What is the battery life of the lighter?

The product can be used more than 80 times on a single charge and can be charged more than 500 times. One electric lighter is equal to 300 traditional lighter.

How do I clean the tip area of my lighter?

The tip is made of heat-resistant ceramic (which does not burn). But carbon from candle soot and charring wax produced by candle burn when lighter literally jamming it into the wick. You can clean the tip area of lighter with soft cloth.

Is it safe to use a rechargeable lighter on gas stove?

Yes, it can be used for light gas stove. And for the safety of consumer, the igniting spark will auto stop beyond 7 seconds per igniting.

Is this easy to light? My mom doesn't have the strength to use a traditional candle lighter.

Yes, it's easy to light. All you have to do is press the little power button on it and put it on the wick. The candle will light in a few seconds.

Does this electric arc lighter come with USB charging cable and what type of charging cable?

Yes, it comes with a Type-C charging cable. You can use the USB port to charge it through computer. If it is missing, you can use a mobile phone charging cable. They are the same kind of charging cable.