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Old 16-02-2021, 01:37 PM
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JohnH
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JohnH is offline
 
Join Date: Feb 2005
Location: NSW
Posts: 1,226
Lithium Batteries for astrophotography

Has anybody had success with using Lithium batteries for portable power of an AP rig? I have tried two different models from different suppliers but the results are the same. There is a swift decay in the output voltage such that I experience equipment dropouts after only an hour or so of use. The battery self check is still showing 80% capacity at this point but the voltage output is below 12V.



Fully charged these batteries seem to put out only 12.5V (no load) which is well below what a lead acid system would produce. It seems to me these batteries are ok for camping use but not for AP.


I have not been able to find a LI battery with a regulated output.


Happy to hear if you have found a solution.
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