Power source for EM-200
Posted 27 January 2011 - 04:28 PM
I've been using a car battery to power my EM-200 but I don't like it because of its weight (and I have to return it to a friend of mine sometime soon). Does anybody have an idea what battery I should get?
Thanks and clear skies
Posted 27 January 2011 - 05:10 PM
Posted 27 January 2011 - 08:03 PM
Posted 27 January 2011 - 10:31 PM
Posted 28 January 2011 - 11:22 AM
Posted 28 January 2011 - 11:29 AM
So you're telling me there's nothing like Celestron's power tank for EM-200 Temma II mounts?
You can certainly operate a Tak mount with a Power Tank (I've done it). Most of us, however, prefer to operate these mounts at 24VDC.
Posted 28 January 2011 - 03:42 PM
You can wire two Powertanks in series to get 24v if that is not he case or you need 700x slew rates.
Posted 28 January 2011 - 06:16 PM
Posted 28 January 2011 - 08:09 PM
Do you have a link for the powertank?
OPT is near you in nearby Oceanside. It carries the Celestron Powertanks. But there are better options than the Powertanks, as mentioned in this thread. In my opinion, your scope needs a larger capacity battery than the Powertanks can provide, unless you gang them up in parallel.
Posted 29 January 2011 - 08:13 PM
Posted 30 January 2011 - 11:58 PM
Careful here. The older EM-200 Temma II can operate at 12v or 24v (24v for faster 700x slews). The new version, the Temma-2M, is 12v only (700x) and will be damaged by a 24v battery.
Mike, I'm not sure if you're referring to my post or not.
If you hook up two batteries of equal voltage and capacity in PARALLEL, the combination will produce the same voltage but double the amp/hr. rating.
If you hook up the same two identical batteries in SERIES, you will double the voltage but retain the same amp/hr. rating.