Mex recently praised Lifeline AGM for their detailed PDF on properly charging their batteries.
A company which provided detailed in depth documentation on their products does inspire confidence. One which provided little information yet makes lofty claims, not so much, or not at all.
Here is a Quote from MeanWell regarding temperature
.
6.2 Ambient Temperature and Components’ Lifetime
(1) High frequency and high efficiency switching technology, improvement of
components, and integration with up to date technology can reduce the size of the
S.P.S. But, components must also populate the PCB at higher density. The lifetime
of components on a S.P.S. will vary significantly due to differences in ambient
temperature. When an electrolytic capacitor is used for filtering, its internal
chemical reaction will raise the surface temperature. Lifetime of the electrolytic
capacitors is sensitive to ambient temperature.
(2) In general, the lifetime of the electrolytic capacitors will be reduced by half for
every 10 ? increase in the ambient temperature. On the contrary, when
temperature goes down 10?, it's life time will be doubled. Figure 6.2 describes the
relationship between lifetime of the power supply and ambient temperature. If the
S.P.S. is continuously operated in high temperature environment, the electrolytic
capacitors will enter the “fatigue failure period” earlier while in the mean time the
other components are still at the “random failure period”. To extend the lifetime of
this S.P.S., we need to replace all the electrolytic capacitors.
Source:
http://www.adminstrumentengineering.com.au/media/pdfs/Catalogues/Manuals/Mean-Well-USER-Technical-Manual.pdfWhile I believe megawatt is a good power supply, merely the fact that meanwell publishes such a detailed document, will have me ordering one of their products for a good percentage more $$ than the megawatt, likely tomorrow.
