How to Charge Different Types of Batteries with a Power Supply
Charging with a Power Supply: Safely set voltage and current for lithium, lead acid, NiCd, and NiMH batteries. Follow key steps for safe, efficient charging.
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In controlled scenarios, a power supply can charge batteries if you implement safeguards: Voltage matching: A 12V lead-acid battery requires 13.6–14.4V for charging—adjust your power supply accordingly. Current limiting: Use a bench power supply with adjustable current or add a resistor in series.
Charging with a power supply requires you to set both voltage and current limits for each cell. For most lithium-ion chemistries, such as NMC Lithium battery, LCO Lithium battery, and LMO Lithium battery, you set the full charge voltage at 4.20V per cell. For LiFePO4 Lithium battery, you set the voltage at 3.65V per cell.
Power supplies maintain a fixed output regardless of load, which poses risks when charging batteries: No charge termination: Unlike chargers, power supplies won't stop when the battery reaches full capacity, risking overcharge damage.
Yes, but store them at 40–60% charge and avoid freezing temperatures. If the garage drops below 32°F (0°C), indoor storage is safer. Can I leave my lithium batteries in my boat over the winter?
Charging with a Power Supply: Safely set voltage and current for lithium, lead acid, NiCd, and NiMH batteries. Follow key steps for safe, efficient charging.
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