Use a charger compatible with your battery type—lithium-ion, NiMH, or lead-acid—to prevent damage. Always follow the manufacturer's instructions for safe and efficient charging.

For removable batteries, insert them into the charger, aligning the positive (+) and negative (-) terminals to avoid short circuits. For devices with built-in batteries, connect the appropriate cable securely to both the device and charger.

Connect the charger to a power source like a wall outlet or USB port. Red indicates charging, and green means fully charged. Disconnect the charger once the battery is full to prevent overcharging.

After charging, unplug the charger and remove removable batteries. Store unused batteries in a cool, dry place away from sunlight and extreme temperatures. For lead-acid batteries, check and top up electrolyte levels with distilled water as needed.