Just pondering what inverter I might need to charge my mobility scooter overnight and return to off grid caravanning.
Martin24 said:Just pondering what inverter I might need to charge my mobility scooter overnight and return to off grid caravanning.
ProfJohnL said:Just a heads up, voltage loss along a cable is directly proportional to the current flowing in the cable. So a100W device operating at 12V dc will use about 8A of current , but at mains 230V it will use about .4A. so the losses at mains voltage are much less.
ProfJohnL said:Just a heads up, voltage loss along a cable is directly proportional to the current flowing in the cable. So a100W device operating at 12V dc will use about 8A of current , but at mains 230V it will use about .4A. so the losses at mains voltage are much less.
Woodentop said:I know I shouldn't argue with the Prof but....
An invertor rated 100W does not pull that level of power all the time, only when it is demanded by the load. 100W from a 12V source would actually draw 9A+ as the invertor is nothing like 100% efficient. However draw 25W and the d.c. current will be nearer 3A even if the invertor is capable of 100W.