Overkill Solar 120A 4s 12V BMS Manuals

Manuals and User Guides for Overkill Solar 120A 4s 12V BMS. We have 1 Overkill Solar 120A 4s 12V BMS manual available for free PDF download: Instruction Manual

Overkill Solar 120A 4s 12V BMS Instruction Manual

Overkill Solar 120A 4s 12V BMS Instruction Manual (68 pages)

Brand: Overkill Solar | Category: Control Unit | Size: 6 MB

Table of Contents

Table of Contents
2
1 Introduction

5
- What Is a BMS
  5
2 How to Build a Battery Pack

5
- Safety Precautions
  5
- Planning
  5
  - Gather Components
    5
  - Gather Consumables
    6
  - Gather Tools
    7
- Top Balancing
  7
- Assembly
  9
  - Arranging the Cells
    9
  - Connect the Balance Wires
    11
  - Prepare BMS
    12
  - Add BMS
    12
  - Temperature Sensor
    13
  - External Switch
    13
  - Connectivity
    14
    
    Bluetooth Module
    14
    
    USB Interface
    15
    
    Arduino LCD Display
    16
3 BMS Parameters

16
- Protection Parameters
  16
  - Cell over Voltage
    16
  - Cell under Voltage
    17
  - Battery over Voltage
    17
  - Battery under Voltage
    18
  - Charge over Current
    18
  - Discharge over Current
    19
  - Charge over Temperature
    19
  - Charge under Temperature
    19
  - Discharge over Temperature
    19
  - Discharge under Temperature
    19
- Capacity Parameters
  19
  - Designed Capacity
    20
  - Cycle Capacity
    20
  - Full Charge Voltage
    20
  - End of Discharge Voltage
    20
  - Discharge Rate
    20
  - 80%, 60%, 40%, 20% Capacity Voltage Levels
    21
- Balance Parameters
  21
  - Start Voltage
    21
  - Delta to Balance
    21
  - Balancer Enabled
    21
  - Balance Only When Charging
    21
- Other Parameters / Features
  21
  - Switch
    21
  - Load Detect
    21
  - LED Enabled
    22
  - LED Capacity
    22
  - BMS Name
    22
  - Barcode
    22
  - NTC Settings
    22
4 Periodic Maintenance

23
- Periodic Cable Check
  23
- Periodic Voltage Check
  23
5 Troubleshooting & FAQ

24
6 Technical Support, Return, and Refund Policy

28
Appendix

29
- Appendix A: Recommended Parameters
  
  29
- Appendix B: Calibration
  
  43
  - Voltage Calibration
    43
  - Current Calibration
    44
    
    Idle Current Calibration
    44
    
    Charge Current Calibration
    45
    
    Discharge Current Calibration
    47
- Appendix C: about Cell Balancing
  
  49
- Appendix D: BMS Specifications
  
  55
  - Pinouts
    56
    
    BMS Balance Connector (12V)
    56
    
    BMS Connector
    56
    
    BMS Serial Interface Connector
    57
    
    BMS Switch Connector
    58
    
    BMS Temp Sensor Connector
    59
- Appendix E: BMS Application Usage
  
  59
  - Xiaoxiangbms (Iphone)
    59
  - Xiaoxiang (Android)
    60
  - Jbdtools (PC)
    63
- Appendix F: Wire and Lug Sizing
  
  66
  - Wire Sizing Chart
    66
  - Battery Bus Bar Sizing Chart
    66
- Appendix G: Glossary
  
  67
- Appendix H: Further Reading
  
  68
  - Mobile Solar Power Made Easy! by will Prowse
    68

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