Sometimes it’s great to enjoy a completely manual telescope and mount, such as a Dobsonian reflector or a ‘grab and go reflector’ and just enjoy astronomy at its simplest, but if you want to find the faintest or objects or try your hand as astrophotography you will rapidly find yourself using more and more electrically powered accessories.This handbook explains the various choices you have for powering your astronomical equipment, from battery chemistries to connectors, and gives advice on keeping rechargeable batteries healthy and details a high-power supply specifically for astrophotography.