Power manager

Does the FR 245 now feature the power manager facility/system?

No.

Is it possible for me to set it so that the standard 24hrs battery life increases to 30hrs with the watch using gps the whole time?

Very unlikely. Even the declared 24 hours I would call it a stretch.

Can the 245 work for me or do I need to buy the 945?

It might, if you carry a powerbank with you, so that you can charge it during the run.

Thanks for that. I guessed as much. Interesting, a power back - but a bit  impractical though I could keep topping up the power when I stop for 20 min breaks - not healthy for the battery, 20 min charge bursts??

I've sent you one reply to your comment but here's another: bear in mind that all I do is run, what should I get, if the 245 battery won't be enough for me, the 945 or, for the same price, the Fenix 6 Pro, no maps/music/wifi? 

not healthy for the battery, 20 min charge bursts??

Don't worry about that. It will have no negative impact on battery, especially when dane occasionally.

the 945 or, for the same price, the Fenix 6 Pro, no maps/music/wifi?

I'd recommend the 945. It's much lighter which makes a difference when doing ultra runs.

So, might be the answer, a 245 and a power pack, that should give me 30 hrs?? I reckon I'll have 2.5 hours of charging time during the run.

Makes that much of a difference, the weight? I tried a 51mm Fenix 6 on today - yes, weighty but hardly a ton ball and chain to drag along. You'd take the 945 over the 245? the 945 over the F6?

Makes that much of a difference, the weight?

That's very individual. More a question of comfort than impact on performance. A bigger guy with heavy arms might not notice the additional weight. I am relatively light with slim arms, so for me it makes a difference.

I would take the 945 over 245, and 945 over F6, unless I would really badly need the additional battery which the F6X Pro provides (at additional cost of money and weight).

Thanks for that tmk2! I believe that the power manager is on the F6 Pro (the 47mm), too?? Plans, I hear, to intro it on the 945 but it's not on there yet. The extra battery life is a plus. Got a 160km run coming up - with walking periods and toilet, water, food and physio stops, the 245's 24hrs wouldn't be enough. 35 hrs gps use should be enough but if I can extend it, it'll give me peace of mind.

I believe that the power manager is on the F6 Pro (the 47mm), too??

Yes, but still the F6X provides the longest GPS-enabled battery time of any Garmin wearables, significantly longer than the F6 Pro.

I hear, to intro it on the 945 but it's not on there yet.

I find it unlikely.