Rockerduck
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Aug 2, 2018

Re: S1 Pro battery draining when not in use

I just unplugged my S1 to start a 5 day battery drain check. Thanks Sam.

Sam_Spoons
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Sep 17, 2019

Re: S1 Pro battery draining when not in use

I charged mine again and left it on Friday afternoon (unplugged and switch in the middle/off position), I will check it next on Monday night.

My worry is that the 'fix' only reduces the issue rather than curing it completely, rest assured I shall be testing my final replacement thoroughly before accepting it as 'fixed'.

PZ
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Re: S1 Pro battery draining when not in use

I'd need another one or two S1s for product presentations in a factory hangar.

Are the new ones ok or do they also suffer from the battery drain illness?

djharryg
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Aug 28, 2019

Re: S1 Pro battery draining when not in use

It's a mystery.  Really hush hush stuff about which ones are affected.  There's a fix coming. But, there's no hint of what might be causing it. Or when the fix is coming.  

(Not the best answer).  I'm sorry.  

The battery issue seems to only affect batteries that are just sitting for awhile.

Sam_Spoons
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Sep 17, 2019

Re: S1 Pro battery draining when not in use

PZ posted:

I'd need another one or two S1s for product presentations in a factory hangar.

Are the new ones ok or do they also suffer from the battery drain illness?

Bose have not said whether they have discovered what is causing the issue so the only safe assumption to make is that a new S1 is likely to have the same problem. But not all S1's have the issue though, I suspect, the number is much higher than thought as many that do have it will go unnoticed if owned/used by 'compulsive chargers'.

To be clear the problem is that a fully charged Bose S1 that has the issue will drain it's battery, when switched off, to zero in the space of a few (5-10) days so it will only manifest itself if you leave an S1 unplugged and switched off for a few days. If you charge an S1 prior to use the battery life is not affected so it may be that your usage is not affected even if the S1 has the problem.

HTH

Sam_Spoons
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Sep 17, 2019

Re: S1 Pro battery draining when not in use

djharryg posted:

It's a mystery.  Really hush hush stuff about which ones are affected.  There's a fix coming. But, there's no hint of what might be causing it. Or when the fix is coming.  

(Not the best answer).  I'm sorry.  

The battery issue seems to only affect batteries that are just sitting for awhile.

The issue is of the S1 slowly draining the battery when it is switched off. If you remove the battery it will retain it's charge for several weeks as expected of a Li-Ion system*, if you leave it plugged in it will keep the battery 'topped up' and if you use it frequently you will not be aware if it has the issue.

* though for some reason Bose have apparently implemented a 'sleep mode' whereby the battery will go to sleep after 30 days, needing to be plugged into the mains to re-awaken it.

PZ
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Re: S1 Pro battery draining when not in use

Thanks, Harry and Sam,

it's not really encouraging if Bose is still producing and selling units they have to repair later. Looks like they have no idea about whats going on. I also think their secretiveness is not a good way to handle the issue. I cannot image to treat my clients like that.

But who cares, I will survive this! 🙂

 

djharryg
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Re: S1 Pro battery draining when not in use

My gut feeling?  It's a not so reliable/consistent battery that was used in certain units getting made. Not Bose's fault. It's probably a battery that was obtained overseas and there's no consistency in the manufacture of those batteries. I don't think there's anything wrong with the S1. (which I love)

Perhaps the supplier of the batteries changed.  So, certain units were made with batteries of lesser quailty.

I'm almost certain that's what it is.  

Let's start cracking the battery cases open and take pics to compare what they look like.

Michael M
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Aug 8, 2019

Re: S1 Pro battery draining when not in use

djharryg posted:

My gut feeling?  It's a bad battery that was used in certain units getting made.  It's probably a battery that was obtained overseas and there's no consistency in the manufacture of those batteries. I don't think there's anything wrong with the S1. (which I love)

Perhaps the supplier of the batteries changed.  So, certain units were made with batteries of lesser quailty.

I'm almost certain that's what it is.  

Let's start cracking the battery cases open and take pics to compare what they look like.

I don't think that's very likely. When I first reported the issue, Bose sent me two replacement batteries (I have two S1 Pros). That didn't solve the issue. I was, also, sent replacement S1 Pro units over time and they all had the same issue. If the batteries were bad, they wouldn't hold a charge when removed from the S1 Pro and stored but they do. To be honest, I think there are people that have the issue and don't realize it because they use the S1 Pro so frequently that it doesn't sit long enough to drain or, as one of my friends does, they don't use the battery at all. He's not interested in operating it off of the battery so he plugs it in at every show.

Sam_Spoons
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Re: S1 Pro battery draining when not in use

Yup, agreed.