Storing at full charge reduces cycle life and effective capacity over time. You don’t need to charge it after the ride either unless the indicated capacity is below say 30% (lithium ion batteries have very low rates of self discharge so this is perfectly safe). Best storage state between rides is 30-70% (the so-called “Goldilocks zone”
); don’t charge to 100% unless you are certain you will be going out within 24hrs.Sorry, but there are two inaccuracies in the above......I used to fly RC planes + helis and had lithium polymer (lipo) batteries to power them, EBikes use lithium ion (lion) batteries.
We had very smart chargers that monitored and balanced individual cells during charging to avoid overheating and fire risks associated with lipo batteries.
It was possible to see how much charge a battery actually took to assess it's health (capacity).
Lion batteries are generally considered to be much safer than lipo batteries.
.Sorry, but there are two inaccuracies in the above...
PS - Yes, I too have >30 years experience in RC, the last 15 or so flying electric powered aircraft
- Lithium ion is the overall battery chemistry "family"; both Lipos and LiFe (Lithium Iron PO4 technically; this is the cell chemistry in almost all ebike batteries) are part of that overall group. As you say LiFe is safer, primarily because it does not have the gel layer through which dendrites tend to form more readily. These can cause internal shorts and also increase internal resistance (IR) over time, reducing the ability of the pack to deliver high currents.
- Seeing how much charge a battery will take is not on its own an effective measure of battery health; it's only one component. You are correct that if it's awful the battery is probably dead, but equally I have seen plenty of packs of different chemistries that will take a charge but won't perform during discharge. Discharge capacity at different loadings and IR (both of which are inter-related) are far better indicators of pack health, but there are other factors too (like the temp and terrain) which can influence the real world performance drastically.
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@KuRi LBS did not find any issues with battery and told me to keep an eye on it and come back later if battery health keeps dropping. The battery health was not dropping beyond 97% when it had 10 cycles (not bad). Then one day bike reported an error when I powered it on. Error was indicating battery pack issue. I brought bike back to LBS and Giant replaced both battery and charger within few days.
@57 Reaction does app show how many total miles did you do on your bike? Or you need to record each ride and sum it up or estimate manually?
Hi I am looking at buying a used Trance E+2 and the diagnostic report shows capacity at 96%, attached is the report is this a good buy, the price is really good for a 2019 model with 700km.
Thank you KuRi, according to the bike shop that tested it they say that the control was changed. Thanks for the feedback. The price is too good to miss out on for this bike.
I think you need to connect to the bike directly. I tried getting all bluetooth messages from the control and all I got is the same you get on the app
