A marine research team uses a sealed data logger during a 14-day survey. The logger is submerged for one uninterrupted 7-hour deployment each day. Its battery cannot be replaced during a deployment.
There are 17 hours between deployments. An electricity supply is available during this time. The team starts the survey with either a new non-rechargeable battery or a fully charged rechargeable battery.
The table gives information about the two battery choices.
| Feature | Non-rechargeable alkaline battery | Rechargeable battery |
|---|---|---|
| Cost of one battery in pounds | 3 | 19 |
| Operating time before the battery stops, in hours | 23 | 9 |
| Maximum number of times the battery can be recharged | 0 | 400 |
| Time needed to recharge the battery, in hours | not possible | 4 |
Evaluate the battery choices for this survey.
Use calculations and the information in the table.
90 exam-style questions on AQA GCSE Chemistry 5.2 Chemical cells and fuel cells, covering 5.2.1 Cells and batteries, 5.2.2a Fuel cells, and 5.2.2b Half equations for hydrogen fuel cells. Each one has a worked solution and a mark scheme showing where the marks go.