| Joined: | Mon Apr 2nd, 2012 |
| Location: | Carthew, Cornwall, United Kingdom |
| Posts: | 6880 |
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A single 18650 will power a LED bulb for many hours. 18650 battery is rated at 3.4-3.7volts.
To power your Astromount motor you need 12-25volts I think. This is the equivalent of about 5 of the 18650 batteries (18v) in series. You need three batteries only if you need 10-12volts
Note: series, not parallel.
So for 6 cells you can have two independent power supplies.
However since the light will only be used occasionally then you can use 5 batteries in series but tap into the first battery only of the series for your light.
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