Three more ways to activate your LifePo4 Battery!

Methods to Reactivate a Dead 12V LiFePO4 Battery

The video demonstrates three practical ways to “wake up” a dead or deeply discharged 12V Lithium Iron Phosphate (LiFePO4) battery:

1. Using a Benchtop Power Supply

• Utilize a benchtop power supply with adjustable voltage and current settings.
• Slowly raise the battery voltage from a low level (e.g., 7.8V) back up to a normal charging voltage (~14V).
• This method allows controlled charging by gradually increasing amperage to safely revive the battery.

2. Using a Lithium Iron Phosphate Specific Charger (Recommended)

• Use a charger designed specifically for 12V LiFePO4 batteries.
• These chargers can handle very low or zero voltage states without damaging the battery.
• They automatically detect and begin charging even if the battery is deeply discharged or “sleeping,” often indicated by LED status changes from blinking to solid lights.
• This is the simplest and safest method to reliably wake up a dead LiFePO4 battery.

3. Using a 12V Solar Panel (Experimental)

• Connect a 100W solar panel directly to the battery terminals.
• This can gradually increase the battery voltage from a low state to a charging state.
• The presenter tested this method for the first time and observed the battery voltage rising steadily (from ~10.58V to over 11V).
• This approach is less conventional and generally not recommended without proper charge controllers or precautions but can work in emergency situations.

Key Takeaways

• Use equipment specifically tailored for LiFePO4 batteries to avoid damage and ensure reliable reactivation.
• The recommended approach is to use a dedicated LiFePO4 charger for safety and convenience.
• The benchtop power supply offers manual control but requires more knowledge and care.
• The solar panel method is a novel, less controlled approach demonstrated experimentally.

Additional Notes

• The presenter invites viewers to comment with questions or suggestions for improvement.
• Links to the products used (benchtop power supply, LiFePO4 charger, solar panel) are provided in the video description.

Main Speaker

• The video is presented by a single host who demonstrates and explains each method step-by-step.