My battery box (I call it my powertank) continues to evolve to meet my needs and is now outfitted with two seperate and fused 12 volt sources of electricity and a 400 watt modified sine wave inverter. This will provide me with all the juice I need to run my 12 volt laptop charger, the telescope, dew heaters and lights if needed. The red light comes in handy in the dark when working with my imaging gear, it gives me a bit of low level illumination to assist with slewing and cables and remains off most of the time. The charger shown in the background is a 3 stage unit that Walmart sells and is ideal for maintaining the 105 amp hour deep cycle battery in the box.
An added benefit of this unit is that in the event of an electrical outage, it will power the small fan on my woodstove to allow me to heat my home in an emergency, or power a radio for emergency information, so it really serves multiple purposes.
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