I can responsibly tell you that there are absolutely no lithium or nickel batteries in the electric wheelchairs currently sold in China. These are all lead acid batteries. It is estimated that there could be export sales, but I am not sure. After all, the price difference between lithium batteries and lead-acid batteries is too big, almost 7-10 times the price difference!
If you need to carry an electric wheelchair when you travel, you should purchase a lightweight, foldable lithium battery electric wheelchair. Lithium battery electric wheelchairs generally weigh around 25 kilograms and can be folded with one click. Not only are there weight and size requirements, but the battery capacity must also not exceed 300 watts.
Also, if you want to travel with an electric wheelchair, do not purchaseno low quality and cheap electric wheelchair. I often encounter foreigners who bring electric wheelchairs when they travel, but the wheelchair breaks down before they can travel. Do you think you are still in the mood to travel after encountering something like this? To purchase an electric wheelchair, you can check out Wheelchair.com, which is full of mid- to high-end electric wheelchairs. There are different categories.