Trying to find a replacement battery

The battery died in my el-cheapo but decent tagital t10 plus tablet, trying to locate a replacement battery that won't take over a month to ship from China... It is a 3.7v 5500mAh battery of a decent footprint, about 75mm x 125mm with a simple soldered two wire hookup... Any chance you have one that will work for me? There is plenty of extra space around it and it is simple double face taped in place in the tablet so the dimensions don't even need to be close really. The Sanyo V811V801 battery seems like it would be about a perfect match so anything comparable would be great.

I've been on that exact site when originally searching for one, they have a minimum order of 10, I am the end user and only need 1. The other sites that have suitable batteries available individually have to be shipped from China and estimate 39 days shipping time. I was/am hoping iFixit has access to more suppliers for a suitable replacement. (doesn't have to be an exact match, as long as it's a standard 3.7v 5500mah battery with soldered wire connections rather than a device specific ribbon cable.