What is the best practice for maximizing battery longevity?

[SunsetRunner]

Is there a range to keep the charge within that helps maximize longevity. Assuming Li-Po batteries like the Versa 2 has are similar to Li-Ion ones usually found on smartphones, would keeping it between 50-65% (while incredibly tedious) be a good baseline to maximize the battery lifespan. Of course, I could lean on a more reasonable range from that, like 30-85%

[Guy_]

Hi @SunsetRunner  - as you are interested, here is a post on the matter. How best to get the maximum longevity from the watch battery? 

[SunsetRunner]

Thank you guy! I actually saw your comment after some deep searching before i posted my question. Do we know if Fitbit answered your question in regards to "For cars keeping the battery within the 25%-80% charge state is often recommended, However with circuitry this may already be the visible 0-100% portion. Only Fitbit can answer what is the real amount available to users."?

I was surprised (and bummed) when I saw your post didn't have much discussion as battery longevity is a big thing.

Personally i plan on keeping it between 20 and 80% with showers as my charge time (probably charge it every few days).

[SunsetRunner]

Can't seem to edit so tagging you here @Guy_ 

[Guy_]

Hi @SunsetRunner -  thanks for your feedback and interest, the issue is probably not many people come to the forum from all the owners, and few have interest in how long the battery lasts or the post is not easily findable, but...

From measurements,

• the constant current required to charge a li-ion battery is reduced to 1 ma or 0 ma when 100% is reached, so it would seem the on board circuitry manages it well and the 100% is in the usable portion of the battery, though having to wait 15 minutes for the last 1% seems unproductive,
• on the other end when charging from 5% battery it takes a while longer to add 1% initially so may be this is handled well too

The number of cycles is an important factor. I've done 118 charges in 470 days. The battery still should be good for 6.5 years.

Heavy loads, such as GPS may not be very pleasing for the battery if done often.

[Guy_]

@SunsetRunner  - if you have any comments perhaps posts them in the main discussion, it will make it more visible and others might join in.