The DALY Li-ion 20S 72V 50A BMS is a high-performance battery management system designed to protect and manage lithium-ion battery packs configured in a 20-series (20S) arrangement, providing a nominal voltage of 72V. It ensures stable and safe battery operation by delivering comprehensive protection against overcharge, over-discharge, overcurrent, short circuit, and overheating.
Built with a waterproof, dustproof, and vibration-resistant housing, this BMS is well-suited for high-voltage applications such as electric bikes, electric scooters, solar energy storage systems, backup power units, robotics, and custom-built battery packs. It features intelligent passive balancing and precise voltage monitoring to enhance battery efficiency, extend lifespan, and maintain consistent performance across all cells.
| Parameter | Value |
|---|---|
| Battery Type | Li-ion (Lithium-ion) |
| Series | 20S (20 cells in series) |
| Nominal Voltage | 72V |
| Continuous Discharge Current | 50A |
| Charging Current | 25A |
| Overcharge Detection Voltage | 4.25V ± 0.05V (per cell) |
| Over-discharge Voltage | 2.8V ± 0.05V (per cell) |
| Overcurrent Detection | 55A |
| Balance Function | Yes (Passive Balancing) |
| Balance Voltage | 4.18V (per cell) |
| Short Circuit Protection | Yes (with automatic recovery) |
| Operating Temperature | -15°C to 60°C |
| Waterproof Rating | IP65 |
| Dimensions (Approx.) | 125mm × 65mm × 13mm |
| Weight | 210g |
| IC Chip | Integrated Protection Circuit |
1 × DALY Li-ion 20S 72V 50A Waterproof Battery Management System
Due to the type of products we sell, we accept limited returns. Below are the conditions where we can accept a return request.
If you receive a product damaged during shipment, please notify us within 3 days of receiving the product, supported by proper pictures and a description. Once our support team accepts the return, we will provide a replacement or a complete refund, including the return shipping cost.
If your item looks different from what is shown in the image on our website, we will take the item back and provide a refund or replacement as per your choice.
We don’t accept returns for products damaged due to improper use. Moreover, we don’t accept returns if the ordered product is not suitable for a specific application. Please read the product specifications and datasheet carefully before placing an order. Returns are accepted only within 3 days from the date of delivery.
We ship all over India with free shipping on all prepaid orders above ₹500. For Cash on Delivery (COD) orders, ₹80 will be charged for orders below ₹599 and ₹30 for orders above ₹599.
For any questions related to shipping, please contact our support team at support@quartzcomponents.com.
Note: The minimum order value for COD orders is ₹500.