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About Elie Accari
Expertise
low voltage, medium voltage, lighting, installation, EIB, distributed networks, emergency, fire, buildings, airports, Schneider ecodial, ABB docwin, short circuit calculations, elevators, traffic analysis, street lighting

Experience
7 years consultancy in various countries

Organizations
The Institution of Engineers Australia, MIEAust
IEEE
Order of Engineers & Architects

Education/Credentials
PhD in Automation
Masters in intensive computations
BS in Electrical and Electronics Engineering


 
   

You are here:  Experts > Industry > Electric Power/Utilities > Electric Power & Utilities > We have a 24 volt electric...

Electric Power & Utilities - We have a 24 volt electric...


Expert: Elie Accari - 7/11/2003

Question
We have a 24 volt electric scooter and the battery seems like it dosen't get charged enough. Can you tell me how to repair and troubleshoot it also?
                        Thankyou

Answer
Dear Mr. Blanchard,

I think it might by one or more of the following:
1. The battery is near the end of its service life. Usually this will be anywhere from 2 to 5 years, depending on the storage and usage conditions.

The battery should be stored at ambient tempereature, not in a too hot and not in a too cold place. It should not be used till its completely drained. These two factors reduce teh service life.

2. The battery might be too smal. Is it the OEM battery? How much mile/time did the manufacturer specify? you should judge by this whether it's good or not, maybe this is what you bought. Is there room for a bigger (more Ampere Hours (AH))?

3. The charger might be too weak. It the OEM charger? Can you get a bigger charger with, and that's important: "current limiting facility" (so that the battery is fed a decent, constant DC current?

4. Your battery might be good and the charger might be good but the socket outlet where you plug the charger might be in a compromised situation: how many volts do you have there? is it the rated voltage or the house is far or the circuit on this outlet has too many appliances. Measure the volts when the charger is charging. Measure the current going through the battery if you have an amperemeter and know how to connect it in series. Remember you can measure voltages relatively any way you like, but for currents: you have to switch everything off, dismantel some bolts, plug in the ammeter in series, bolt again, run and read.

I hope that helps.
Kind Regards,
Elie

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