Keywords：LiFePO4 cable resistance, voltage drop, lithium battery efficiency

Many system losses come not from the battery but from poor wiring.

1. High Connection Resistance Causes Energy Loss

Loose connectors or undersized cables lead to:

• Voltage drop
• Heat generation
• Reduced system efficiency

2. Temperature Rise Shortens Battery Life

Excess heat caused by high resistance accelerates:

• Cell aging
• BMS stress
• Thermal imbalance

3. Corrosion and Oxidation Effects

Outdoor storage systems often experience oxidation in terminals.
Symptoms include:

• Unstable charging
• Voltage fluctuation
• Increased self-consumption

Use tinned copper cables and anti-oxidation grease.

4. Safety Improvement with Proper Connections

Proper tightening torque reduces:

• Sparking risk
• Hot spots
• Connector failures

Always follow manufacturer torque specs.