →Technical Specifications
| Current Rating | 20A |
|---|---|
| Cell Configuration | 2S |
| SKU | AI2954 |
| Weight | 0.004017 kg |
| Availability | Out of Stock |
Applications & Use Cases
The 2S 20A 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
