Fairly recently I purchased a Skywatcher NEQ6 mount and a fairly high end lithium battery pack to drive it. Unfortunately I'm having a lot of trouble that I believe to be related to the voltage of the lithium battery dropping from its fully charged, low load value of 11.5 volts to something just below 10. The mount manufacturer strongly recommends a power source capable of delivering at least 4 amps at 11.5 to 16 volts.
I hate to replace the battery because I spent a fair bit on the lithium pack and aside from the voltage shortfall it is a nice unit. It's specs say it will deliver 180 watts from the DC port, which would be about 15 amps at 12 volts. There is an AC outlet on the unit that the specs claim will deliver 100 watts at 120 volts, which is about 8 amps. Its a big manly battery with 150 watt hours of storage, it is just falling short on the voltage by 10 to 20%, and this shortfall is catastrophic for my purposes.
1. Buying a AC power supply for the telescope and plugging it into the battery AC outlet. It seems ludicrous to convert DC to AC and then back to DC, but I think the battery probably has the capacity to do that and still deliver 12+ volts at 4 amps. Like I said, its a big manly battery.
2. There are voltage converters online that will convert 12 volts DC to 15 volts DC, which I think would covert my 10 or so volts to about 12.5 volts. I'd just have to pull out the old soldering iron and put it inline on my power cord.
Thoughts on this? Anyone with similar experience? I worry a little bit about the AC power supply approach because I destroyed a Meade LX200 mount using a nominally 12 volt AC converted purchased on Amazon. Apparently the quality of these varies widely and they can have voltage spikes. Wife probably won't throw for another $1700 mount.
Edited by John Tucker, 13 June 2018 - 01:08 PM.