MIDAS SVX2 Combined SV and CT Profiler - Operating Manual
MANUAL-1553401442-1 | issue: 1.5
Page | 9
©
2022
–
Valeport Ltd
2.4.2.1 A Note About Rechargeable Cells
We are often asked if rechargeable cells can be used. Yes, it is possible to use rechargeable cells,
but we do not recommend it:
•
Firstly, the cells cannot be recharged in-situ due to the possibility of the cells giving out gas
inside a sealed instrument, effectively turning it into an explosive device. Whilst this risk is
small, it does exist and therefore must be considered. The risk could be overcome by adding
an air vent to the housing, but this could compromise the water-tight nature of the housing.
Better to remove the risk altogether.
•
Secondly, the most commonly used rechargeable cells are NiCad type. These only operate at
around 1.2v maximum and have about 25% of the capacity of an alkaline cell; they therefore
give greatly reduced operating times.
•
Modern Li-ion or NiMH cells are more efficient than NiCad cells, but do not yet compare with
alkaline cells. They are also considerably more expensive.
Technology is constantly changing and battery technology, in particular, is at the forefront of
development. As new battery chemistries become available Valeport will advise on a case by case
basis.