If you're a shop owner, make battery checks part of your routine. Here's a quick list:

• Check for visible damage on batteries and devices—dents, swelling, tears.
• Verify that chargers are in good condition and have proper certifications.
• Spot-check mAh claims: measure the physical size and compare with known battery dimensions. A 5000mAh battery is roughly the size of a soda can, so a tiny disposable with that claim is suspect.
• Educate customers on proper charging habits, like not leaving devices plugged in overnight.
• Keep an eye on firmware updates for smart devices; some improve battery efficiency.

Regular checks help you catch problems before they become safety issues. It also builds trust with your customers.