I recently purchased a lithium-ion battery for my scooter and I can share my experience. First, it is important to consider the battery capacity, which directly affects the range. I chose a battery with a higher capacity so that I would not have to worry about frequent recharging. But keep in mind that a more powerful battery may be a bit heavier, so it is worth looking for a compromise between capacity and weight. Also, pay attention to the quality and manufacturer of the battery. I spent a long time looking for a reliable brand to avoid cheap and low-quality options. It is better to spend a little more, but be sure of durability. Some brands even offer a warranty on their batteries, which in my opinion is very important.