Shimano Battery Health

grover

Member
Apr 23, 2019
22
11
PT
Hi,
Checking my new bike info, found out that battery health is 32%, should i be worried?
Screenshot_20190615-215524.png
 

flash

E*POWAH Elite World Champion
Patreon
Nov 24, 2018
1,050
988
Wamberal, NSW Australia
Maybe... I'm not sure how @vadII reports battery health or how accurately the SHimano battery is issuing the data. My battery is 99% after two cycles (spare battery I have).

Unless you've done something unusual it's likely the battery is fine and just needs a few cycles to sort itself out, as far as self reporting goes. Generally it would be recommended you give the battery a few close to full cycles to reset the battery gauge and data reporting from the BMS. And often lithium batteries need a few cycles to get up to full capacity anyway (this might be done at the factory. I don't know.)

How is the battery life? It looks new with two cycles, so three to four hours of mixed riding should be the norm(ish) in trail/eco. If it's significantly less than that then take it in to be checked. Any charging errors. How's the gauge? ie: does the range collapse in the bottom half of the battery gauge?

For god's sake don't tell them you're running after market software.. :)

Gordon
 

grover

Member
Apr 23, 2019
22
11
PT
Hi @flash , thanks for the reply.
The battery is new and the range seems ok to me, last week i did a 28km ride with 1200m of ascent. I was mainly on trail mode on the ascents and off on the descents. The duration of the battery was 2h30 of moving time.
I will give it some more charges and see how it goes.
 

grover

Member
Apr 23, 2019
22
11
PT
The only "legal" way to prove the battery health is using the Shimano SM-PCE2 diagnostic tool, isn't it?
 

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