Hello l am a new 88 year old male. About 12 months ago I bought 2 new batteries for my bike, they have not yet been used but I have given top up charges. I have now charged the batteries ready to use but when installed on the bike the controller indicates only half charge. The battery voltages measured at the output terminals is 40volts and 41 volts respectively. I can rule out a controller fault becsuse I have substituted a new one. I will appreciate any suggestions.
Cyclotricity.
- Thread starter John e
- Start date
The display may not be determining whether the battery is a36v one or 48v one as the battery full charge voltage isn't correct.
The batteries should be reading in real time figures 41.5v - 42v when fully charged for a 36v one. So they are likely unbalanced or have another fault.
For now ride the bike and discharge them for a couple of charge cycles and see if the battery voltage balances better and charges higher, also make sure and check the charger charge voltage reads 42v at the chargers charge port.
Other wise apart from that it will need a competant person with battery working knowledge to check them out.
The batteries should be reading in real time figures 41.5v - 42v when fully charged for a 36v one. So they are likely unbalanced or have another fault.
For now ride the bike and discharge them for a couple of charge cycles and see if the battery voltage balances better and charges higher, also make sure and check the charger charge voltage reads 42v at the chargers charge port.
Other wise apart from that it will need a competant person with battery working knowledge to check them out.
Thanks for your post.I have checked the charger voltage and confirmed it is 42 volts. I will see what happens after a few charge cycles as you suggest. Thanks
That's not what I mean. There is often a setting, where you can select which battery you have. If you select 48v, then connect a fully charged 36v battery, it thinks you have a run down 48v one, so half the bars on the display will be missing. Which LCD do you have?
My LCD conytoller was supplied as part of my Cyclotricity conversation kit . It doesn't have a proprietary name but hsving checked the unit and available info. I am satisfied that it is limitef to 36 volt operation. Thanks for your post
I'm trying to tell you something but you're not getting it. One last time: Some of the LCDs supplied with Cyclotricity kits/ bikes have automatic detection of battery voltage. In some conditions, when you attach the battery, they get it wrong. Others have optional manual setting for the voltage, which can also be wrong. I can't help you further unless you indicate which LCD you have.
Maybe I'm misunderstanding you. What makes you think that your LCD has detected and/or is set to the correct voltage?
My LCD controller is a KT-- LCD1. There is nothing in the manual about voltage selection so I assumed it was dedicated to 36 volts but I take your point, it could auto select. That begs the question about what I can do if it. Sorry if I have been slow to catch on but I hope we are now on the same page. I have tried to attach 2 pdf files that together conprise the users manual (2 sides of A4) but when attached the forum site says the files are empty. I am sorry this failed but I doubt the manuel would be any use to you. Thaks for your persistence. Best wishes John e
KT does automatic detection and doesn't always get it right. The solution is to discharge your battery a bit so that it goes below say 38v, then take it off and put it aside, then short the two power connections that it connects to, which discharges the capacitors in the controller and LCD. That's very important, otherwise nothing will change. Don't worry if you get a spark when you short those connections. that's just the capacitors giving up their charge. No harm will be done to you or your bike. The next time you connect the battery and switch on, a new auto-detection will be done, and this time it should be right.
The controller/LCD sets itself to the wrong voltage if you connect a fully-charged 36v one for the first time or an empty 48v one.
I'm not saying this is definitely the cause of your problem, but it would give you the symptoms you describe, so it needs to be eliminated as the cause.
The controller/LCD sets itself to the wrong voltage if you connect a fully-charged 36v one for the first time or an empty 48v one.
I'm not saying this is definitely the cause of your problem, but it would give you the symptoms you describe, so it needs to be eliminated as the cause.
I am very sorry for the late response, I have made previous attempts but could not navigate the system. To get to the point I followed your advice exactly and the problem was immediate resolved. Thank you very much, I greatly appreciated your commitment and in my case your persistence.
Kindest regards
John e
Kindest regards
John e
Related Articles
-
MTF Enterprises announces acquisition of EMU Electric Bikes- Started by: Pedelecs
-
Wisper 806T folding bike wins Which? ‘Best Buy’- Started by: Pedelecs
-
Sustrans calls for protected cycle lanes- Started by: Pedelecs
-
Amazon launch their first UK e-cargo micromobility hub- Started by: Pedelecs
