Description
The DALY BMS Li-ion 13S 48V 100A is a high-current Battery Management System designed for 13-series (13S) Lithium-ion battery packs. It provides battery protection, cell voltage monitoring, and balancing to help maintain safe and reliable battery operation.
With a 100A continuous discharge current and 300A ± 50A peak current according to the supplied specifications, this BMS is intended for high-current Li-ion battery applications where strong load handling is required.
The BMS provides protection against over-charge, over-discharge, over-current, short circuit, and temperature conditions.
Fixed 13S Li-ion Configuration
This BMS uses a fixed 13S configuration and is designed specifically for 13-series Lithium-ion battery packs. It cannot be used for other battery pack configurations.
It is strictly intended for Li-ion battery packs and should not be used with:
- LiFePO4 batteries
- Lithium-metal batteries
- LTO batteries
Always confirm the battery chemistry and series configuration before installation.
Over-Charge and Over-Discharge Protection
The BMS monitors individual cell voltages to help protect the battery pack from excessive charging and discharging.
The supplied specifications list:
- Over-charge detection: 4.25 ± 0.05V
- Over-charge release: 4.15 ± 0.05V
- Over-discharge detection: 2.7 ± 0.1V
- Over-discharge release: 3.0 ± 1.0V
The supplied product information states that charging stops when a cell reaches 4.25V, while discharge protection operates when the cell voltage reaches the specified low-voltage threshold.
Temperature Protection
The BMS includes temperature protection for charging and discharging conditions.
According to the supplied information:
- Charging temperature protection: below -5°C or above 50°C
- Discharge temperature protection: below 70°C
- Working temperature range: -20°C to 70°C
The built-in mechanical temperature sensor is intended to help monitor battery temperature and provide additional protection during operation.
Over-Current and Short-Circuit Protection
The DALY 13S 100A BMS provides over-current and short-circuit protection for the battery pack.
The supplied specifications include:
- Continuous discharge current: 100A
- Peak current: 300A ± 50A
- Over-current detection delay: 1ms
- Short-circuit detection delay: 250µs
When a short-circuit condition is detected, the BMS can shut down the battery output to help protect the BMS and connected battery pack.
Cell Balancing
The BMS provides cell balancing to help maintain more consistent voltage levels across the cells in a 13S battery pack.
- Balance detection voltage: 4.18V
- Balance release voltage: 4.18V
- Balance current: 30 ± 5mA
Key Features
- Designed for 13S Li-ion battery packs
- 48V-class Lithium-ion BMS
- 100A continuous discharge current
- 300A ± 50A peak current
- Cell voltage monitoring
- Cell balancing function
- Over-charge protection
- Over-discharge protection
- Over-current protection
- Short-circuit protection
- Charging and discharging temperature protection
- Built-in mechanical temperature sensor
- High-voltage, low-resistance power MOSFETs
- Heat sink for improved cooling
- Low power consumption
- High water-resistance coating
- Anti-corrosion PCB protection
- Suitable for cylindrical and prismatic Li-ion cells
- Includes 14-wire balance/sense cable
Compatible Battery Cells
This BMS is designed for Lithium-ion battery packs using compatible cell formats, including:
- 18650 Li-ion cells
- 21700 Li-ion cells
- 36500 cylindrical cells
- Compatible prismatic Li-ion cells
Important: This is a Li-ion BMS only. Do not use it with LiFePO4, LTO, Lithium-metal, or other incompatible battery chemistries.
Protection Functions
| Protection Function | Specification |
|---|---|
| Over-Charge Detection Voltage | 4.25 ± 0.05V |
| Over-Charge Protection Delay | 1 sec |
| Over-Charge Release Voltage | 4.15 ± 0.05V |
| Over-Discharge Detection Voltage | 2.7 ± 0.1V |
| Over-Discharge Protection Delay | 1 sec |
| Over-Discharge Release Voltage | 3.0 ± 1.0V |
| Over-Current Detection Delay | 1ms |
| Short-Circuit Detection Delay | 250µs |
| Charging Temperature Protection | < -5°C or > 50°C |
| Discharge Temperature Protection | < 70°C |
| Balance Detection Voltage | 4.18V |
| Balance Current | 30 ± 5mA |
Technical Specifications
| Specification | Details |
|---|---|
| Battery Type | Li-ion |
| Battery Configuration | 13S |
| Continuous Discharge Current | 100A |
| Peak Current | 300A ± 50A |
| Main Circuit Inner Resistance | ≤ 20mΩ |
| Charge Voltage | S × 4.25V |
| Charge Current | 50A |
| Over-Charge Detect Voltage | 4.25 ± 0.05V |
| Over-Charge Protection Delay | 1 sec |
| Over-Charge Release Voltage | 4.15 ± 0.05V |
| Balance Detect Voltage | 4.18V |
| Balance Release Voltage | 4.18V |
| Balance Current | 30 ± 5mA |
| Over-Discharge Detect Voltage | 2.7 ± 0.1V |
| Over-Discharge Detect Delay | 1 sec |
| Over-Discharge Release Voltage | 3.0 ± 1.0V |
| Over-Current Detect Delay | 1ms |
| Over-Current Detect Voltage | Off Load |
| Short-Circuit Protection Condition | Short Circuit External Load |
| Short-Circuit Detect Delay | 250µs |
| Short-Circuit Protection Relay Condition | Off Load |
| Temperature Protection | Charge < -5°C or > 50°C; Discharge < 70°C |
| Working Current | 100µA |
| Sleeping Current | 20µA |
| Working Temperature Range | -20°C to 70°C |
| Sleeping Temperature Range | -40°C to 80°C |
| Weight | 1 Pound |
| Size | 6.2 × 2.5 × 1 Inches |
Applications
The DALY BMS 13S 48V 100A can be used in a range of high-current Lithium-ion battery applications, including:
- 48V electric bikes
- Electric scooters
- Electric skateboards
- Solar battery systems
- RV power systems
- Power tools
- Camping equipment
- Household energy storage
- Battery-powered equipment
- Custom 13S 18650 battery packs
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