
Not intending it to run the house or anything but to make life a bit more comfortable if with this supposed risk of energy shortage and rolling blackouts rationing areas power supplies
I created this....
rough outline of bits
Timber for box 2x3 ish for frame PTGV1S tongue and grove planks chipboard sheet for base and lid
couple of butt hinges
friction cabinet stay
selection of big wood screws 4" x10 iirc some 8x1 and few others....
1000w pure sine wave inverter
20ah smart charger
double socket
2 of mains plugs
2 110ah sla caravan batteries (deep cycle)
mechanical overload fuse (rather than a awg fuse if it trips you just reset it rather than fumble in the dark with a new glass fuse)
Change over switch for batteries
Smart relays for battery charging
wire of various types for mains connections, tri rated for inverter and smaller 12v wiring for other bits




one thing worth noting no one is going to simply walk off with it it must weigh in excess of 40kg
since i took these ive rewired it added volt and ammeter to monitor battery drain 12v outlet earthing/grounding point.
running it at 1000w it draws about 40-50a off the battery so going by ive got 220ah to play with and that the batteries shouldnt be dragged down past about 20% charge ive got a good few hours of fume-less (yes the hydrogen when charging can be a issue but the box is well vented) almost silent power
ive also added a 12v charging relay to charge it off the cars caravan gray plug or cars alternator