Eco-Worthy LiFePO4 Battery User Manual

Quick Guide

This manual covers the operation and maintenance of Eco-Worthy LiFePO4 batteries ranging from 12V 8Ah to 12V 50Ah. These batteries feature a built-in Battery Management System (BMS) to protect against over-voltage, under-voltage, and short circuits. Always ensure your charging equipment is compatible with LiFePO4 chemistry to maintain battery health and longevity.

Specifications

The following parameters apply to the Eco-Worthy LiFePO4 series:

• Nominal Voltage: 12.8V
• Voltage Range: 10V - 14.6V
• Charge Voltage: 14.6V
• Standard Operating Temperature: 25°C ± 5°C (77°F ± 9°F)
• Charge Temperature Range: 0°C to 55°C (32°F to 131°F)
• Discharge Temperature Range: -20°C to 55°C (-4°F to 131°F)

Refer to the product label for specific capacity (Ah) and terminal bolt size (F2, M5, or M6) relevant to your specific model.

BMS Parameters

The internal BMS provides automatic protection:

• Over-voltage: Triggers at 14.5V-14.6V; recovers at 13.9V-14.2V.
• Under-voltage: Triggers at 9.2V-9.5V; recovers at 10.5V-10.8V.
• Short Circuit: Triggers at 50A (8Ah/10Ah), 100A (20Ah/30Ah), or 200A (50Ah). Recovery requires removing the short circuit.

Charging Methods

Mains Power

The ideal charging method is using a dedicated lithium iron phosphate battery charger programmed with the appropriate voltage limits. Most lead-acid battery chargers are also compatible, provided the output voltage matches the LiFePO4 standard charge voltage.

Solar Power

You can charge the battery using solar panels. Ensure you use a charge controller with a LiFePO4 or Li-ion battery mode. Both PWM and MPPT controllers are suitable. If no controller is used, the internal BMS provides protection, but direct connection without a controller is not recommended due to potential BMS failure risks.

Troubleshooting

• Battery not fully charging: Verify that your charger or controller output voltage is compatible with LiFePO4 requirements (14.6V).
• Capacity issues: If batteries are connected in series/parallel and do not reach rated capacity, the charging process may be unbalanced. Disconnect the batteries and charge them individually to verify the condition of each unit.
• Over-discharge protection: If the battery triggers over-discharge protection, remove the load or inverter and continue charging until it recovers. If it fails to recover, use a solar panel or a power source with a voltage higher than 15V to jump-start the battery.