Thanks for the replies.
I am using an Astro, and I dream of one day having a hangar to use. I like the idea of the heater, but this isn't practical for me.
I have been raising the collective several times with the mixture set to full. With the collective raised, I'll pump the throttle. Some people say pump the throttle up to 15 times. Surely that is too much?
This morning it took over ten minutes, before I had to resort to the jump start (external battery ) technique due to flat R44 battery. When it did start, the Alt light remained illuminated for 40 secs, before turning off. The Alt load meter was very positive before returning to the normalised state. I viewed that this was due to the alternator output being drained by the weak R44 batt.
Andy M