Ellis Gibson (B.Sc. in Mechanical Engineering)

Yes, you can mail a battery backup via USPS. Lithium-ion batteries must meet specific USPS regulations. Each cell should not exceed 20 watt-hours, and each battery should not exceed 100 watt-hours. You can include up to 8 cells or 2 batteries in your package. Ensure proper packaging that adheres to safety standards. To ensure safe … Read more

You can mail a nonspillable wet lead-acid battery via USPS if its casing is completely sealed. This seal keeps the liquid electrolyte inside and prevents leaks that could cause corrosion. Always check USPS mailing regulations for detailed safety requirements before sending your battery. Next, you must label the package appropriately. The USPS requires that you … Read more

Yes, you can charge the Nikon D3400 battery overnight. The charger has safety features, including automatic shut-off. This means it stops charging when the battery is fully charged. If the battery has some charge, it may reach full capacity in under an hour. This method is safe and helps maintain battery life. To enhance performance, … Read more

Yes, you can lubricate battery terminals with petroleum jelly (Vaseline). Apply a thin layer before reattachment. This practice offers lubrication for easier connection and prevents corrosion. Using a small amount ensures effective application, helping to extend the battery’s life. To apply, first, ensure the battery is disconnected. Clean the terminals thoroughly to remove any existing … Read more

It is unsafe to leave the negative battery terminal connected during vehicle maintenance. Keeping it connected raises the fire risk and potential for physical injury. Always disconnect both the negative and positive terminals before starting. Ensure that cables are secured and cannot touch the terminals to prevent accidents. If the negative connector remains attached while … Read more