Both types allow the same maximum annual contributions, based on your age. (us.hsbc.com)
The IRS maximum annual contribution limit for HSAs in 2018 is $ 3,450 for those individuals electing single coverage under an HDHP, and $ 6,850 for those electing family coverage. (fidelity.com)
Some savings tools, such as Coverdell accounts (described below), have maximum annual contribution amounts per beneficiary. (aaii.com)