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Ultra training for beginners

2 lurkers | 165 watchers
6 Jun
12:27pm, 6 Jun 2025
68,211 posts
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EvilPixie
Luckily I’m only 30m and hopefully not much more than 12hrs
6 Jun
9:44pm, 6 Jun 2025
17,939 posts
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Badger
I spent some accumulated John Lewis vouchers on a Fenix 8 (that was cheaper there than anywhere else in any case) and the battery life is extraordinary; it doesn't even seem to make any difference if you're navigating or not. 29% of the charge for a 100k with nav on throughout (and I wasn't fast).

@faganj I have a Fenix 5 that nobody has wanted to buy and I would be happy to pass that on to you if the two-watch scenario 0isof interest. Hasn't been used for a couple of years but it was good for 16 hours or so then and I would rather someone was using it than it gathering dust.

One interesting thing about the Polar Grit 2 that's just come out is that Polar will replace the battery on it for a flat fee. With that and the Una watch that's just funded on Kickstarter, it would be nice to think that the industry is starting to move to long term serviceability. But it isn't entirely in the interests of companies who only make money when they sell hardware...
7 Jun
6:46pm, 7 Jun 2025
21,495 posts
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flanker
It's going to be interesting seeing where the Una goes, and whether it can break into the established market or not. It's a great concept, but it's going to have to be better than the equivalent Garmin to stand a chance given all the established infrastructure. Even the likes of Polar & Suunto have never really been able to compete.

I do know people who've replaced the battery in their Fenix as the 3rd party batteries with O-rings are readily available online. If mine ever gets to the point battery is an issue I may give it a go.

And stop tempting me with the F8. Maybe when the 9 comes out and the prices drop...
7 Jun
6:49pm, 7 Jun 2025
68,270 posts
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EvilPixie
My F5 was replaced as the start stop button stuck
8 Jun
11:00pm, 8 Jun 2025
52 posts
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faganj
Thanks Badger. I’ve bought a battery and docking thingy to try out. I did a long run yesterday and the watch lost 65% battery in 5 hours with maps on for a lot of it. I’m hoping to be round in ~12 hours in July, so I’m thinking it will need a couple of top ups. If that’s not working out, I may come back to you.

I’ve got a day hike on Tuesday so I’ll try the battery then.
9 Jun
8:54am, 9 Jun 2025
1,651 posts
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Sam Jelfs
@faganj just check in your settings that USB mode is set to Garmin and not mass storage, otherwise when you plug in the battery you will not be able to use the watch iirc.
9 Jun
11:15am, 9 Jun 2025
53 posts
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faganj
Sam Jelfs wrote:@faganj just check in your settings that USB mode is set to Garmin and not mass storage, otherwise when you plug in the battery you will not be able to use the watch iirc.


Thanks - that’s helpful.
9 Jun
11:23pm, 9 Jun 2025
21,498 posts
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flanker
Something I forgot to mention earlier. Make sure your Garmin isn't connected to your phone via bluetooth. Constantly synching metrics such as steps, HR, etc has a significant battery drain.
10 Jun
9:47pm, 10 Jun 2025
54 posts
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faganj
flanker wrote:Something I forgot to mention earlier. Make sure your Garmin isn't connected to your phone via bluetooth. Constantly synching metrics such as steps, HR, etc has a significant battery drain.


Thanks. I’ll turn it off on my next long run to see what effect it has.
13 Jun
10:41pm, 13 Jun 2025
56 posts
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faganj
Tried charging on the go today and it worked well. I think I’ll need to charge once, or possibly twice in the race. Didn’t take long to go from 48% to 83%, so may just need one longer charge.

Thanks for all the advice - it’s been really helpful.

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Maintained by jacdaw
I'm planning to run a couple of ultra events next year and I'm looking for some general training i...
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