These are usually 1.2V, some devices start to complain that are they low on power at 1.2V, regular non-rechargeables are 1.5-1.6V at full capacity. So ymmv with different devices.
3 Likes
Amazon has an unfortunate habit of changing the appearance of their rechargeables. If these are still the “black label” Amazon batteries, they are really quite good according to tests.