### **AG Battery Technologies** **Cylindrical Lithium-Ion Battery Care & Maintenance Manual** **Safety First: Important Warnings** * **Never** Disassemble, Crush, Puncture, Or Short-circuit The Bat

### **AG Battery Technologies**

**Cylindrical Lithium-Ion Battery Care & Maintenance Manual**

**Safety First: Important Warnings**

*   **Never** disassemble, crush, puncture, or short-circuit the battery.

*   **Never** expose the battery to fire, excessive heat (above 60°C/140°F), or direct sunlight for prolonged periods.

*   **Never** immerse the battery in water or other liquids.

*   **Use only** the designated charger specified for your device. Using an incompatible charger can cause fire, explosion, or permanent damage.

*   Keep batteries away from children and pets. If swallowed, seek immediate medical attention.

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#### **1. Charging Best Practices**

Proper charging is the most critical factor in maximizing battery lifespan and safety.

*   **Use the Right Charger:** Always use the manufacturer-provided or recommended charger. It is designed with the correct voltage (usually 4.2V/cell) and current limits for your specific battery.

*   **Avoid "Trickle" or Overnight Charging:** While most modern chargers have auto-cutoff, it is good practice to disconnect the battery once it is fully charged (indicator shows full). Do not leave it on the charger for days unattended.

*   **Optimal Charging Range:** For longest life, try to **start charging when the battery reaches 20-30% capacity**. Avoid completely draining it to 0% regularly.

*   **Mind the Temperature:** **Charge at room temperature (10°C - 45°C / 50°F - 113°F)**. Never charge a battery that is below 0°C (32°F) or feels hot to the touch. Allow a hot battery to cool down before charging.

#### **2. Discharging & Usage Guidelines**

How you use your battery directly impacts its long-term health.

*   **Avoid Deep Discharge:** Do not run your device until it completely shuts off due to low power. Deep discharges stress the battery chemistry.

*   **High Load & Temperature Management:** Applications with high current draw (e.g., power tools, high-performance flashlights) will heat the battery. Allow for **cool-down periods** during intensive use to prevent overheating.

*   **Partial Discharges are Beneficial:** You do not need to fully discharge and recharge every cycle. Frequent, partial top-ups are perfectly healthy for lithium-ion batteries.

#### **3. Storage Instructions**

If you will not be using the battery for a month or more, proper storage is essential.

*   **Charge Level for Storage:** The ideal state for long-term storage is a **40-60% charge level**. Storing a battery fully charged or completely empty accelerates capacity loss.

*   **Storage Environment:** Store in a **cool, dry place**. The optimal storage temperature is between **10°C and 25°C (50°F - 77°F)**. A refrigerator is NOT recommended due to potential moisture condensation.

*   **Regular Check-up:** For batteries in storage longer than 6 months, check the voltage/charge level every 3-6 months and recharge to the 40-60% range if needed.

#### **4. Inspection & Handling**

Regular visual and physical checks ensure safety.

*   **Regular Inspection:** Before each use, inspect the battery for any signs of:

   *   **Damage:** Dents, cracks, or swelling.

   *   **Leakage:** Any signs of fluid residue.

   *   **Terminal Corrosion:** Discoloration or rust on the positive and negative ends.

*   **If any of the above are found, STOP USING THE BATTERY IMMEDIATELY.** Isolate it in a non-flammable container and contact a professional for proper disposal.

*   **Clean Terminals:** If dirty, clean the metal terminals with a dry cloth. Ensure good contact with your device.

#### **5. Transportation & Disposal**

*   **Transportation:** When transporting loose cells, always use a dedicated **plastic battery case** to prevent short circuits from contact with metal objects (keys, coins, etc.).

*   **Disposal:** Cylindrical lithium-ion batteries are **hazardous waste**. **Do not dispose of in regular household trash.** Take used or damaged batteries to a certified battery recycling center or a designated electronics retailer.

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**Lifespan Expectancy:**

Under normal use and following these guidelines, a quality cylindrical lithium-ion battery can typically deliver **300 to 500 full charge cycles** while retaining above 80% of its original capacity. Usage patterns, temperature, and charging habits will determine actual service life.

**Disclaimer:**

This manual provides general guidelines. Always prioritize the specific instructions provided with your device or battery pack. AG Battery Technologies is not liable for damage or injury resulting from misuse, improper handling, or failure to follow safety instructions.

**For technical support, visit:** **[Your Website/Contact Page]**

**AG Battery Technologies – Powering Your World, Responsibly.**