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redtrummy · 08-01-22, 09:59 PM

Cousin had a new bike and the battery failed within the first 18 months. The warranty replacement failed within a year. The third lasted 6 years + and was still going strong when he sold the bike.
I have had batteries that would happily read over 12.7 volts but when a load was applied to it it was incapable of pulling the skin off a rice pudding.
If you want to check if there is a 'vampire' load connect an ammeter in series at one of the battery terminal. 2 amp fsd should suffice . I dont leave a charger on for more than a couple of days at a time, if it fails it could cause the battery to discharge through that. Unlikely but I did have a smart charger fail on me once.

Reckon it will be a naff battery though.

08-01-22, 09:59 PM	#6
redtrummy Member Join Date: Jan 2019 Location: N W Leicestershire Posts: 248	Re: battery Cousin had a new bike and the battery failed within the first 18 months. The warranty replacement failed within a year. The third lasted 6 years + and was still going strong when he sold the bike. I have had batteries that would happily read over 12.7 volts but when a load was applied to it it was incapable of pulling the skin off a rice pudding. If you want to check if there is a 'vampire' load connect an ammeter in series at one of the battery terminal. 2 amp fsd should suffice . I dont leave a charger on for more than a couple of days at a time, if it fails it could cause the battery to discharge through that. Unlikely but I did have a smart charger fail on me once. Reckon it will be a naff battery though.