Desirability of putting battery into sleep mode?

[Ocsid]

General question; with an e-bike featuring a design that if the bike is unused for a period, the battery auto goes into "sleep mode", or can be manually switched into this mode.

What are the arguments for and against routinely manually switching into sleep mode if not sure the bike will be used, say tomorrow. Ie preempting what the designer clearly though desirable if the battery stands unused?

Waking it up, is in my case no more hassle than just touching a button, if the start button is "dead".

That the designer includes the manual initiation feature, and it makes it to the handbook, seems to suggest it has merit over just waiting for it to happen automatically anyway?

Views please as winter coming the bikes use is going to be somewhat more spasmodic.

 

[vfr400]

General question; with an e-bike featuring a design that if the bike is unused for a period, the battery auto goes into "sleep mode", or can be manually switched into this mode.

What are the arguments for and against routinely manually switching into sleep mode if not sure the bike will be used, say tomorrow. Ie preempting what the designer clearly though desirable if the battery stands unused?

Waking it up, is in my case no more hassle than just touching a button, if the start button is "dead".

That the designer includes the manual initiation feature, and it makes it to the handbook, seems to suggest it has merit over just waiting for it to happen automatically anyway?

Views please as winter coming the bikes use is going to be somewhat more spasmodic.

It's just a question of BMS design. Sophisticated ones use a microprocessor, which has to be powered to make decisions about whether it will allow charging or discharging. that power will discharge the battery in time so you don't want it active for weeks at a time. Sleep mode switches off power to that cpu. Obviously, it has to be reinstated before you can do anything with the battery. Sleep mode isn't necessary. Your LCD doesn't have it. Instead, it powers up its cpu when you press the power button. The cpu then latches the power on. When you press the button again, it de-latches the power. I guess some batteries work like that too as long as they have a power button. I'm not sure why they can't all work like that. It makes a lot more sense than sleep mode.

 

[Ocsid]

Thanks vfr400 for your response and I understand the argument you are making.
However, presently we have what we have, and need to decide how we best live with that. I suspect because they provide the provision to override the auto sleep mode, is because doing that is desirable, and that stacks with eliminating the CPU drain you mention. Though in the overall scale of things energy-wise, I feel the amount it takes, must be pretty trivial.
Will start doing it and hope not use up too many of the switch's life cycles by doing so!
Thanks for taking the effort to consider my request and comment.

 

[TedG]

During the Stormont "moped" fiasco our batteries (Volt bikes) lay for 30 months with an occasional top up charge but neither ever showed they needed a charge. I did it anyhow.
Now since Easter that the bikes are "legal" again both batteries are performing as they did before their enforced lay up.
Both giving the same level of performance.
Not sure if a sleep mode was ever in operation, certainly not anything I ever did.