OP
UTC

Lurker
Vespa gtv 250
Joined: UTC
Posts: 2
Location: Dublin
 
Lurker
Vespa gtv 250
Joined: UTC
Posts: 2
Location: Dublin
UTC quote
Hi guys, first time posting. I have a 2007 gtv 250 and the battery started going dead quite recently. It charges up in about 45 minutes and lasts about 2 weeks but goes flat again. Anyone know what is the cause?
@steelbytes avatar
UTC

Veni, Vidi, Posti
2019 GTS300 Supertech E3 60,000km
Joined: UTC
Posts: 5723
Location: Batmania aka Melbourne, Australia
 
Veni, Vidi, Posti
@steelbytes avatar
2019 GTS300 Supertech E3 60,000km
Joined: UTC
Posts: 5723
Location: Batmania aka Melbourne, Australia
UTC quote
How old is the battery?
@jakem avatar
UTC

Addicted
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 662
Location: Brighton, England
 
Addicted
@jakem avatar
Vespa Sprint Sport S 125cc
Joined: UTC
Posts: 662
Location: Brighton, England
UTC quote
Lead batteries lose some charge every week. Once they go down below 50% charge, they get heavily damaged and then they never go back up to full charge.

If you're not using the scooter very often, consider having a battery tender to maintain the battery, or look at lithium battery options.
OP
UTC

Lurker
Vespa gtv 250
Joined: UTC
Posts: 2
Location: Dublin
 
Lurker
Vespa gtv 250
Joined: UTC
Posts: 2
Location: Dublin
UTC quote
Hi again and thanks for the quick reply. I have the bike 2 years and the battery wasn't new as far as I know. Its a nano gel battery, dynavolt mg12-bs-c
@marret avatar
UTC

Hooked
2016 GTS300 ABS
Joined: UTC
Posts: 255
Location: FL and VA
 
Hooked
@marret avatar
2016 GTS300 ABS
Joined: UTC
Posts: 255
Location: FL and VA
UTC quote
Sounds like it might be time for a hew battery. Can you check voltage and track a few days? What is voltage when running and a few minutes after shut down?
UTC

Hooked
LX150
Joined: UTC
Posts: 204
Location: Belle City
 
Hooked
LX150
Joined: UTC
Posts: 204
Location: Belle City
UTC quote
Given that you've had it for two years and prior usage was unknown, I'd replace it and keep it on a battery tender. Do some research and get the best battery you can. I like the Yuasa (traditional) and Odyssey (for AGM) and the new lithium iron batteries have advantages for many.
UTC

Hooked
2007gts250ie
Joined: UTC
Posts: 229
Location: n. carolina
 
Hooked
2007gts250ie
Joined: UTC
Posts: 229
Location: n. carolina
UTC quote
welcome to MV. Might be time for a new battery. I also recommend a battery tender. There is a chance of a non normal electrical draw somewhere in the wiring. An amp meter can detect and help find where any draw may be. Auto parts stores in the USA often will load test a battery for free, perhaps they do so near you.
@larrymk avatar
UTC

Molto Verboso
Vespa Super 300
Joined: UTC
Posts: 1878
Location: AZ
 
Molto Verboso
@larrymk avatar
Vespa Super 300
Joined: UTC
Posts: 1878
Location: AZ
UTC quote
I have my battery tender hard wired to my battery and sitting in the pet holder via a hole drilled in the pet holder so very easy to access when I need to attach it to the electric socket. I live in AZ so in the summer it gets very hot and that does reduce the battery life.
@wleuthold avatar
UTC

Veni, Vidi, Posti
2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
Joined: UTC
Posts: 5228
Location: Jacksonville, Florida
 
Veni, Vidi, Posti
@wleuthold avatar
2006 Vespa GT (Rocket): 2007 Vespa GT (Vanessa): 2009 Yamaha Zuma 125: 2018 Yamaha Xmax (Big Ugly), 2023 Vespa GTS300 (Ghost)
Joined: UTC
Posts: 5228
Location: Jacksonville, Florida
UTC quote
When you can ride year round and actually ride your scooters, they don't need battery tenders.

I have never used one and get good battery life out of all five of mine.

They each get ridden regularly with the least used one getting a good ride in at least every three weeks.

None of them has ever seen a tender.

Bill
@californiacruising avatar
UTC

Addicted
2015 Sprint 150, 2018 GTS 300
Joined: UTC
Posts: 894
Location: SoCal
 
Addicted
@californiacruising avatar
2015 Sprint 150, 2018 GTS 300
Joined: UTC
Posts: 894
Location: SoCal
UTC quote
I hear the new age light weight batteries are less forgiving than the old standard when you let them discharge.

Personally I would never own cars or motorbikes that my family and I couldn't run a tank of gas through per month.
@crazycarl avatar
UTC

Ossessionato
2007 250 GTS, 1980 P200E, 2010 ThunderFly 190 (SOLD) 2015 Yamaha SMax (SOLD)
Joined: UTC
Posts: 3404
Location: Springboro, OH
 
Ossessionato
@crazycarl avatar
2007 250 GTS, 1980 P200E, 2010 ThunderFly 190 (SOLD) 2015 Yamaha SMax (SOLD)
Joined: UTC
Posts: 3404
Location: Springboro, OH
UTC quote
I would recommend getting an Absorbed Glass Mat (AGM) battery. They are a bit pricier than traditional wet cell batteries, but their construction makes them less prone to impact shock damage and they hold a charge longer. They also have lower internal resistance, meaning you can get more cranking amps out of them.

Motobatt makes very good AGM batteries, but I've also had good luck with AGM models from Batteries Plus. The last one I bought lasted 7 years, and was going strong when I totaled that GTS. I do keep mine on a charger during colder non-riding months though. Another plus for AGM - you can use traditional trickle chargers/tenders with AGM as well, not the case with Lithium batteries.
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