Pops Thompson Used a 50ah lithium for the first time today and surprisingly it did not run for as long as expected - just under three hours in fact. We’re my maths wrong, or am I missing something as 50ah gave I assumed 50 hours @ 1amp and as I was only drawing 3 amps it should have lasted 50 divided by 3 giving me a total of… well I got it totally wrong obviously 😕
LeoPaterson 50Ah, 50 hours of use at 1 Amp. 1A*50H=50Ah Assuming your device uses 17A, it will only last 3 hours 50Ah ÷ 17A ≈ 2.94H
Pops Thompson Thanks Leo but as said it only draws 3A (the device is 12v 55lb thrust outboard) so not sure how that adds up. The battery has Bluetooth facility and that’s what it draws at mid test speed - albeit without a load - according to the data provided. Guess I’ll need to look at it again in real time when out on the water. :-)