Speed Posted January 18 Share Posted January 18 HI Any recommendations for a power tank purely visual so to drive the scope and a few dew bands I have been using a jump starter for many years but looking for something more modern Thanks Link to comment Share on other sites More sharing options...
+Bino-viewer Posted January 18 Share Posted January 18 I like the Tracer LIPO cells, but they are pricey now. I used to have two, but believe it or not i lost one of them. Don't ask me how 😒 FLO used to sell them but no longer do. But they are still available. https://tracerpower.com/products/batteries/tracer-12v-10ah-lithium-polymer-battery-pack/ I also have one of the newer Celestron cells (the bigger one) Don't use it much, and prefer the tracers. https://www.firstlightoptics.com/batteries-powerpacks/celestron-lithium-lifepo4-powertank-pro.html HTH, Rob 🙂 Link to comment Share on other sites More sharing options...
Speed Posted January 18 Author Share Posted January 18 yes I was looking at the Celestron ones and the Bresser will look at the Tracer Link to comment Share on other sites More sharing options...
+Bino-viewer Posted January 19 Share Posted January 19 The Celestron comes in two sizes : the smaller one may well be sufficient, but not sure if powering a mount AND dew bands at the same time is viable, as they would both draw quite a bit of current. The bigger unit is quite big and heavy. The Celestron has a wrap around cord to supposedly hold in in place on a tripod leg, but tbh, it's not very well designed. It also has a red / white light option which is mega bright. Lots of size options with the Tracers so you could buy 2 smaller cells to suit your needs. They also have a nice neoprene jacket to keep the battery well insulated and dry from dew. I'd personally recommend the Tracer option but like they say in the US, 'your mileage may vary' Link to comment Share on other sites More sharing options...
+Stu Posted January 19 Share Posted January 19 Anker do all sorts of power tanks etc. Really good quality. I've had a small one for phones/vapes/tablets for about 5 years and it's still going strong. Link to comment Share on other sites More sharing options...
Speed Posted January 19 Author Share Posted January 19 Hi I have also been looking at the Bresser Omegon which gets a great review opn youtube and the Total cool ( which looks identical to the Omegon ) Link to comment Share on other sites More sharing options...
+Bino-viewer Posted January 20 Share Posted January 20 Let me know Dave if you want to go down the Celestron route. I have the big version, but would be happy to sell it at a bargain price. Its a few years old, but has hardly been used. Link to comment Share on other sites More sharing options...
+Bino-viewer Posted January 20 Share Posted January 20 8 hours ago, Stu said: Anker do all sorts of power tanks etc. Really good quality. I've had a small one for phones/vapes/tablets for about 5 years and it's still going strong. They look a step up in quality from the usual offerings. Wow they have some that are £2000 a go....😲 Link to comment Share on other sites More sharing options...
+Stu Posted January 20 Share Posted January 20 5 hours ago, Bino-viewer said: Wow they have some that are £2000 a go....😲 2000Wh might be slight overkill for an astro setup 😄 Link to comment Share on other sites More sharing options...
Speed Posted January 20 Author Share Posted January 20 so I am running a skywatcher EQM 35 pro that pulls 3A and a couple of dew heater bands so what size / output would I need please Link to comment Share on other sites More sharing options...
Clive Posted January 21 Share Posted January 21 The EQM35 won't pull 3A continually. I did measure mine years ago and when it was just tracking (i.e. not slewing) I'm sure it was much less than 1A. But lets assume with a few slews the average is 1A so at 12V that's a power consumption of just 12 W. You don't mention your dew heater power consumption but assumimg 4W each that would mean a total power consumption of 20W. I'm assumimg you buy a LiFePO4 technology battery (as they have a nominal voltage of 12.8V as opposed to other Li batteries nominal voltage of just 11.1V) so that means you would need a battery with a capacity of at least 20W multiplied by the maximum number of hours you expect to use it in a session. For example, a 6 hour session would be a total of 120 Whr so a 10Ahr would more than suffice. Link to comment Share on other sites More sharing options...
Speed Posted January 21 Author Share Posted January 21 Hi Clive thanks for that Link to comment Share on other sites More sharing options...
Speed Posted January 21 Author Share Posted January 21 looking at this Fox Halo 48K Fishing Power Bank Pack - CEI177 very small qnd looks just like the Omegon Link to comment Share on other sites More sharing options...
Speed Posted March 10 Author Share Posted March 10 The Fox Halo power bank 48k is really good I have 10 hrs running the mount and still have lots left so I guess I could get 15-20 hours depending on how much slewing is done recommend this Link to comment Share on other sites More sharing options...
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