How long will Meelight’s charge last for on each of the light levels?

“Meelight contains a high-spec lithium-ion battery and so will keep it’s charge for longer than many nightlights or electronic devices.
On the low light level, Meelight’s charge will last for around 48 hours of continuous use.
On the medium light level, Meelight’s charge will last for 12 hours (24 x 30 minute timer sessions).
On the highest light level, Meelight’s charge will last for approximately 4 hours (8 x 30 minute timer sessions)”