I've just built myself a battery pack similar to this
one, which I'm quite pleased with. I'm just trying to decide on the fuse to use. I've got a 15 amp on the charge circuit, but a 5 amp fuse on the power circuit. The usb sockets have a max of 3.5 (1 + 2.5) and the Celestron manual just a 750 mA supply. I have a Celestron cigarette lighter adapter, which may or e fused (I haven't opened it up and can't find any confirmation on the web).
So is a 5A fuse a risk to the telescope, not enough or about right do you think?
Thanks,
PS I'm really impressed with the CTEK mx5 charger, rescued a battery my scope killed, which my previous charger wouldn't touch.