Can not start - Electric

Hi,

My bike is not able to start using electric switch and I have to jump start
since yesterday. When I pressed the starter button, it gave me
"de..de...de.." sound.

It happened before (~1 year ago) and the problem went away after I charged
the battery (sealed type). With that experience, I charged the battery
regulary (3 to 4 months interval)

The latest date of charging the battery was on 29 Aug, could the problem
come from the starter coil?

Model of the bike: Suzuki Maruader GZ125.


Thanks in advance for any pointer.

 

Sounds like the battery is, actually, dead. The noise is coming from the
starter relay. It could be a defective relay - run a wire to bypass it
and see if the starter motor turns.

 

(The Older Gentleman) wrote in

You can check for a dead battery by measuring its voltage while thumbing
the starter.

If it starts out at something 12 volt-ish and then plummets to a lot less
(like 7 volts) when you hit the starter, the battery's toast.

 

My understanding was that battery memory applied only to nicads,
not to lead acid.

 

That's correct. Not only that, but the "memory effect" only applies to
nicads under certain specific circumstances that rarely happen in
regular use. Most often nicads die from overcharging, pure and simple.

-Don

 

If I remember correctly, battery memory resulted from a
repeating cycle of light discharges/recharges and was
cured by a deep discharge/recharge.

Solar and off-grid folks get very serious about their
battery maintenance, and I used to occasionally browse
Home Power and read some of this stuff.

 

Rob Kleinschmidt may have written:

This is correct. Small metal hairs/fibers/dendrites form between the
plates causeing tiny short circuits. A charge after a deep discharge
would have enough current to burn out the short circuits. NiCad
batteries are particularly prone to this problem, and early chargers
were not very good. This caused some myth and folklore about these
batteries which has carried over to other rechargeable batteries.

Li-ion, NiMH, and lead acid batteries do not suffer from "memory." Lion
has a short life. Li-ion and NiMH suffer from a fast charge and
overheating. Lead acid suffers from a deep discharge.