Description
The DALY BMS LFP LiFePO4 20S 60V 20A is a fixed 20S Battery Management System designed for LiFePO4 battery packs made from 20 series-connected 3.2V cells. It supports a nominal 60V LiFePO4 battery configuration and includes balance wiring and a temperature sensor for reliable battery monitoring and protection.
This BMS is specifically designed for LiFePO4 chemistry and cannot be used with Li-ion, Li-Metal, or LTO battery packs. It helps protect the battery pack against overcharging, over-discharging, excessive temperature, short circuits, and cell voltage imbalance.
The BMS supports cylindrical and prismatic LiFePO4 cells, including commonly used 18650, 21700, and 36500 cell formats, making it suitable for a wide range of custom battery pack applications.
Key Features
- Designed for 20S LiFePO4 battery packs
- Suitable for 60V LiFePO4 battery systems
- 20A rated BMS
- 21-wire balance/sense cable
- Supports balanced charging and cell voltage monitoring
- Overcharge protection
- Over-discharge protection
- Temperature protection
- Short-circuit protection
- Balance current: 30 ± 5mA
- Compatible with cylindrical and prismatic LiFePO4 cells
- Suitable for 18650, 21700, and 36500 cell formats
- Compact and lightweight design
- DALY battery protection technology
Applications
- Electric bike battery packs
- Electric skateboards
- Solar energy storage systems
- RV battery systems
- Camping boats
- Power tools
- Lawn and garden equipment
- Household energy storage
- Custom 60V LiFePO4 battery packs
Protection Functions
- Overcharge Protection: Detects excessive cell voltage and disconnects charging.
- Over-Discharge Protection: Protects cells from excessive discharge.
- Temperature Protection: Provides charging and discharging temperature protection.
- Short-Circuit Protection: Shuts down the battery system when a short circuit is detected.
- Cell Balancing: Helps maintain balanced voltage levels between cells during charging.
Battery Compatibility
- Battery Chemistry: LiFePO4 / LFP only
- Series Configuration: 20S fixed
- Cell Voltage: 3.2V nominal per cell
- Pack Configuration: 20 × 3.2V cells
- Nominal Pack Voltage: 60V
- Not compatible with: Li-ion, Li-Metal, or LTO batteries
Package Includes
- 1 × DALY 20S 60V 20A LiFePO4 BMS
- 1 × 21-wire balance/sense cable with connector
Specifications
| Specification | Details |
|---|---|
| Brand | DALY |
| Battery Type | LiFePO4 / LFP |
| Series Configuration | 20S |
| Nominal Battery Voltage | 60V |
| Rated Continuous Discharge Current | 20A |
| Peak Current | 180 ± 30A |
| Main Circuit Resistance | ≤ 20mΩ |
| Charge Voltage | S × 3.75V |
| Charge Current | 30A |
| Overcharge Detection Voltage | 3.75 ± 0.05V |
| Overcharge Protection Delay | 1S |
| Overcharge Release Voltage | 3.65 ± 0.05V |
| Balance Detection Voltage | 3.5V |
| Balance Release Voltage | 3.5V |
| Balance Current | 30 ± 5mA |
| Over-Discharge Detection Voltage | 2.7 ± 0.1V |
| Over-Discharge Detection Delay | 1S |
| Over-Discharge Release Voltage | 2.7 ± 0.1V |
| Over-Current Detection Delay | 1mS |
| Over-Current Detection Condition | Off load |
| Short-Circuit Protection Condition | Short circuit external load |
| Short-Circuit Detection Delay | 250µS |
| Short-Circuit Relay Condition | Off load |
| Charging Temperature Protection | < -5°C or > 50°C |
| Discharging Temperature Protection | < 70°C |
| Working Current | 100µA |
| Sleeping Current | 20µA |
| Working Temperature | -20°C to 70°C |
| Sleeping Temperature | -40°C to 80°C |
| Weight | 8 oz |
| Dimensions | 2.6 × 5 × 0.6 inches |
| Balance Cable | 21-wire sense cable |
| SKU | BMS-035 |
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