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Makes And Models => Zero Motorcycles Forum | 2013+ => Topic started by: sharagan on August 19, 2022, 05:28:02 AM

Title: time to balance the battery
Post by: sharagan on August 19, 2022, 05:28:02 AM
Hi Everyone,

just want to share my observation and check if others have the same.

I had an imbalance of 50mV after 4 months of never charging to 100% so I went ahead and plugged the charger in and let it balance. It took 4 days to get the balance back to 2mV. I was checking it every day and saw that it reduced roughly 12mV each day. (FXS 7.2 long brick Year 2020)

Thanks in advance for your insight.
Title: Re: time to balance the battery
Post by: ESokoloff on August 19, 2022, 09:50:36 AM
My 2016 DSR had its battery replaced last July (14.4) & it now has 16k miles & shows 15 charge cycles but only about 1/3 of those were to 100%.
In an attempt to maximize the health/life of the new battery I installed a spring wound 0-4hr & an electronic 3hr timer along with a toggle switch so I’m able to charge from 0-7hr or continually.
I use 70% as a charge target & figure 60min./10% SOC
I just checked my cell imbalance & its 2mv so in my case, active cell balance hasn’t been an issue.
Title: Re: time to balance the battery
Post by: DerKrawallkeks on August 19, 2022, 03:58:21 PM
Does Zero balance the cells only when fully charged or at any point?
I very rarely fully charge my bike, but my cell balance is consistently at 5-10mV.
Title: Re: time to balance the battery
Post by: sharagan on August 19, 2022, 04:13:52 PM
my understanding is that it balances only at full charge when the charger is connected. Usually I also have between 5-12mV. In my case regen braking seems to increase the imbalance.
Title: Re: time to balance the battery
Post by: wadejesu on August 25, 2022, 08:57:03 AM
How do you measure imbalance?
Title: Re: time to balance the battery
Post by: Bodo on August 25, 2022, 12:15:51 PM
Battery balance is shown in the app on the battery tab for example.
Title: Re: time to balance the battery
Post by: opengl on August 25, 2022, 10:32:07 PM
Unless you have a gen3 bike, in which case you are out of luck since Zero decided this was no longer important information to provide in the app.
Title: Re: time to balance the battery
Post by: prbpci0 on August 26, 2022, 08:54:22 PM
So, for the Gen 3's, is it safe just to leave it charging for days at a time in the hopes that it'll shut itself off when the balancing is complete?  My SR/S has shut off just once or twice on its own after reaching 100%.  Is it recommended to leave it on the charger until this happens every so often?  Monthly?
Title: Re: time to balance the battery
Post by: wadejesu on August 28, 2022, 06:00:22 PM
So to balance you just leave charger plugged in, don't have to anything else but monitor