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Doubts about battery

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ZoppaliF
Posts: 6
(@zoppalif)
Active Member
Joined: 2 months ago

Hi Everyone,

just received my neu CPx, double battery.

I noticed that:

Rear battery (A) will use before front battery (B) independently from the charge status;

If I have only B battery the scooter is "dead" (1 batteri in "A" slot works perfect).

 

Is this the correct behaviour?

 

Rgards

ZepileF

 

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Javi
Posts: 69
 Javi
(@javi)
Trusted Member
Joined: 10 months ago

In my case the CPX always uses the "less charged battery". I am not shure what happens if I only have the battery B. What I am shure is that always uses the less charged one. If the less charged one is the B it uses the B and keep the full charged A until  B reaches 20%.

...Javi

 

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Javi
 Javi
(@javi)
Joined: 10 months ago

Trusted Member
Posts: 69

I will answer myself. Today I removed the battery "A" for charging at home and only with the battery B (front one) installed the CPX works perfect.

IMG 20210203 071114

...Javi

 

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alexaraducristian
Posts: 95
(@alexaraducristian)
Trusted Member
Joined: 1 year ago

Check this out: https://batteryuniversity.com/

 

Battery lifecycle depends on some factors. Temperature has one of the most important influence. All tests are done in the ideal conditions of 25 degrees. By example below 0 completely forbidden to charge, and if you plan to ride (so discharge), keep the battery inside the house and bring it in the bike just before riding.

 

SoC and DoD of course contributes a lot on the number of cycles until the battery capacity will decrease to 80%.

 

In short: with charges from 0-100%, you will get around 300 cycles. With every 10% less than full, you double the "lifecycle". If you keep the battery in the range of 30-75%, you may reach easily 1-2000 cycles.

 

Of course you will loose your autonomy if you charge only to 75%. Best is to calculate in advance how much you charge based on your upcoming trip (short trips, charge less, long trips, fine to charge to 90% or 100, but not too often).

 

Have a look on your charger and voltage written on it. By example for a 60V rated battery, maximum voltage is 71.4V. In some countries chargers will come with 71.4V, while in others where warranty is 2 or 3 years), dealers will sale with a 69.7V charger which will bring the battery to a SoC of 90%, so already doubles the lifecycle and will not exchange too many batteries for free (under warranty).

 

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JaLeo
(@jaleo)
Joined: 4 months ago

Active Member
Posts: 14

@alexaraducristian

Thanks a lot 😀 . Very interesting, instructive and well summarized.
I had heard about the temperature problems. I keep the motorcycle in a private garage, during the past snowfalls in my area I kept the battery inside the house as a precaution because in the garage it was around 9º.

Now in winter I hardly use the motorcycle. Later I will do 15 km a day and I was thinking about charging every 3 days, but from what you have explained to me I think I will do it every 2 days to be within that margin. According to my calculations, the average consumption I have is 1.4% per km, so in that range of 30 to 75% I could do 32km. Perfect.

Regarding my charger, I have seen that it is 70.5V 15A. Does that mean it would correspond to a SoC of about 95%? And if so, if I charge up to 100% seeing instrument pannel does it mean that I am actually charging the battery to 95% as maximum?
By the way, I asked the Super Soco distributor in Spain and he told me that the warranty in this country is 3 years.

I'll take a look at that link to learn more, although with your explanations I have already learned a lot.

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curlyboi
Posts: 11
(@curlyboi)
Active Member
Joined: 2 months ago

Lithium batteries hate extremes... Extreme discharge, extreme cold, extreme overcharge, extreme warm.

That being said, the original charger does a good job not to overcharge the battery (even on 100%) because it only uses 70.5 and not 71.4 (which would be more fitting for 17S batteries such as ours).

So just don't let it on 10% in snow for a weak and you are fine 🙂

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JaLeo
(@jaleo)
Joined: 4 months ago

Active Member
Posts: 14

@curlyboi

😀 good advice thanks 👍 

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