Just a note on the jumper packs, A lot of them run 2X 7AH batteries in them which means you will only have 14ah in total. Should be enough for most night but adding everything might start to push the limits for a full night of viewing.
Also note that the batteries they use shouldn't be discharge less then 80 per cent of there total value. This means a 14amp hour battery would only give you 11.2 amp hours. They are also good for around 2000 cycles.
Just a thought!
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