Body battery data

4888558 1 month ago

All other sensor work fine, but body battery is not calculated while wearing the band

Top Replies

Justin M 18 days ago +2

Same. Garmin closed the main thread about this (and several other threads) with a "workaround" that doesn't work: https://forums.garmin.com/sports-fitness/healthandwellness/f/index-sleep-monitor…
Justin M 18 days ago in reply to 4888558 +1

Ah, okay, if it's computed on the watch then that indeed seems like a fundamental design flaw. Hopefully Garmin either patches the old watches, adds the functionality to Connect, or refunds everyone…

All Replies

0 El_Director 1 month ago

same, find any fix for this?

0 4579802 1 month ago

...same here.

I am using it with a Fenix 6X so maybe it must baseline again due to its much newer sensor?

0 aushiker99 19 days ago in reply to 4579802

I have Fenix 6x. Battery body doesn't show when wearing ISM.

0 Justin M 18 days ago

Same. Garmin closed the main thread about this (and several other threads) with a "workaround" that doesn't work: https://forums.garmin.com/sports-fitness/healthandwellness/f/index-sleep-monitor/417796/first-night-no-body-battery?pifragment-1301=3#pifragment-1301=4

I follow those steps, and I still have no Body Battery data. Fenix 6 Pro.

Worse yet, I think they closed my support ticket with the same, even though 1) the workaround is combersome, and 2) it doesn't even fix the issue, so it's not a valid workaround.

I don't understand why they'd have to update older watch firmware for this to work ; it should be fixable server side given the data is processed there. In any case, this is Garmin dropping the ball -- laundry a product that doesn't work as advertised for it's longer term customers.

0 4888558 18 days ago in reply to Justin M

From what I understand the watches calculate the body battery, and report it to Connect. They weren't designed to get that data from the app. Only the newer models have software necessary to read and collate body battery data, from Connect.

The firmware (,and probably Connect app update) would be necessary to either let Connect collate the data or to allow older watches to read and sync from the connect app.

It really is a software design flaw, but body battery data is not something all of the devices handle the same way.

0 Justin M 18 days ago in reply to 4888558

Ah, okay, if it's computed on the watch then that indeed seems like a fundamental design flaw. Hopefully Garmin either patches the old watches, adds the functionality to Connect, or refunds everyone that bought Index Sleep Monitor (fully for those who want to return, partially for those who don't). Unfortunately I have low confidence in any of that.

And if the latter, they need to make it more clear which products it's supported with. As of right now, the product page for ISM has a checkmark next to "Body Battery energy monitor" with no asterisk or caveats, which is misleading at best.

0 8073959 16 days ago

Same issue. I’ve tried all below items:

The work around
remove and reset the ISM, then reinstall it
remove the default device, vivosmart 5, then reinstall it

all above tries made no change.

the only thing I noticed is: when ISM is the only device attached to the account in Garmin Connect, it records Body Battery!

and the BB number appeared the next morning after a whole night without ISM’s records, seems worked out by vivosmart 5.

0 4888558 16 days ago in reply to 8073959

That should be correct, if you make the vivo your main wearable, it will not gather data from ism and combine them in connect. It will only record it's own data. You can only do one or the other