Excessive battery consumption

There are three models of F5+, with three different battery sizes. As far as I know, all three have exactly the same power consumption.

So it seems obvious that we can't compare our battery usage in %/day or %/hour without also mentioning, which of the 3 watches we own.

Yet everyone are doing exactly that!

I have an F5 + 47mm, and I come from a normal F5. What seems to me is that although there has been an improvement in the product in many respects I expected, beyond the technical indications of the product, a consumption in line with the F5. Instead I notice a consumption of 10% more than before.
In 24h with 2 hours of gps and normal use as a smartwatch I have a loss of almost 20%, if not more.
I hope it is a fw problem, otherwise if there were no maps it was much better the 5 from this point of view that I forgot to recharge it from how little it consumed.

You should expect shorter battery life with your F5. Official Garmin numbers (all of them are "up to...":

Smartwatch mode with activity tracking and 24/7 wrist-based heart rate monitoring:
F5: 14 days
F5+: 12 days

GPS mode with wrist-based heart rate:
F5: 24 hours
F5+: 19 hours

UltraTrac GPS mode with gyro-based dead reckoning:

F5: 75 hours
F5+: 42 hours

https://www8.garmin.com/manuals/webhelp/fenix5/EN-US/GUID-694C4E14-D875-479F-AFB1-2A6A582FF506.html

https://www8.garmin.com/manuals/webhelp/fenix5plus/EN-US/GUID-694C4E14-D875-479F-AFB1-2A6A582FF506.html

yes, I knew it!! I expected only a slightly lower consumption .... I have the f5 + from Tuesday evening and at the moment I'm at 40% of battery .... frankly I was expecting a slightly lower consumption .....

I have a even bigger problem. I have Fenix 5 plus and the consumption is about 3% per hour for ordinary use (no GPS). 

My problem is that  I have bought it from ebay and do not have warranty. 

Do you know what can be the problem for this issue? it is a faulty battery or faulty mother board?

Do I have any option to repair it?

Thanks

I have a new 5 Plus, and my gut feeling is about 20-25% battery usage daily, with about 1 - 1.5hr GPS+GLONASS usage.  I had an Vivoactive HR before, which lasted about 1 week between charges.  I see lots of references to fairly significant changes to battery consulting starting with firmware 7.10

I have the F5+ S. And on average battery consumption is 1.6%/hr according to MyBattery widget.
Specs for 5s+ are up to 7 days smartwatch mode and 11u with gps. 

Was 100% full Saturday night.
And since then (3 days) it's on 13% I did 2 half hour bike rides GPS plus OHR no music (commute to work and home) and 2 runs of 45 minutes workouts from a trainingplan so with vibrations etc. during run with GPS+GLONASS and OHR or HR cheststrap.

24/7 OHR enabled sleeptracking, steps etc. and 30% light at gesture after sunrise. DND between 22.30-7.30 and only Whatsapp, call and text notifications on watch with a custom watch face. 
I guess 2.5 hours GPS is 20-25% and using OHR etc. will cause the watch to drain battery quicker than the 7 days, let's say will half the time? I think 3 days with a few hours of GPS+OHR is what we can expect from the 5+s?

I have to inform the same issue with Fenix 5 Plus, on FW 6.90 i had excellent battery life, and when i updated to 7.10 it all started to drain fast. On 7.60 FW i lost 65% without ANY activity for 1 and half day, even bluetooth was off and battery drained. I uninstalled watch face that i had and it still drains fast. Garmin fix battery consumption issues on next firmware!

The first couple if weeks on 760 battery life was good but since a week it's draining again. Nothing changed, no new apps or widgets...